Marketplace development services
A marketplace is three applications sharing one set of records: a buyer storefront, a seller dashboard and an operator back office, with money moving correctly between them. We build all three.
buyerOrder MK-55812
- Espresso grinder, commercial$1,240.00
- Burr set, spare$96.00
- Delivery$35.00
Paid$1,371.00
shippedarrives Fri
Sold by Northgate Coffee Supply · returns open until 14 Nov
sellerNorthgate Coffee Supply
- Items sold$1,336.00
- Shipping collected$35.00
- Commission 12%−$160.32
- Payment fee−$40.06
Your payout$1,170.62
heldreleased 7 days after delivery
Next step: add tracking number
operatorMarketplace back office
- Buyer charged$1,371.00
- Commission earned$160.32
- Held for seller$1,170.62
- Dispute windowopen · 14 days
Seller riskverified · low
rulepayout.release = delivered + 7d, unless disputed
types
Three kinds of marketplace we build
Multi-vendor, B2B and service marketplaces share a structure but differ in how buyers decide and pay. That difference drives most of the design.
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multi-vendor
Multi-vendor marketplace development
Many sellers list products in one catalogue; buyers check out once across several sellers. The hard parts are catalogue quality, split orders and split payments, and seller-specific shipping and returns.
Split carts, per-seller fulfilment, commissions by category.
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b2b
B2B marketplace development
Business buyers purchase from vetted suppliers, often with quotes, negotiated prices, purchase-order approval and payment on terms instead of by card.
Approved buyers, RFQs, net terms, buyer-side approval chains.
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services
Service marketplace development
Clients book or hire providers for time or outcomes rather than shipping goods: availability, scope, milestones, and payment released on completion.
Booking or proposals, milestones, escrow-style release, reviews.
three sides
Three sides, three applications
Each side has its own users, permissions and screens, but they all work on the same orders, listings and payments.
| Compared on | buyers | sellers | operator |
|---|---|---|---|
| Core jobs | Find, compare, buy, track, return | List, price, fulfil, get paid | Approve, moderate, resolve, report |
| Key screens | Search, listing, checkout, orders, messages | Catalogue, orders, payouts, performance | Sellers, listings queue, orders, disputes, payouts |
| Rules they live by | Return windows, buyer protection | Listing policies, fees, service levels | Commission tables, release rules, trust thresholds |
| Data they must not see | Seller margins and fees | Other sellers’ data; buyer details beyond the order | - (audited access to all) |
payments
How money moves through a marketplace
The buyer pays once; the platform keeps its commission; the seller is paid later, when the release rule is met. Getting the order of these steps right, and making the exception path fair, is what buyers and sellers trust you for.
- Buyer pays (completed) card charged · split recorded
- Funds held (completed) platform account
- Delivered (current state) tracking confirms
- Released (not reached) after 7 days, no dispute
- Paid out (not reached) to seller’s bank
exception path
disputed Buyer opens a dispute before release → payout frozen → evidence from both sides → refund (full or partial) or release, decided by your trust team under published rules.
supply side
Seller onboarding and trust
Sellers move through states before they can sell, and can be moved back if they break the rules. Identity and bank checks are usually done by the payment provider; your rules decide the rest.
- Applied (completed) business details, category
- Verifying (completed) identity and bank via payment provider
- Approved (completed) can create listings, not yet visible
- Live (current state) listings visible after moderation
- Suspended (exception path) policy breach or risk signal
- Listing moderation: a queue for new and changed listings, with rules for what is checked automatically.
- Reviews and ratings tied to completed orders only.
- Performance thresholds: late shipment or cancellation rates that trigger warnings before suspension.
data
Listings, search and catalogue rules
A marketplace is a data-heavy application. The catalogue determines whether buyers can find what they want and whether sellers can list it without help.
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taxonomy
Categories and attributes
A category tree with required attributes per category, so listings can be filtered and compared.
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search
Search and filters
Relevance tuned to your catalogue, faceted filters from attributes, and sorting that sellers can’t game.
