E-commerce · Marketplaces
Marketplace development company for two-sided platforms that have to earn trust
We design and build service, product and booking marketplaces: the buyer and seller experiences, search and matching, messaging, payments and payouts, verification and the admin tools that keep both sides honest.
Short answer
A marketplace connects two groups, such as clients and vendors, and earns from the transactions between them. Building one means two user experiences, search and matching, messaging, payments with payouts, and trust and safety tools. Innovation Insight has shipped service, care and guide marketplaces now in production. A marketplace MVP costs $15k to $45k over 8 to 14 weeks, and a full platform $50k to $150k+.
Reviewed by Zain Khalid Malik, CTO & Co-founder · Updated
What makes a marketplace different
A marketplace is two products that share a database. Buyers and sellers have different goals, different screens and different reasons to leave. The platform has to bring both sides in at the same time, help them find each other, let them agree and pay safely, and step in when something goes wrong. Each of those is a feature area, which is why marketplaces cost more than a single-sided app of similar size and why the first version has to be chosen carefully.
Types of marketplace we build
| Type | How it works | Example from our work |
|---|---|---|
| Service request and bidding | Clients post a request; verified vendors are notified and submit proposals | Seek My Service |
| Directory with search and booking | Buyers search providers by location and availability, message and book | CareFlair |
| Experts inside a community app | Professionals offer paid services to an existing audience | LogFish guide marketplace |
| Digital goods and licensing | Creators upload work; buyers subscribe or purchase | Cuts Like A Knife |
| Product marketplace | Many sellers, one catalogue, split orders and payouts | Built on the same foundations |
The building blocks
| Block | What it covers |
|---|---|
| Onboarding for both sides | Separate sign-up flows, profiles, verification of sellers or providers |
| Listings or requests | Structured data with categories, pricing, availability, photos and location |
| Search and matching | Text, filters, geographic search, ranking, and notifications to the right sellers |
| Messaging | Real-time chat with read receipts, plus email and SMS notifications |
| Booking or ordering | Calendars, proposals, quotes, order states and cancellations |
| Payments and payouts | Card payments, platform fees or credits, seller payouts, refunds and disputes |
| Reviews and trust | Ratings with moderation, reporting, identity or licence checks |
| Admin console | User management, moderation queues, dispute handling, analytics and content |
Choosing how the platform earns
| Model | How it works | Watch for |
|---|---|---|
| Commission | A percentage of each transaction, collected at payment | Users arranging payment off the platform |
| Lead fee or credits | Sellers pay to respond to a request | Sellers need enough quality leads to keep buying |
| Subscription | Sellers or buyers pay monthly for access | Harder to start before the other side is active |
| Listing or featured fees | Pay to post or to rank higher | Works once there is real traffic |
Seek My Service uses credits: vendors subscribe to service areas priced by population, buy credits through Stripe and spend them to submit proposals. CareFlair was designed so participants and support workers deal directly, without agency commissions. The model shapes the payment design, so we settle it in discovery.
Marketplaces we have shipped
- Seek My Service: a two-sided service marketplace with a NestJS API of more than 80 endpoints, a 28-route React admin dashboard and a Next.js public site with real-time vendor availability by zip code. It has five roles with route-level permission guards, Stripe credit purchases, and notifications through Twilio SMS, SendGrid email and in-app messages.
- CareFlair: a marketplace connecting Australian NDIS participants with independent support workers. We handled research, UI/UX design and development: geospatial search on MongoDB 2dsphere indexes, Socket.io messaging, a job board, bookings with recurring appointments, four user roles, worker screening verification and an admin panel, designed to WCAG guidelines.
- LogFish: a fishing community app with a guide marketplace, Stripe payments, subscriptions and payouts, and earnings dashboards for professionals.
- Cuts Like A Knife: a music licensing platform where creators upload tracks and subscribers buy licences, with permission-based plans on Stripe.
What to build first
- The supply side's onboarding and listing or response flow, because buyers will not stay on an empty platform.
- Search or matching good enough to connect a buyer to three relevant sellers.
- Messaging and the booking, proposal or order step.
- Payment for whichever side pays, with the simplest payout arrangement that is legal and safe.
- A basic admin console for verification, moderation and support.
- Reviews, advanced ranking, mobile apps and automation come after the first transactions.
What it costs
| Stage | Scope | Range | Timeline |
|---|---|---|---|
| Discovery and design sprint | Both journeys, revenue model, data model, prototype, estimate | $3k to $8k | 1 to 2 weeks |
| Marketplace MVP | Two roles, listings or requests, search, messaging, payments, basic admin | $15k to $45k | 8 to 14 weeks |
| Full platform | Payouts, reviews, verification, mobile apps, analytics, full admin console | $50k to $150k+ | 4 to 8 months |
| Ongoing product team | Dedicated engineers on your roadmap | From $4,000 per senior engineer per month | Monthly |
Our cost breakdowns for Airbnb-style and Uber-style apps show how individual features add up, and the cost calculator gives a range for your own feature list.
Sources and further reading
Next step
Tell us what you're building and get a written estimate.
A senior engineer replies within one business day. NDA on request.
Products we've shipped, and what happened next.
Case studies written from the technical documentation of each project: the stack, the scale and the outcome.
Questions we get asked a lot.
How long does it take to build a marketplace?
A focused MVP with two roles, search, messaging and payments takes 8 to 14 weeks after discovery. A full platform with payouts, reviews, verification and mobile apps takes four to eight months.
How do marketplace payments and payouts work?
Usually through Stripe Connect: the buyer pays, the platform takes its fee and the seller is paid out after onboarding and identity checks. Credits or subscriptions are alternatives when sellers pay for leads.
Do we need mobile apps at launch?
Often not. A responsive web app proves demand faster. Apps follow when one side, usually providers, needs notifications and on-the-go use.
How do you handle trust and safety?
Verification workflows for sellers, reviews with moderation, reporting tools, role-based access and an admin console for disputes. Requirements such as licence or screening checks are built into onboarding.
Can you take over an existing marketplace?
Yes. We begin with an audit of the code, payments and infrastructure, fix the riskiest issues and then continue feature work.
Web, mobile or both?
We build responsive web with Next.js and React, and iOS and Android apps with Flutter or React Native on the same back end.