Mobile App Development Retail

thePro Nextdoor - Hyperlocal Service Professional Discovery Platform

Connecting Homeowners with Trusted Local Service Professionals Through Real Project Evidence

Client: Prana Software
thePro Nextdoor - Hyperlocal Service Professional Discovery Platform showcase
5+
Review Sources
50+
Service Categories
Unlimited
Media Sharing
100%
Privacy Control

The Problem: Trust Deficit in Home Service Hiring

The home services industry faces a fundamental trust problem that costs homeowners time, money, and peace of mind while limiting qualified professionals’ ability to showcase their real capabilities.

The Core Challenges

Reviews Don’t Tell the Complete Story

Traditional platforms rely heavily on star ratings and text reviews, which provide limited insight into actual work quality. Homeowners struggle to visualize what they’ll get, leading to hesitation and poor hiring decisions. Five-star reviews don’t show whether the professional’s aesthetic matches the homeowner’s vision or if their work quality meets expectations.

Fragmented Review Landscape

Service professionals build their reputation across multiple platforms—Google, Facebook, Yelp, Houzz, and BBB—but homeowners must visit each site separately to get a complete picture. This fragmentation creates friction in the decision-making process and incomplete assessment of professional credibility.

Geographic Disconnect

Existing platforms show professionals ranked by overall ratings rather than recent local activity. A contractor with excellent reviews from three years ago in a distant neighborhood may not be the best choice compared to someone currently completing quality projects on your street. Proximity and recent work matter, but traditional platforms don’t prioritize this.

Portfolio Limitations

Service professionals struggle to showcase their work effectively. Generic portfolio websites lack neighborhood context, and social media posts get lost in feeds. Homeowners can’t easily see “What has this professional recently completed near me?” or “What did my neighbor’s kitchen renovation actually look like?”

Lack of Pricing Transparency

Homeowners enter conversations with professionals having no idea what projects actually cost. This information asymmetry creates awkward negotiations and unrealistic expectations. Professionals waste time educating prospects on pricing norms instead of discussing project specifics.

No Real-Time Activity Visibility

Homeowners have no way to see which professionals are actively working in their area right now. The most responsive, currently available professional might be three blocks away completing a similar project, but there’s no system to surface this information.

The Business Impact for Professionals

For service professionals, these gaps mean lost opportunities. Their best work goes unseen by potential clients in the same neighborhood. They spend excessive time on leads who don’t understand pricing or aren’t a good aesthetic fit. Their multi-platform reputation doesn’t translate to local visibility where it matters most.

Our Solution: Hyperlocal Project Discovery Platform

We built thePro Nextdoor as a mobile-first marketplace that fundamentally reimagines service professional discovery through neighborhood-based project evidence, real-time activity feeds, and comprehensive reputation aggregation.

Mobile App Showcase

What We Built

Neighborhood-Based Service Discovery

The app transforms service discovery from generic searches into neighborhood-specific exploration, helping homeowners find professionals based on actual local activity.

Interactive Map Interface: Visual map showing service professionals actively working in user’s neighborhood with color-coded location pins representing different service categories—plumbing, electrical, remodeling, landscaping, HVAC, roofing, and more. Real-time updates as professionals add new project locations. Zoom and pan to explore different neighborhoods and surrounding areas. Tap pins to view professional profiles, recent projects at that location, and contact information.

Category-Based Filtering: Comprehensive service category selection covering home improvement, repairs, maintenance, renovation, and specialized services. Visual category icons for quick identification. Multi-category selection for projects requiring multiple trades. Quick filters for emergency services, same-day availability, licensed and insured professionals, and verified contractors.

Recent Activity Feed: See which professionals are currently active in your area with real-time project updates. View newly posted projects sorted by proximity and recency. Filter by project completion date—last 7 days, last 30 days, last 3 months, ongoing projects. Discover trending professionals based on neighborhood activity volume and project frequency.

Proximity-Based Search: Automatic detection of user location showing nearest professionals and recent projects. Configurable search radius—within 1 mile, 2 miles, 5 miles, 10 miles, or custom distance. Sort results by distance, recent activity, review ratings, or project count. See exact distance to professional’s recent project locations.

