The verdict in three sentences
A B2B contractor marketplace connecting clients (VvE property managers, facility managers, housing associations) with verified tradespeople is viable in Amsterdam if the MVP stays focused on three functions: vetting, quotes and payment. Its 2026 cost sits between EUR 35,000 and 70,000 (excl. VAT) for 4 to 6 months of development. The business model relies on a 5 to 10 % commission per job, minus 1.5 to 2.5 % payment fees, which means you need several million euros of annual volume to be profitable.
What the MVP must contain (and nothing more)
The classic mistake of a founder from the trade is to rebuild the whole job in version 1: scheduling, site tracking, invoicing, ratings, messaging, native mobile app. The MVP must prove one thing only: clients post jobs and contractors answer with quotes that get accepted.
| Feature | MVP (V1) | Version 2 (after 6 to 12 months) |
|---|---|---|
| Contractor onboarding | KvK extract, liability insurance, VAT number checked manually | Automated checks via API (KvK, insurers) |
| Job posting | Form per trade, photos, address | Recurring jobs, framework contracts, multi-site |
| Quotes | Online quotes, comparison, acceptance | Price library, template quotes |
| Payment | Card or iDEAL via Stripe Connect or Mangopay, escrow | Deposits, 5 % retention |
| Tracking | Simple statuses, before/after photos | Scheduling, signed completion report |
| Ratings | Review after job | Reliability score, average lead times |
| Mobile | Responsive web | Mobile app once usage is proven |
Document verification (recent Chamber of Commerce extract, valid liability insurance, tax compliance) is the main selling point for property managers: it protects the client in case of damage or undeclared work.
Budget and business model 2026
| Item | 2026 range | Comment |
|---|---|---|
| Scoping, user flows, mockups | EUR 5,000 to 9,000 | 3 to 4 weeks |
| MVP web development | EUR 25,000 to 50,000 | Back office, contractor and client areas |
| Payment and escrow integration | EUR 4,000 to 8,000 | Stripe Connect or Mangopay, contractor KYC |
| QA and launch | EUR 1,000 to 3,000 | Testing, GDPR, terms and conditions |
| Total MVP | EUR 35,000 to 70,000 | 4 to 6 months |
| Hosting and tools | EUR 150 to 400/month | Server, email, document storage |
| Payment fees | 1.5 to 2.5 % per transaction | Varies by card, iDEAL or transfer |
With an average 7 % commission and 2 % payment fees, net margin per transaction is about 5 %. On an average EUR 3,500 job, that is EUR 175. To cover EUR 4,000 of monthly running costs (hosting, maintenance, a half-time person for vetting), you need about 23 jobs per month.
Risks to address in V1
- Disintermediation: after the first job, contractor and client may work directly. The answer: insurance, escrow, history and centralised invoicing that add value a direct deal cannot offer.
- Legal status: collecting funds on behalf of third parties requires a licensed payment institution (Stripe Connect, Mangopay, Lemonway).
- Chicken and egg: start with 40 to 60 contractors recruited by hand in Amsterdam, Amstelveen and Haarlem before opening to clients.
Mini case study
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Daan, a former site manager in Amsterdam, launches his platform with a EUR 52,000 MVP and EUR 3,500 of monthly costs. He signs 6 property management firms that together manage 180 owners' associations.
At 12 months, the platform handles 30 jobs per month at EUR 3,500 on average, EUR 105,000 of monthly volume. The 7 % commission brings EUR 7,350, minus EUR 2,100 of payment fees: EUR 5,250 monthly margin, so EUR 1,750 profit after fixed costs. At 40 jobs per month, margin rises to EUR 7,000 and the MVP pays back in about 15 months of growth.
FAQ
Do we need a mobile app from day one?
No. A responsive website is enough for V1 and saves EUR 15,000 to 30,000. A native app makes sense once more than 60 % of usage is on mobile and push notifications become essential.
How do we vet contractors without spending days on it?
The MVP includes document upload with manual back-office review, about 15 minutes per contractor. Beyond 300 contractors, registry APIs and automatic expiry checks cut that time in half.
What commission should we charge?
Between 5 and 10 % of the job value excluding VAT in 2026. Large jobs above EUR 20,000 are often negotiated at 3 or 4 %, with a monthly subscription for the client.
Who owns the platform?
The founder owns the source code, data and accounts. Require it in the contract, because it determines any future fundraising.
Let's scope your project. Describe your target clients, contractors and commission model: we price an MVP delivered in 4 to 6 months. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