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bulk
Bulk listing tools
Spreadsheet or feed imports with validation reports, for sellers with large catalogues.
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quality
Listing quality
Duplicate detection, image and description checks, and prohibited-item rules before a listing goes live.
build or buy
Custom marketplace development or a marketplace platform?
Packaged multi-vendor platforms get standard product marketplaces live quickly. Custom development pays off when your transaction is the product.
| Compared on | packaged marketplace platform | custom marketplace |
|---|---|---|
| Best when | Standard product catalogue, card checkout, simple commissions | B2B terms, services and booking, unusual pricing, or regulated flows |
| Speed to first version | Fast | Slower, focused on one side first |
| Fees | Licence or revenue share, plus extensions | Build and run costs; no platform revenue share |
| Differentiation | Limited to configuration and themes | Transaction, trust and experience designed around your model |
how we work
How we deliver marketplaces
Whichever marketplace development company you choose, remember that marketplaces fail more often from an empty side than from bugs. The delivery order is built around getting both sides to meet.
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Step 1: Define the transaction
What is being exchanged, who sets the price, when money moves and when it is released, and what happens when something goes wrong.
you getA transaction and money-flow specification, with the payment provider chosen.
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Step 2: Build one side really well first
Usually the supply side: seller onboarding and listing tools good enough that sellers bring inventory before buyers arrive.
you getA seller application and an operator back office on staging.
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Step 3: Open the buyer side
Search, listings, checkout and the buyer account, with payments, payouts and disputes tested end to end.
you getA live marketplace with a controlled group of sellers and buyers.
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Step 4: Operate and iterate
Moderation, trust rules, reporting and the improvements real trading data points to.
you getOperating dashboards and a prioritised backlog.
Note on “vendors”: if your vendors supply your company rather than sell to buyers on your platform, you need a supplier and vendor portal, not a marketplace. If you sell software subscriptions to businesses, see SaaS development services; if the thing being sold is a time slot, see booking system development. For budgets, read the web application cost guide.
faq
Frequently asked questions
What is a multi-vendor marketplace?
A multi-vendor marketplace is a platform where many independent sellers list products or services, buyers purchase from them in one place, and the platform operator handles payments, commissions and rules. Each seller has their own dashboard; the operator has a back office across all of them.
How does a marketplace make money?
Most marketplaces take a commission on each transaction. Others charge sellers subscription or listing fees, charge buyers service fees, or sell promoted placement. The model affects the build, because commissions and fees have to be calculated, shown and settled correctly.
How do you build a B2B marketplace?
Start with how business buyers actually purchase: approved buyer accounts, quotes or negotiated prices, purchase-order approval and payment on terms. Then build supplier onboarding and catalogue tools, the order and payment flow, and the operator back office, and launch with a focused group of suppliers and buyers.
Which platform is best for a multi-vendor marketplace?
Packaged multi-vendor platforms work well for standard product marketplaces. A custom build is better when your transaction, pricing, booking or approval rules are specific, or when the marketplace is the core of your business and you need to own and evolve it.
How much does it cost to build a marketplace?
Cost depends on the type of transaction, the payment model (split payments, escrow-style holds, payouts in several countries), how much each side’s application has to do, and the trust and moderation tools you need at launch. Our cost guide explains how to scope these drivers.
How are seller payouts handled?
Through a payment provider that supports marketplaces: buyer payments are split at checkout, the seller’s share is held until the release rule is met, then paid out to the seller’s verified bank account, with identity checks on sellers as the provider and regulations require.
Should a marketplace launch with both sides at once?
Rarely. Most successful launches make one side valuable first, usually sellers with good tools and some inventory, then open to buyers in a focused category or region where both sides can meet.
project brief
Tell us about your marketplace
What is traded, who the sellers and buyers are, and how you plan to earn from it. We reply with questions about the transaction and payments, then a proposal.
- 01
We read it and reply with the questions that decide scope.
- 02
A working session mapping records, roles, rules and integrations.
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A written proposal with phases, assumptions and what each phase delivers.