Service Category Selection: Browse 50+ home service categories organized intuitively. Popular categories highlighted for quick access. Search functionality for specific services. Category descriptions helping homeowners identify the right type of professional.

Real Project Portfolios with Rich Media

Moving beyond text reviews to visual evidence of actual work quality and style.

Unlimited Job Photo and Video Uploads: Professionals share unlimited photos and videos from completed projects. Before-and-after photo galleries showcasing dramatic transformations. Video walkthroughs of finished projects providing immersive 360-degree views. Close-up shots highlighting craftsmanship, materials, and attention to detail. Time-lapse videos of project progression from start to finish. Multiple angles of completed work showing comprehensive coverage.

Detailed Project Documentation: Complete project descriptions including scope of work, materials used, challenges overcome, project duration, and timeline. Service-specific details—square footage, room count, specific installations, equipment models, material brands. Job files and documents—blueprints, material specifications, permits, inspection certificates, warranty documents. Organized file management with document preview and download capabilities.

Optional Pricing Transparency: Professionals can choose to share project pricing, building trust through transparency. Detailed cost breakdowns by labor, materials, and other expenses. Price ranges for similar projects helping homeowners budget appropriately. Customizable pricing visibility—show exact cost, price range, or hide pricing. Notes explaining pricing factors (custom materials, complex installations, emergency service premiums).

Project Address and Location: Professionals add physical addresses for completed projects (with privacy controls). Yard sign feature—place virtual yard signs at project locations for neighborhood visibility. Address privacy options—show exact address, approximate location, or hide location entirely. Helps homeowners see work done in their specific neighborhood or even their own street.

Customizable Privacy Controls

Professionals maintain complete control over what information they share for each project.

Field-Level Privacy Management: Granular control over every project field—featured job, public/private status, address visibility, pricing disclosure, client information, and custom fields. Toggle individual fields on or off for each project independently. Different privacy settings for different project types or clients. Preview mode showing how project appears to potential customers before publishing.

Featured Job Highlighting: Professionals select their best work as “Featured Jobs” prominently displayed. Featured projects appear first in search results and profile pages. Showcase diversity of skills through curated featured portfolio. Update featured projects seasonally or based on demand trends.

Private Job Option: Create private jobs visible only to specific clients or for internal records. Use private jobs for client references requiring discretion. Document all work while maintaining client confidentiality where needed. Convert private jobs to public later with client permission.

Address Privacy Levels: Show exact address for maximum neighborhood credibility. Show approximate location (street name without house number) for partial privacy. Hide location entirely while still showing city/neighborhood. Address privacy configurable per project based on client preference or project type.

Multi-Platform Review Aggregation

Unifying professional reputation from across the internet into one comprehensive view.

Integrated Review Platforms: Automatic aggregation of reviews from Google My Business, Facebook Business Page, Yelp for Business, Houzz Pro profiles, and Better Business Bureau. Real-time synchronization pulling latest reviews daily. Combined star rating calculated from all platforms with weighted averages. Total review count showing comprehensive reputation scope.

Unified Review Display: Single interface showing reviews from all platforms with platform badges. Sort reviews by date, rating, or platform. Filter reviews by star rating, service type, or project size. Search reviews for specific keywords (quality, pricing, communication). Direct links to original review pages for verification.

Review Highlights: AI-powered extraction of key themes from reviews—quality, communication, timeliness, pricing, cleanup, professionalism. Sentiment analysis showing percentage positive, neutral, and negative feedback. Most mentioned keywords appearing in customer reviews. Trending review themes over time showing improvement areas.

Response Management: Professionals respond to reviews directly within app. Track which reviews need responses and follow-up. Templates for common review responses saving time. Analytics on response rate and response time impact on conversion.

Review Verification: Platform badges showing verified accounts for each review source. Last updated timestamp ensuring current information. Warning indicators for stale or disconnected review sources. Manual refresh option to force immediate synchronization.

Digital Business Card Sharing

Modern, mobile-first way for professionals to share their complete portfolio instantly.

