Grosvenor
Builders
01707 644529

Brookmans Park · Hertfordshire & North London

Doneproperly.

Fred, Dan and James — a family firm, thirty years in. The people who price your job are the people who turn up to do it. Nothing subcontracted out.

Hero photograph
Finished kitchen or extension, shot wide, daylight.
Portrait crop · min 1600×2000px

Now booking
Spring 2027
5.0/5
Which? Trusted
Trader rating
100
Verified
customer reviews
99%
Would recommend
us to a friend
30+ yrs
Family run,
same trade
Herts Trading
Standards Approved
DBS checked ·
Publicly liability insured

What we do

One team, start to finish.

No subcontracted patchwork. Brickwork, plumbing, electrics, plastering, tiling, carpentry and decorating are all done in-house — not handed to whoever was free that week.

01 — Most requested

Bathrooms & wet rooms

  • Full refurbishment
  • Wet rooms and level-access showers
  • Accessible bathrooms
  • Cloakrooms and en-suites
  • Design and supply
02

Kitchens

  • Full installation
  • Design, or fitting your supplier's
  • Granite and stone worktops
  • Structural openings and steels
  • Utility rooms
03

Extensions & conversions

  • Single and two-storey extensions
  • Loft conversions
  • Garage conversions
  • Bespoke carpentry and joinery
  • Plastering and structural repairs

Recent work

The job book.

Every job, where it was and what it involved. Many of these customers will happily show you the finished room and talk you through how it went.

EN6
Potters Bar
Completed 2026

Rear extension and kitchen

Foundations through to flooring and decoration, with a temporary kitchen fitted so the family could stay in the house throughout.

ExtensionSteelsKitchen fit14 weeks

Project photo · landscape
Finished room, wide angle

AL9
Brookmans Park
Completed 2026

Two rooms into one bathroom

Removed a dividing wall to make a single family bathroom, with full replumbing, tiling and a rebuilt airing cupboard.

BathroomStructuralTiling5 weeks
N14
Southgate
Completed 2025

Kitchen refurbishment

New electrics, plastering and flooring, then a full replacement kitchen with granite worktops — completed on the original estimate.

KitchenElectricsGranite6 weeks

Project photo · landscape
Finished room, wide angle

Who turns up

Three names, not a rota.

The same people quote the job, do the work and come back for the snagging. You'll know all three by the end of the first week.

Fred

Estimates & project management

Comes out with the clipboard, walks the job, and writes the estimate you'll be held to. Handles Building Control and keeps the schedule honest.

Daniel

Carpentry & joinery · on the tools

Joined the firm in 2005 with an advanced carpentry and joinery qualification. On site every day a job is running.

James

On the tools

Works alongside Daniel across plumbing, tiling, plastering and finishing. The pair are named in review after review.

In their words

Every review verified by Which?

Which? Trusted Traders moderates every review and confirms the person was a genuine customer. We have a hundred of them.

[Testimonial slot — a review about the same team being there start to finish. Roughly 20–30 words.]

Office refurbishment · Greater London · 2025

[Testimonial slot — a review naming Fred, Dan and James and mentioning tidiness or communication. Roughly 20–30 words.]

Bathroom refurbishment · Hertfordshire · 2026

Tell us about the job.

Estimates are free and there's no obligation. Fred will come out, look at the work properly and give you a written price — and an honest answer on when we could start.

Call the office

01707 644529

Or mobile

07956 403235

Request an estimate