25 Best Builders in Harrow for 2026

Families across Harrow needing extensions or renovations turn to Z&S Builders LTD for structural work carried out with minimal disruption to daily household routines. The firm has built a strong local reputation, reflected in a 4.9 rating from 170 reviews. Work is organised around client schedules, from initial planning through to finishing details.

Families across Harrow extending or renovating their homes make up much of Fortia Contractors' workload, from loft conversions to full refurbishments. The firm holds a 5-star average from 76 reviews, a reflection of consistent workmanship across projects of varying size. Enquiries can be made through the company's website for households in the HA1 area.

Mez Construction UK Ltd works as a building contractor covering Harrow and the surrounding HA5 area, taking on projects from extensions to full refurbishments. Feedback from 99 reviews averages 4.8, reflecting consistency across a fairly steady stream of domestic work rather than one-off jobs.

A perfect five-star average across 51 reviews sets Supastruct apart among builders operating in Harrow. The firm takes on general building and construction work, from structural jobs to renovations, with consistency reflected in client feedback rather than self-promotion. That volume of reviews suggests a steady, repeat local client base rather than an occasional job here and there.

Renovaze Ltd works as a building contractor covering Harrow, taking on renovations and general construction projects. The firm holds a five-star rating from 45 Google reviews, a track record built through repeat work in the area. Enquiries can be made via its website for those planning building or refurbishment work.

Sullivan Brickwork is a building firm based in Harrow, working on brick and blockwork for extensions, garden walls and repairs. Customers rate the firm 4.8 from 48 reviews, reflecting consistent standards on smaller domestic jobs as well as larger structural projects. The business covers Harrow and surrounding areas.

A typical enquiry starts with a loft conversion, kitchen extension or full refurbishment that needs proper coordination from planning through to finish. Compact Building Ltd, based in Harrow, handles those stages directly rather than subcontracting the thinking, which likely explains the run of 32 five star reviews. Clients tend to return once the first project settles in.

Rated highly by local residents, Hodgson Group Ltd operates as a building contractor serving Harrow and the surrounding area. The company covers the HA2 postcode and nearby neighbourhoods, taking on construction and general building work across the region. Their online presence at hodgsonandsons.com provides further detail on the scope of projects they undertake.

Residential renovation work across older and established housing stock is the focus for Home Renovation Solution, based in Harrow. The company covers structural and internal projects including loft conversions, kitchen and bathroom refurbishments, and central heating installation, alongside external work such as driveways and landscaping. Thirty Google reviews place them at a full five-star rating.

Much of JL Lyons & Co's work in Harrow involves extensions and renovations to older, established houses, where matching existing brickwork and layouts requires care. The firm also takes on loft conversions and refurbishments for family homes in the area. Its 5-star rating from 29 reviews reflects consistent client satisfaction across these projects.

Families across Harrow use Emporium Design Ltd for renovations and building work that need careful sequencing around daily household life. The firm has built a strong local reputation, reflected in a 4.8 rating from 36 reviews. Extensions, refurbishments and structural alterations are handled with an emphasis on tidy, well-organised sites.

Loft conversions and rear extensions make up much of Skyros Design & Build's workload in Harrow, with the firm handling structural work through to final finishes on one contract. Based in the HA5 area, it has built a strong local reputation, reflected in a 4.9 rating from 27 reviews.

Loft conversions and extensions form the core of Double S Builder Ltd's work in Harrow, covering structural alterations through to finishing touches. The firm holds a 5-star rating from 17 reviews, reflecting consistency across projects of varying scale. Enquiries can be made via its website for those planning larger renovation work.

Loft conversions and full house remodels make up much of the workload at Reconst Refurbishment & Remodeling Stanmore, covering structural alterations as well as internal reconfigurations for properties around Harrow. The firm holds a 5 rating from 15 reviews, reflecting consistency across projects that often involve coordinating multiple trades on a single job.

Harrow and the surrounding HA2 area are served by Crystal Core Limited, a building firm handling extensions, renovations and general construction work. Fifteen reviews on Google have left the company with a full five-star rating, reflecting consistent standards across its project history. Further details are available on its website.

Alpha Global Builders operates out of Harrow, taking on general building work from extensions to renovations. Fourteen Google reviews have left the firm with a full five-star rating, a reflection of consistent attention to detail on completed projects. Enquiries can be made through the company website for those planning building work in the area.

Much of Florian Joinery and Construction Ltd's work in Harrow involves extensions and refurbishments to older, period-style houses, where matching existing joinery and structural quirks demands care. The firm also takes on loft conversions and smaller renovation projects, holding a 5-star rating from 14 reviews. Its HA7 base keeps response times manageable for local clients.

General building work in Harrow covers everything from extensions to full refurbishments, handled by Eternal Design and Build Ltd. Fourteen Google reviews have produced a full five-star rating, reflecting consistency across projects rather than a single job done well. The firm operates across HA8 and surrounding areas.

Extensions, loft conversions and general building work make up the core offering at H Carolan Construction, a Harrow-based firm covering residential projects across the area. Thirteen Google reviews have left it with a five-star rating, suggesting consistent workmanship on smaller-scale domestic builds. Enquiries can be directed through the company website.

A perfect 5 from 12 reviews sets London Building Services apart among builders operating in Harrow. The firm takes on general building and renovation projects, working directly with clients from initial planning through to completion. Based in the HA2 area, it serves households across the surrounding neighbourhood.

Families across Harrow use AMP Builder Ltd for extensions, renovations and general building work, with jobs ranging from small repairs to larger structural projects. The firm has built a strong local reputation, reflected in a full five-star rating from twelve reviews. Enquiries can be made through the company website for households in the HA2 6JN area.

General building work across Harrow is the focus of FarzBuildSolutions, covering extensions, renovations and smaller structural jobs for local households. The firm has built up a 4.9 rating from 13 reviews, reflecting consistent standards on completed projects. Enquiries can be made through its website for details on current availability.

Calls to DFS Decorating usually start with a room needing more than a fresh coat of paint, perhaps plastering, minor structural work or a full redecoration after other trades have finished. Based in Harrow, the firm handles these jobs from start to finish, and its 5 rating from 10 reviews suggests clients are satisfied with the standard of finish and tidiness left behind.

Harrow and the surrounding areas are served by Kathmandu Design & Build Limited, a firm covering general building and design projects. Ten reviews on Google have produced a full five-star rating, suggesting consistency across the jobs undertaken. Work is organised from a base within HA2, keeping response times local.

All-In-Renovation works as a building firm covering Harrow, taking on projects from extensions to full property refurbishments. Its 4.9 rating from a dozen reviews points to consistent standards across jobs of varying scale. Clients dealing with structural or cosmetic work alike can approach the firm for a single point of contact throughout.