Building trust, crafting homes
Builders in Harrow & NW London

Crafting exceptional homes across North-West London.

From elegant rear extensions to full home refurbishments, All2Construct Ltd delivers thoughtful design and uncompromising craftsmanship across Harrow and the surrounding boroughs β€” on time, on budget, and built to last.

Available for new projects
A modern London home extension by All2Construct Ltd
FMB
Master Builders
Β£5M
Insurance cover
10yr
Guarantee

Accredited members of

FMB TrustMark Checkatrade NHBC Gas Safe Which? Trusted
About All2Construct

A Harrow-based builder you can actually trust.

All2Construct Ltd serves homeowners across Greater London β€” from elegant Pinner extensions to full Stanmore refurbishments. We're proud members of the Federation of Master Builders, TrustMark accredited, and fully insured up to Β£5 million.

Our approach is simple: meticulous attention to detail, transparent fixed-price quotes, and honest project management that makes building a home a pleasure, not a stress.

Talk to our team β†’
FMB
Federation of Master Builders accredited
10yr
FMB-backed workmanship guarantee
100%
Fixed-price quotes β€” no hidden costs
What we do

From single-room renovations to ground-up builds.

A full-service building contractor offering everything you need under one roof β€” design, planning, construction and project management. No subcontractor chains. No hidden fees. No surprises.

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House Extensions

Single and double-storey rear, side return and wraparound extensions designed to flood your home with light and space.

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Loft Conversions

Dormer, mansard, hip-to-gable and Velux loft conversions that add a beautiful new storey to your home.

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Kitchen Renovations

Bespoke kitchens combining elegant joinery, premium materials and seamless functionality for the way you live.

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Bathroom Renovations

Watertight, beautifully tiled bathrooms with underfloor heating, bespoke vanities and statement fittings.

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Basement Conversions

Add a full extra floor below ground β€” structural engineering, waterproofing and natural lighting designed in-house.

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Full Refurbishments

Strip-out to handover transformations for homeowners and landlords. One contract, one team, one trusted partner.

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New Builds

Bespoke ground-up residential construction β€” from architectural design through planning, build and final fit-out.

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Planning & Permits

In-house planning consultants navigate planning permission, party wall and building control on your behalf.

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Why choose us

Five reasons NW London
homeowners choose us.

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Turn-key delivery

One single point of contact from initial sketch to final handover. No subcontractor chains, no finger-pointing, no chasing different trades. Your project, our complete responsibility.

/ 02

In-house design

Architects working alongside our builders.

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Planning expertise

We handle every council application.

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Fixed-price quotes

Detailed, itemised, no surprises.

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10-year guarantee

Every project backed by FMB Build Assure β€” a decade of insurance-backed peace of mind, even if our company ceases trading.

Founder of All2Construct Ltd
Meet the founder

The team behind every great build.

"A home isn't built from bricks and mortar alone. It's built from the trust between a family and the people they invite to shape their space."

All2Construct Ltd was founded with a clear philosophy β€” that North-West London deserved a builder who treats every home with the same care as if it were their own. That principle still drives everything we do today.

With deep experience in residential construction and a passion for British architectural heritage, our founder personally oversees every major project β€” working closely with clients, architects and our craftspeople to deliver homes that are beautiful, durable and genuinely yours.

A2
The All2Construct team
Founder & director
Selected projects

Recent work across NW London.

A glimpse into the homes we've shaped β€” from elegant Pinner kitchens to ambitious Stanmore whole-house refurbishments. Every project tells a story of collaboration, craft and care.

Harrow Garden Extension
Extension

Harrow Garden Extension

Stanmore Loft Conversion
Loft

Stanmore Loft

Pinner Kitchen
Kitchen

Pinner Kitchen

Edgware Bathroom
Bathroom

Edgware Bathroom

Hendon Refurbishment
Refurbishment

Hendon Refurb

Wembley Basement
Basement

Wembley Basement

Northwood New Build
New Build

Northwood Build

Common questions

Everything you might be wondering.

Got a question that isn't answered here? Give us a call or drop us an email β€” we're always happy to talk through your project, no commitment required.

Ask us anything β†’

Do I need planning permission for an extension?

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Many smaller extensions fall under Permitted Development Rights, meaning no planning permission is required. However, listed buildings, conservation areas and larger projects usually need full planning consent. We assess your property and handle the entire planning process for you, free of charge during quote stage.

How much does a London home extension cost?

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Costs vary depending on size, specification and location, but a typical single-storey rear extension in London ranges from Β£2,500 to Β£3,500 per square metre. We provide detailed itemised fixed-price quotes after a free site visit, so you know exactly what you're paying for.

How long will my project take?

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A standard loft conversion takes 8–12 weeks; a single-storey rear extension 12–16 weeks; a full house refurbishment 4–6 months. We provide a detailed project schedule at contract signing and weekly progress updates throughout the build.

Are you fully insured?

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Yes β€” we carry Β£5 million Public Liability Insurance, Β£10 million Employer's Liability Insurance, and all our work is backed by the FMB's Build Assure 10-year insurance-backed warranty.

Do you work on listed buildings or conservation areas?

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Yes. We have experience with listed property consent and conservation area applications across North-West London, including parts of Harrow, Pinner, Stanmore and Hendon. We'll handle the heritage paperwork on your behalf.

What areas of London do you cover?

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Based in Harrow, we cover all of North-West London and the surrounding boroughs, including Harrow, Edgware, Stanmore, Pinner, Wembley, Kenton, Kingsbury, Hendon, Mill Hill, Northwood, Ruislip and Watford. Get in touch and we'll confirm we can serve your postcode.

Where we work

Building beautiful homes across North-West London.

Based in Harrow, we cover the whole of North-West London and the surrounding Greater London area β€” from Edgware and Stanmore to Wembley, Pinner and beyond.

Get in touch

Let's talk about your project.

Whether you're planning a small renovation or a complete home transformation, we'd love to hear from you. Get in touch for a free, no-obligation site visit and quote.

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Office
139A Streatfield Road, Harrow, HA3 9BL

Request a free quote