My roof is about 35 m² and the membrane is cracking in places. It's not leaking yet, but I want to act before winter. I'm worried about hidden costs. Do I need permits? And should I get multiple quotes, or is the price pretty standard across contractors?
A full flat roof membrane replacement on a 35 m² 1980s roof typically costs €3,500–€6,500 in 2026, depending on: current membrane type (bitumen vs. EPDM), roof condition underneath, accessibility, and local labor rates. Groningen is mid-range for the Netherlands. You do NOT need a gemeentevergunning for like-for-like replacement under the Besluit kleine herstellingen. However, if you're upgrading insulation or changing the system significantly, check with your gemeente first. Always get 3+ quotes — prices vary based on how contractors assess substrate prep work. Post your job on AstraNL to compare verified local roofers' quotes and see exactly what's included before committing.
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