We're converting a small 20m² garden studio in Groningen into a guest house. Currently it's powered from our main house via a long extension cord, which obviously isn't safe or legal. We need to know: should we install a separate electricity meter, or can we add a dedicated circuit from our groepenkast? And roughly what budget should we reserve?
You'll need a separate meter for a guest accommodation — it's both a legal requirement (gemeente zoning) and a safety rule under NEN 1010. This isn't a DIY job: only a registered installateur (inbedrijfsteller) can connect a new meter. Cost typically ranges €2,500–€4,500, depending on distance from your main supply, whether you need a new kabel in the ground, and local network operator fees (Enexis, Liander, etc.). If you only want one dedicated circuit without a separate meter, that's cheaper (€400–€800), but won't be legal for a guest space. Contact your gemeente planning office first to confirm zoning; then post the full job on AstraNL — local electricians will give you exact quotes and handle the network operator paperwork.
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