West London
Builders in Harrow
Metro-land at its most complete — and some of the best extension candidates in London.
Local contractor
Building, renovating and extending in Harrow
Harrow is the heart of Metro-land, developed rapidly between the wars along the Metropolitan line. The result is street after street of well-built semi-detached and detached houses with hipped roofs, bay windows, side access and long rear gardens.
For a builder, this is close to ideal stock. The structural arrangements are familiar, the roofs convert predictably, and permitted development usually applies. Pinner, Stanmore and Harrow on the Hill add older and grander property under tighter control.
The housing stock in Harrow
1920s and 1930s semi-detached and detached suburban housing dominates across Rayners Lane, North Harrow, Kenton, Belmont and much of Harrow. Older village and Georgian stock at Pinner and Harrow on the Hill, and larger detached property around Stanmore and Hatch End. Post-war housing and newer apartment development around Wealdstone and Harrow town centre.
Conservation areas and consistent design guidance
Conservation areas include Harrow on the Hill, Pinner Village, Hatch End, Stanmore Hill and several of the better-preserved interwar estates, where permitted development may be restricted. Harrow Council applies fairly consistent residential design guidance on extension depth, roof form, side space to the boundary and materials, which makes outcomes here more predictable than in many boroughs provided the design respects it from the start.
Planning note. Designations change, and two neighbouring streets can sit under entirely different rules. We confirm the conservation area status, any Article 4 direction and the relevant local policy for your specific address at survey stage — before any design work is paid for.
Areas we cover in Harrow
Services
What we do in Harrow
Every service below is delivered by our own teams in Harrow — these four are the ones we are asked for most often here.
Loft Conversions
A whole extra floor without losing a square metre of garden.
House Extensions
Rear, side return, wrap-around and double-storey extensions.
General Building
Brickwork, roofing, groundworks and the repairs that hold a house together.
Kitchen Renovations
The room the whole ground floor is planned around.
On the map
Harrow and the surrounding area
Our office is in Enfield, N18 — marked in white. Harrow and the neighbouring boroughs we cover are shown in teal.
Client feedback
What clients say about working with us
Verified reviews from homeowners, landlords and commercial clients across London.
“A nice man who is a good worker and friendly, cheerful and helpful.”
“Very helpful and always fulfils his commitments. He has worked for us for four years in both a restaurant and a Pilates studio — excellent workmanship and works well with other traders.”
“A very thorough man who gave us excellent value for money and was considerate, conscientious and respectful. No complaints whatsoever and happy to recommend.”
“A really nice guy who was very helpful — nothing was too much trouble.”
Local FAQs
Building in Harrow — common questions
It is the single most common project we do in the borough. The 1930s hipped roofs here convert well, and combined with a rear dormer typically yield a double bedroom plus an en-suite. Outside conservation areas it usually falls within permitted development volume limits.
Often. Side extensions on this stock are restricted to half the width of the original house under permitted development, and councils including Harrow generally expect a set-back from the front elevation and a subordinate roof. A wrap-around combining side and rear is a common and effective solution.
Yes. Edgware straddles the Harrow and Barnet boundary and we work both sides, along with Stanmore, Hatch End and the north of the borough.
Free quotation
Planning something in
Harrow?
Tell us what you have in mind and we will arrange a free site survey in Harrow, then give you a written, itemised quotation.