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Knowledge Hub - Cost engine

SIP Garden Room Cost Engine

A calm, realistic way to estimate what a proper SIP garden room is likely to cost - with clear assumptions and a breakdown you can send to me or compare against other quotes.

This is a guide, not a final quote. It's based on typical Helps & Co specifications in Surrey & Hampshire. Site conditions, access and extras will always affect the final number.

1. Tell me roughly what you're thinking

Keep it simple - this doesn't need to be perfect. It's just to get into the right ballpark.

Left-to-right when looking at the front elevation.
Front to back into the garden.
This mainly affects finishes, glazing and time spent on detailing - not cutting corners on structure.
This doesn't include running services from the house - that's always priced on a site visit.
2. Guide build cost (supply & install)
Approx. -
Based on - and a - SIP specification.

This is a guide only. Groundworks, access, service runs from the house, complex glazing, plumbing and bespoke joinery are always confirmed after a site visit. I'd rather be accurate than guess.