One crew, one number to ring.
A small firm on purpose. The people who dig the footings are the people who hang the doors, and the person you meet at the site visit is the person who rings you on a Friday with the week's progress.
Insured, and every job ends with the certificates handed over: gas, electrics, building control, and a written guarantee on the workmanship.

Site visit
We come and look. No quote is worth anything written from photographs.
Fixed quote
Itemised, with the things that could change called out honestly up front.
The build
Same crew throughout, site left safe every evening, weekly progress update.
Sign-off
A walk round together, snags fixed, certificates and guarantees handed over.
Talk to us about the build.
A site visit costs nothing. You get a written quote with a start date and a finish date on it, and the estimate is the invoice.
The written quote follows within two working days of the visit.