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Collective self-build housing · Netherlands

Build your home
together.

The platform for collectief particulier opdrachtgeverschap in the Netherlands. Form a group, match with a site, find your advisors — and act as your own client from foundation to front door.

Start a Community See How It Works
You are the developer No speculative builder involved — your group owns the entire process and commissions directly
Netherlands only Built around Dutch CPO law, Omgevingsplan, Wkb and gemeente tender processes
Free to register No platform fee during the formation phase — join and browse communities in your region
"We started with twelve households who all wanted to build together. Eighteen months later, seven had left — not because we stopped wanting to, but because we had no system for making decisions and no way to find the right land. The group just ran out of energy."
— Aspiring resident, Amsterdam Noord

Good groups dissolve before they build

Collectief particulier opdrachtgeverschap — CPO — is one of the most affordable routes to quality housing in the Netherlands. Homes built by the households who will live in them typically cost 15–25% less than equivalent developer-built properties. Municipalities from Amsterdam to Eindhoven are reserving land specifically for CPO groups.

And yet most groups never build. Not because the ambition fails, but because the coordination tools don't exist. Groups run on WhatsApp threads, chase land leads through personal networks, and cold-message advisors on LinkedIn. CrowdBuilding provides the structure — matching, shared workspace, advisor connections — that keeps groups moving from idea to omgevingsvergunning and beyond.

Who we serve

Three roles. One platform built around all of them.

A CPO project needs households, a site, and professional expertise. CrowdBuilding connects all three.

Residents

Join an existing CPO initiative or start your own. Register your household, describe your programme, and match with others in your region who share your spatial and social ambitions.

For Residents

Site Owners

Municipalities running CPO-reserved tenders and private landowners can list their site and be matched with vetted groups whose programme fits the plot. No speculative interest — only groups ready to build.

For Site Owners

Advisors

CPO process advisors, architects, notaries and hypotheekadviseurs join the network and get matched to initiatives at the phase where their expertise is actually needed — not before.

For Advisors

The journey

From first idea to front door

Four phases. Each one needs different tools and different expertise.

01

Form or join a group

Register your household and describe your programme — size, location, sustainability ambitions, shared spaces. The platform matches you with households in your region who are looking for the same.

02

Match with a site

Browse plots from municipalities offering CPO-reserved tenders and private landowners. Apply as a verified group with a completed charter — not as anonymous individuals.

03

Connect with advisors

Your group is matched to a CPO process advisor, architect, and notary based on location, phase and expertise. No cold outreach — introductions happen when you actually need them.

04

Build as your own client

With your shared programme defined, your omgevingsvergunning in hand, and your Wkb kwaliteitsborger appointed, your group builds. CrowdBuilding handles the coordination layer so you can focus on the homes.

See the full process

Live on the platform

Active initiatives on CrowdBuilding

Forming groups — households coordinating around a shared programme. Not completed builds. Not hypothetical.

Forming

De Groenplaats

Utrecht region 8–12 households

A group of Utrecht households forming around a shared programme: compact mixed-tenure, shared garden, car-light street. Group charter drafted. Currently in site-search phase via Gemeente Utrecht's CPO allocation process.

Site Secured

Hofje Midden

Haarlem 14 households

Gemeente Haarlem plot secured via CPO tender. The group has completed shared programme design and is now selecting a CPO-experienced architect for the omgevingsvergunning submission.

See all communities

What participants say

Voices from the community

"We had been trying to organise fifteen households over a WhatsApp group for eight months. Every decision reopened a debate. Once we moved to CrowdBuilding and filled in the shared programme template, we realised we actually agreed on 80% of it — we just hadn't structured the conversation. We found our CPO advisor within three weeks of joining."

Merel V.
Resident participant, Rotterdam-Zuid

"I advise CPO groups across Noord-Holland and the biggest time drain used to be finding groups at the right stage — after the charter was done, before the architect brief. CrowdBuilding matches me exactly there. The groups arriving in my practice now come with a programme document and a clear timeline. That changes everything about how the first meeting goes."

Jeroen K.
CPO process advisor, Noord-Holland

I want to build my home

Register your household, describe your programme, and connect with groups forming in your region. Free to join during the formation phase.

Join CrowdBuilding

I have land to offer

Municipalities running CPO-reserved tenders and private landowners can submit a site and receive a shortlist of vetted groups whose programme fits the plot.

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