Home extension in Zaandam
More ground-floor living space, built by a team that understands both the housing stock and permit environment in Zaandam.
Building in Zaandam
What makes Zaandam different
Zaandam has a long timber-building tradition. Modern timber framing is ideal for roof extensions: light on the existing foundation, quick to make weatherproof and easy to insulate. Many flat-roofed homes in Rosmolenwijk and Poelenburg are suitable for an extra floor.
Active in, among others: Rosmolenwijk, Poelenburg, Westerwatering, Oud Koog, Zaandam-Zuid.
Permits
Permits in Zaandam
Zaanstad is positive about adding floors but checks the streetscape and shadow impact on neighbours. We include a shadow study and structural calculations to prevent avoidable delays, and always pay extra attention to foundation conditions in the soft Zaan soil.
Nearby
Projects in and around Zaandam
Costs
Cost estimate
The same transparent ranges apply across our service area; local soil conditions in Zaandam are included in the fixed price.
| Specification | Estimate (per m²) |
|---|---|
| Shell extension (foundation, structure, roof) | €2,000 – €2,500 per m² |
| Fully finished (plaster, floor, electrics) | €2,500 – €3,000 per m² |
| Turnkey incl. kitchen/plumbing connections | €3,000 – €3,500 per m² |
Estimate including 21% VAT, 2026 price level. Piles, large spans and custom glazing affect the price; after the survey you receive one fixed price.
Also active in Amsterdam · Amstelveen · Haarlem — and everything within 15 km. Also for roof extension and dormer.
Planning an extension in Zaandam?
Book a free consultation. We will review the options, the permit situation and an initial cost estimate — with no obligation and a reply within one working day.
contact@renovaco.nlKvK 92576907