"It's like Airbnb, but for..." is the most common app idea I hear from business owners, and the most underestimated. A marketplace sounds like one app. It is at least two apps sharing a database, with money moving between strangers in the middle.
Key Takeaways
- Marketplaces are among the most expensive shapes for a small app, because two kinds of users need different screens and permissions.
- Paying the second side (payouts) is the hardest part, and payment platforms charge for it.
- The usual marketplace problem is too few users on one side, so launch small and prove both sides show up.
- A first version often handles payments outside the app until volume justifies building them.
Why Marketplaces Cost More
Count what a simple "connect buyers and providers" idea needs:
- Two sign-up flows, two profiles, two dashboards.
- Search and listings.
- Messaging or booking between the sides.
- Payments in, a platform fee, and payouts out.
- Reviews and a way to handle disputes.
- An admin view for you.
Each item is ordinary. Together, they are why our free honest read treats "a directory or marketplace with two sides" as its own category, and why its first question for this kind of idea is: "How does the second side get paid, and who takes the fee? That one decision shapes most of the build."
Cost Ranges
| Version | What it includes | Typical cost |
|---|---|---|
| Directory, no payments | Listings, search, contact form | $3,000 to $12,000, one developer |
| Booking marketplace, payments outside the app | Two logins, bookings, admin | $15,000 to $45,000, small team |
| Full marketplace with payouts | Everything above plus split payments, payouts, reviews | Often above $45,000 |
The first two rows use the same bands as the honest read. The third row sits above what our small-team band covers, and a US agency quote for it is commonly far higher. Our factory cost calculator shows typical US agency ranges by project type for comparison.
The Fees That Come With It
Payment platforms built for marketplaces charge for the extra work of paying the second side. Stripe's standard US card pricing is 2.9% plus 30 cents per successful charge. For platforms, Stripe Connect adds costs when the platform handles pricing itself, including $2 per monthly active account and 0.25% plus 25 cents per payout. Check the current page for your setup, because the fee structure depends on how you configure it.
Those fees shape your business model. If your platform fee is 10% and payment costs take a meaningful share of each transaction, your margin is smaller than it looks on a napkin.
How To Launch on a Smaller Budget
- Start as a directory. Let the two sides find each other and pay each other directly. Prove demand first.
- Handle one side by hand. Recruit providers yourself and add them manually instead of building a provider sign-up flow.
- Invoice outside the app for the first months.
- Pick one city or one niche. A marketplace needs density. Twenty providers in one town beats 200 spread across a country.
Our guide on what to leave out of the first version of your app covers the general approach.
A Concrete Version
An owner wants a marketplace connecting homeowners with vetted handymen in one metro area, taking 12% of each job.
Full version: homeowner and handyman accounts, job posting, quotes, booking, in-app payment with the 12% fee, payouts, reviews, and an admin panel. That is above the small-team band.
Launch version: a directory of 25 handymen the owner recruited personally, each with a profile, reviews the owner collected from past customers, and a request form. The handyman invoices the homeowner directly, and the owner invoices each handyman monthly for the 12%. That fits the one-developer band.
After four months, the owner knows which job types sell, how often homeowners return, and whether handymen pay the monthly invoice without chasing. Only then do payments move into the app, as a second phase with real numbers behind it.
The Honest Counterpoint
Handling payments outside the app has costs. Chasing fees from providers takes time, some will not pay, and providers may take repeat customers off the platform once they have met them. For some marketplaces, holding the payment is the whole value, because it protects both sides. If trust between strangers is the core problem you solve, in-app payments may need to be in version one. Decide based on what your users actually fear.
Frequently Asked Questions
Can I build a marketplace with an AI builder?
A directory version, often yes. Two logins plus payments is where these tools tend to struggle. See can AI build my app without a developer.
Should I use a marketplace software platform instead?
If your model is standard, a ready-made platform can be cheaper. Custom makes sense when your matching, pricing, or trust rules are what makes you different. Read custom software vs off-the-shelf for small business.
How long does a marketplace take to build?
A directory can take a few weeks. A full two-sided app with payments usually takes months. See how long does it take to build an MVP.
Are there legal issues with paying providers?
Often, depending on your industry and state, including tax reporting and licensing rules for some services. This is general information, not legal advice. Ask an accountant or lawyer before you take a cut of payments.
The Bottom Line
A marketplace is two apps plus money in the middle. Launch as a directory, prove both sides show up, then build payments. To see where your idea lands, describe it in the honest read. When you are ready to build, our software factory quotes a fixed price per milestone. Related: hiring engineers for a marketplace startup.
Roberto Espinoza is CEO of Ruzora, which builds custom software for business owners at a fixed price and places pre-vetted senior LATAM engineers with US teams. Get a free honest read on your idea.