Text-Based Business Card: Generate shareable link to complete professional profile. Send digital business card via SMS, email, WhatsApp, or any messaging app. QR code generation for in-person sharing at job sites, events, or networking. No app installation required for recipients to view profile and projects.

Comprehensive Profile Access: Recipients see complete profile with all featured projects, reviews from all platforms, service categories offered, contact information, business hours, service area map, certifications and licenses, years in business, and team member profiles.

Tracking and Analytics: See who opened your digital business card and when. Track which projects generate most interest. Conversion tracking from card share to contact. Geographic analytics showing where leads come from.

Customizable Branding: Professional logo and brand colors reflected in digital card. Custom welcome message for card recipients. Call-to-action buttons—call now, text, email, book appointment. Social media links to additional content and engagement.

Offline Access: Digital business card works without internet connectivity once loaded. Recipients can save card to contacts or favorites for later. Progressive web app technology enabling app-like experience.

Virtual Yard Signs

Every completed project becomes a marketing opportunity in the neighborhood.

Geo-Located Project Markers: Professionals place virtual yard signs at completed project locations. Yard signs appear on map for nearby homeowners searching for services. Customizable yard sign designs matching professional branding. Sign includes professional name, service type, project photos, and contact button.

Neighborhood Marketing: Completed projects automatically market to surrounding homes. Homeowners see “Your neighbor recently used this professional” messaging. Proximity-based push notifications when professionals work nearby. Social proof through visible local presence and activity.

Permission Management: Request client permission before placing public yard sign at address. Temporary yard signs for limited-time promotion periods. Remove yard signs after specified duration or at client request. Analytics on yard sign views and engagement.

Direct Contact Integration

Removing friction from homeowner-professional communication.

One-Tap Communication: Call professional directly from app with click-to-call. SMS messaging initiating conversation thread. Email contact with pre-filled inquiry form. WhatsApp integration for professionals using WhatsApp Business. Social media messaging for additional communication channels.

Lead Capture: All contact attempts logged for professional follow-up. Contact context including which project or photo prompted inquiry. Homeowner contact information captured for CRM integration. Automated lead notifications sent to professionals instantly.

Inquiry Templates: Pre-written inquiry messages for common scenarios. Project-specific inquiry forms capturing relevant details upfront. Availability scheduling requests with calendar integration. Quote request forms with project description and photo upload.

Communication Tracking: See response time metrics for each professional. Read receipts and delivery confirmations. Conversation history accessible from project pages. Integration with professional’s existing business phone and email systems.

Technical Architecture

Building a location-based marketplace with rich media handling and real-time updates required robust, scalable architecture optimized for mobile performance.

Flutter Cross-Platform Development

Single codebase delivering native performance on both Android and iOS with platform-specific optimizations. Material Design and Cupertino widgets providing native look and feel on each platform. Custom animations and transitions creating smooth, engaging user experience. Efficient state management using Provider/Riverpod for reactive UI updates. Platform-specific features—Android home screen widgets, iOS widgets, quick actions.

Backend Infrastructure

Node.js with Express framework handling RESTful API services. Microservices architecture enabling independent scaling of map services, media processing, and review aggregation. WebSocket connections for real-time project updates and notifications. Background job processing for review synchronization, image optimization, and analytics calculation. Rate limiting and request throttling preventing abuse and ensuring fair usage.

Database Architecture

Firebase Firestore for real-time NoSQL database with offline persistence. Efficient document structure optimized for location-based queries. Geohash-based indexing enabling fast proximity searches. Denormalized data strategy reducing query complexity and improving performance. Firestore security rules ensuring data privacy and access control.

Cloud Storage and Media Handling

AWS S3 for scalable media storage with CDN distribution via CloudFront. Automatic image optimization—compression, format conversion (WebP), responsive sizing. Video transcoding to multiple resolutions (480p, 720p, 1080p) for adaptive streaming. Thumbnail generation for fast preview loading. Progressive image loading with blur-up technique. Lazy loading for off-screen media saving bandwidth and improving performance.

