A small family building company — est. 1987

Built by our family.Kept by yours.

Extensions, roofs, driveways, garden rooms — nearly anything a house needs, done properly by people you can actually phone.

A completed rear kitchen extension on a Victorian terrace, built by Hartwell & Sons

Est. 1987

family owned & run

What we do

Pretty much anything in construction — if it is part of your house or garden, we have probably built it before.

  1. no. 01Kitchen extensionsRear and side-return extensions, steels, skylights and the knock-through — managed from footing to final coat.
  2. no. 02Roof repairsSlipped slates, tired felt, lead flashing and chimney repointing, fixed before the weather finds them.
  3. no. 03Gutter repairsSagging runs, leaking joints and blocked downpipes re-hung, re-sealed and set to the right fall.
  4. no. 04House decorationInterior and exterior decorating — proper preparation, clean lines and finishes that last.
  5. no. 05Fence buildingClose-board, panel and picket fencing set in concrete posts, straight and built to stand winters.
  6. no. 06Garden housesSturdy timber garden rooms and workshops, built on proper bases with felted or tiled roofs.
  7. no. 07Summer housesA quiet room at the end of the garden — glazed, insulated and finished inside and out.
  8. no. 08OrangeriesBrick-pier orangeries with lantern roofs that feel like part of the house, not an add-on.
  9. no. 09ConservatoriesLight-filled conservatories, new builds and refurbishments, warm in winter and cool in July.
  10. no. 10DrivewaysBlock paving, gravel and tarmac drives with proper sub-bases, edging and drainage.

Something else in mind? Ring us — if we cannot do it, we will tell you straight.

Before / After

Drag the line across each photo. Every pair is a real job, uploaded by us from the site.

Kitchen extension, after the work
Kitchen extension, before the work
BeforeAfter
Kitchen extensionChiswick — Six weeks: rear wall out, steels in, skylight over the new run of units.
Roof & gutter renewal, after the work
Roof & gutter renewal, before the work
BeforeAfter
Roof & gutter renewalEaling — Sagging gutters re-hung to fall, slipped tiles stripped and relaid.

Work we stand behind

Rear kitchen extension in Chiswick

Chiswick · 2025

Rear kitchen extension

A dark galley kitchen opened into a six-metre rear extension — steels in, skylight over, shaker units and stone worktops.

Slate roof renewal in Ealing

Ealing · 2024

Slate roof renewal

Eighty years of patch repairs stripped back — new battens, breathable felt and every slate relaid by hand.

Timber summer house in Richmond

Richmond · 2024

Timber summer house

A fully insulated summer house on a concrete base, wired and finished — a garden room used twelve months a year.

Block-paved driveway in Barnes

Barnes · 2023

Block-paved driveway

Old cracked concrete lifted, a proper sub-base compacted, and crisp block paving laid with new edging and drainage.

The family

Since1987.

Thirty-eight years of extensions, roofs and garden rooms — most of them within a few miles of home.

You speak to the builder

No sales team, no call centre. The person who prices your job is the person who turns up to build it.

One team, start to finish

We do not pass your job down a chain of subcontractors. The same small crew starts it and sees it through.

Tidy sites, honest quotes

A written price before we start, a swept floor before we leave, and no surprises in between.

Two generations on the tools

Martin started the firm in 1987; Dave grew up on its sites. Most of our work still comes from neighbours telling neighbours.

The fastest way to reach us is the phone — not a form, not an email.

020 7946 0018

Monday to Saturday, 8am–6pm — ask for Martin or Dave. If we are on a roof, leave a message and we ring back the same day.