Demo prototype|Hartwell Building & Renovation is a sample business, built to show what Ownistry delivers. A demo like this is for trying only — the real build you commission is yours. Back to Ownistry

Hartwell

Building & Renovation

Extensions and renovations across Bucks and Herts

A small family team, on site every day, with one point of contact from first survey to final snag. Free site visit and a fixed written quote within five days.

Chesham · Amersham · Berkhamsted

Two storey brick extension under construction
✓Public liability insured to £5m
✓10 year workmanship guarantee
✓Fixed written quotes, no day rates
✓Weekly photo updates by text

What we do

Extensions

Single and double storey, from drawings to decorating.

Loft conversions

Bedrooms, offices and en-suites in unused roof space.

Kitchens & bathrooms

Full strip-out, first fix, tiling and finishing.

Full renovations

Period property refurbishment, damp and structural work.

Groundworks

Foundations, drainage, patios and driveways.

Repairs & maintenance

Brickwork, roofing repairs and general building.

What customers say

“They turned up when they said they would, every single day. Rare.”

Sarah H, Chesham

“The quote was the price. No surprise extras at the end.”

Daniel P, Amersham

“Weekly photos meant I always knew what was happening.”

Ruth K, Berkhamsted
See recent projects

Request a quote

Tell us roughly what you have in mind. We’ll call you back the same working day.

You can send photos or drawings after we get in touch — no need to upload anything now.

Sample site. Details, prices and reviews are illustrative. Built by Ownistry Ltd.