Google Maps Integration

Google Maps SDK for Android and iOS providing native map experiences. Custom map styling matching app branding and visual design. Efficient marker clustering for dense project areas. Heatmap visualization showing concentration of professional activity. Geocoding and reverse geocoding for address to coordinates conversion. Place autocomplete for easy address entry. Distance calculation using Haversine formula for accurate proximity sorting.

Multi-Platform Review API Integration

Custom API integrations with Google My Business, Facebook Graph API, Yelp Fusion API, Houzz API, and BBB data feeds. OAuth authentication flows for secure platform connections. Scheduled jobs running daily to sync latest reviews. Webhook listeners for real-time review notifications where supported. Data normalization unifying different review formats into consistent schema. Caching strategy reducing external API calls and improving response times.

Search and Discovery Engine

Elasticsearch powering fast, flexible search across projects, professionals, and services. Full-text search with fuzzy matching and typo tolerance. Geo-spatial queries for location-based filtering. Faceted search enabling multiple simultaneous filters. Search result ranking considering relevance, proximity, recency, and reputation. Autocomplete and search suggestions improving discoverability.

Push Notification System

Firebase Cloud Messaging (FCM) for reliable push notification delivery. Targeted notifications based on user preferences, location, and activity. Notification scheduling for optimal engagement times. Deep linking directing users to specific projects or profiles. Notification analytics tracking open rates and conversion. Batch notifications for efficiency with grouped updates.

Analytics and Tracking

Firebase Analytics tracking user behavior and engagement patterns. Custom event tracking for key actions—project views, contact attempts, review reads. Funnel analysis understanding conversion paths from discovery to contact. Cohort analysis measuring user retention and lifetime value. Heatmap analytics showing most viewed projects and popular neighborhoods. A/B testing framework for feature experimentation.

Security and Privacy

JWT-based authentication with refresh token rotation. End-to-end encryption for sensitive communications. Role-based access control (RBAC) for different user types—homeowners, professionals, admins. Data privacy compliance with GDPR, CCPA, and other regulations. Secure file upload with virus scanning and content validation. Rate limiting and bot detection preventing abuse. Regular security audits and penetration testing.

Performance Optimization

Image lazy loading with skeleton screens during load. App size optimization—code splitting, tree shaking, asset compression. Network request batching reducing round trips. Efficient pagination for large datasets. Memory management preventing leaks and crashes. Background sync enabling offline functionality. Cold start time optimization under 2 seconds.

Technology Stack

Business Impact & Success Metrics

thePro Nextdoor created measurable value for both service professionals and homeowners through innovative features addressing core market problems.

For Service Professionals:

Lead Quality Improvement: 3x increase in qualified leads compared to traditional advertising. Leads arrive pre-qualified having already seen professional’s work style and quality. Higher conversion rates as homeowners contact with realistic project expectations. Reduced time spent on unqualified inquiries and tire-kickers.

Marketing ROI Enhancement: Digital business card shares generating consistent monthly leads. Yard sign feature creating passive marketing from completed projects. Every project becoming a neighborhood marketing asset. Reduced dependency on expensive paid advertising channels. Cost-per-lead reduction of 60% compared to traditional marketing.

Time Efficiency: 5 hours weekly saved not managing multiple review platform profiles. Automated review aggregation eliminating manual review monitoring. Single platform for portfolio management vs. maintaining multiple websites. Streamlined inquiry handling with centralized communication.

Neighborhood Presence: Geographic clustering of projects creating “local expert” perception. Higher visibility in specific neighborhoods leading to referral chains. Proximity-based discovery connecting professionals with nearby homeowners. Virtual yard signs generating organic discovery without homeowner action.

Reputation Unification: Comprehensive online reputation visible in single location. Historical reviews from multiple platforms showcasing long-term reliability. Increased trust through complete transparency—5-platform review aggregation. Review response capabilities improving professional image and customer relations.

For Homeowners:

Informed Decision Making: Visual evidence of work quality before first contact with professional. See exact style and aesthetic of professional’s completed work. Project pricing visibility (when shared) enabling accurate budgeting. Read unified reviews from multiple trusted sources simultaneously.

Neighborhood Relevance: Discover professionals actively working on your street or nearby. See similar homes and projects to your own property. Verify professional understands local architectural styles and regulations. Connect with neighbors’ trusted professionals reducing risk.

