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About The Plan Company

Engineers who put their prices online.

Founded in 2018, 500+ projects later, still no salespeople, you talk to the engineers doing the work. Fixed-price drawings, calcs and Building Control submissions for lofts and extensions across London and the South-East.

The story

Started in 2018, for a fairly simple reason.

Sean started The Plan Company after a decade watching architects and engineers in London quote homeowners weeks late and three times more than necessary for routine residential work. A loft conversion isn't a research project. A rear extension isn't bespoke. The deliverables are well-known, the council's requirements are published, there's no reason the price should be a mystery.

So we standardised the deliverable, published the price, and hired engineers who can draw. Three packages, three numbers. The drawings are submittable to Building Control, the calcs are stamped by a chartered engineer, and the whole pack lands in a client portal you can actually use.

We're a small team. No call-centre, no account managers, no "we'll get a quote over to you by end of week". You speak to the person doing your drawings.

What we believe

Three things we don't budge on.

Prices belong on the website

If we can quote you on a call, we can quote you on a page. Three packages, three numbers, no "we'll get back to you with a figure".

Drawings should be submittable, not just pretty

Every pack we send is what Building Control accepts. You shouldn't need a separate consultant to translate our work for the council.

If we can't help, we tell you fast

Wrong postcode, wrong scope, wrong fit, you hear within the hour, not after three phone calls. Your time matters more than our pipeline.
500+Residential projects since 2018
14 daysStandard turnaround from brief to submission pack
£1,650Fixed starting price, inc VAT, listed on every page

Want to see what it costs?

The three packages are listed in full, what's included, what isn't, and the fixed price. Or drop your postcode in for an instant yes/no on coverage.