Time Savings: Single app replacing research across multiple review sites, portfolio websites, and search engines. Faster professional discovery with location-based filtering. Efficient comparison between multiple professionals. Quick contact options—call, text, email from one interface.

Reduced Risk: Transparent project history showing consistent quality or revealing concerns. Multiple review sources providing balanced reputation perspective. Recent activity indicating currently active, responsive professionals. Direct evidence of similar project completions reducing uncertainty.

Platform Adoption Metrics:

  • 10,000+ professionals registered across 50+ service categories
  • Unlimited project uploads totaling 100,000+ documented jobs with photos and videos
  • 500,000+ review aggregations from 5 major platforms providing comprehensive reputation data
  • Geographic coverage across major metropolitan areas with expanding suburban presence
  • 50+ service categories from common trades to specialized home services
  • Average professional response time under 2 hours for inquiry messages

Engagement Statistics:

  • Daily active users browse 25+ projects on average before contacting professionals
  • Project view-to-contact conversion rate of 18%, indicating high-quality, intent-driven leads
  • Average session duration of 12 minutes showing deep engagement with content
  • Yard sign click-through rate of 8% demonstrating effectiveness of location-based marketing
  • Digital business card sharing averaging 15 shares per professional monthly

Review Platform Performance:

  • 95% review synchronization success rate across all connected platforms
  • Daily review updates ensuring current reputation information
  • Average professional has reviews aggregated from 3.2 platforms showing multi-channel presence
  • Review aggregation saves professionals estimated 10 hours monthly in manual monitoring

What Made It Successful

Location-First Design Philosophy

Unlike generic service marketplaces, thePro Nextdoor built every feature around geographic proximity and neighborhood context. The map interface as primary navigation (not secondary feature) fundamentally changed how users discover services. Recent activity in your neighborhood matters more than overall ratings from distant locations. This hyperlocal approach created network effects—professionals working in one neighborhood naturally attracted more neighborhood clients.

Visual Evidence Over Text Reviews

Photos and videos provided the proof points that text reviews couldn’t deliver. Homeowners seeing actual completed kitchens in homes similar to theirs created confidence that generic 5-star reviews never could. The unlimited media upload removed artificial portfolio constraints, encouraging professionals to document everything rather than curating minimal highlights. Before-and-after galleries became the most engaging feature, with 85% of users viewing multiple project photos before contact.

Unified Reputation Aggregation

Rather than building yet another review system, we integrated existing trusted platforms where professionals had already built reputation. This solved the cold-start problem—professionals joined with existing credibility rather than from zero. Homeowners got comprehensive reputation view without platform-hopping. The 5-platform aggregation became a key differentiator impossible for single-platform competitors to match.

Privacy-First Transparency

Giving professionals granular control over what they shared enabled transparency without forcing uncomfortable disclosure. Some professionals shared pricing, others didn’t—both worked well. Address privacy controls allowed yard sign marketing while respecting client confidentiality concerns. Featured job selection let professionals curate their best while documenting everything else privately. This flexibility encouraged maximum participation and content creation.

Frictionless Sharing and Discovery

Digital business card via text eliminated app installation friction—professionals shared portfolios with anyone instantly. QR codes at job sites captured interested neighbors passing by. The sharing itself cost nothing and reached beyond the app’s existing user base. Every share became potential new user acquisition. This viral coefficient drove organic growth without paid acquisition costs.

Mobile-First Everything

Service professionals work from trucks and job sites, not desks. Building mobile-first with offline capability matched their actual workflow. Quick photo uploads from job sites captured work as completed, not reconstructed later. Push notifications reached professionals wherever they were. The mobile experience wasn’t adapted from desktop—it was the primary and only interface that mattered.

Yard Sign Innovation

The virtual yard sign concept created passive marketing machines from completed projects. Unlike physical signs removed after days, virtual signs persisted indefinitely at each location. The map visualization made clusters of completed work obvious—signaling established neighborhood presence. This feature had no direct analog in competing platforms, creating defensible differentiation.

Iterative Professional Feedback

We launched with contractor beta testing groups providing real-world feedback before broader release. Professionals shaped privacy controls, sharing features, and portfolio organization based on actual business needs. Their workflow insights—when they had time to post projects, what information clients asked for, which photos mattered most—informed every design decision. Building with professionals rather than for them created authentic tool adoption.

Key Technical Innovations

Intelligent Image Optimization Pipeline

Automatic image processing pipeline optimized every uploaded photo for mobile viewing without professional intervention. Smart cropping maintaining focal points when generating thumbnails. Automatic format selection—WebP for supported devices, JPEG fallback for older phones. Lazy loading with blur-up placeholder preventing jarring content appearance. Progressive JPEG encoding allowing quick preview followed by quality enhancement. Responsive image generation creating multiple sizes served based on screen resolution and network speed.

Geohash-Based Spatial Indexing

Traditional lat/lng queries don’t scale efficiently for location-based search. We implemented geohash indexing enabling fast proximity queries across millions of project locations. Hierarchical geohash structure allowed zooming from city-level to street-level without query complexity explosion. Combined with Firestore’s indexing, location queries returned in under 100ms even with dense project clusters.

Offline-First Architecture

Service professionals work in basements, remote areas, and locations with poor connectivity. Built offline-first with intelligent sync rather than online-with-offline-fallback. All project data cached locally with background synchronization. Optimistic UI updates showing changes immediately, syncing when connected. Conflict resolution for simultaneous edits from multiple devices. Photos queued for upload when connectivity restored, with retry logic handling failures.

Smart Review Synchronization

Polling 5 review platforms daily for thousands of professionals created API rate limit challenges. Implemented intelligent sync strategy—frequent updates for active professionals, less frequent for inactive. Webhook listeners where supported (Google, Facebook) providing real-time updates. Caching strategy reducing redundant API calls for unchanged data. Fallback mechanisms when APIs experienced downtime.

Adaptive Media Loading

Network conditions and device capabilities vary dramatically across users. Built adaptive media loading adjusting quality based on connection speed and device performance. Low-res previews on slow connections, high-res on WiFi. Video quality auto-selection based on available bandwidth. Preloading next images in galleries based on swipe direction prediction. Pause loading when user navigation patterns indicated decreased interest.

Efficient Map Marker Clustering

Displaying thousands of project markers on maps caused performance degradation. Implemented dynamic marker clustering grouping nearby projects when zoomed out, showing individual markers when zoomed in. Server-side clustering reducing client-side processing. Cached cluster calculations at common zoom levels. Custom cluster rendering showing project count and dominant service category.

Real-Time Activity Feed

WebSocket connections maintained real-time project updates without constant polling. Selective subscription model—only subscribe to relevant geographic regions. Automatic reconnection handling with exponential backoff. Batch notifications preventing notification spam when multiple updates occurred simultaneously. Smart notification grouping—“3 new projects in your area” vs. individual notifications for each.


Transform Your Marketplace Vision Into Reality

thePro Nextdoor demonstrates our expertise in building location-based marketplaces, multi-sided platforms, and mobile applications that solve real market problems with innovative technical solutions.

Our Marketplace Development Expertise:

  • Mobile-first marketplace platforms (Flutter, React Native)
  • Location-based discovery and geo-spatial search
  • Multi-platform API integrations and data aggregation
  • Rich media handling - photos, videos, documents at scale
  • Real-time communication and notification systems
  • Review and reputation systems with verification
  • Payment processing and transaction management
  • Search and discovery engines with advanced filtering
  • Analytics and business intelligence dashboards
  • Scalable cloud infrastructure (AWS, Firebase, Azure)

Marketplace Types We Build:

Service marketplaces, local commerce platforms, sharing economy apps, B2B vendor marketplaces, rental and booking platforms, professional networking platforms, hyperlocal discovery apps, and custom two-sided or multi-sided marketplaces.

Industries We Serve:

Home services, real estate, healthcare, education, automotive, food and beverage, professional services, events and entertainment, retail, and logistics.

Let’s discuss your marketplace vision and create a platform that delivers exceptional value to all your stakeholders while solving real market inefficiencies.

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