Your Home Improvement Partners

W4 Builders specialise in Full Home Refurbishments,
Loft Conversions and House Extensions in West & South London.

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W4  Builders kitchen extension Hanwell blurb

House Refurbishments

Embarking on your very own grand design? Our experienced team can guide you through every step!

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House Extensions

Maximise your ground-floor space with a home extension, and create an open living space for your family.

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W4 Builders - Loft Conversion

Loft Conversions

Transform your unused attic space into a valuable living space, additional bedroom or home office! 

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Your Go-To London Builders

W4 Builders are a general building company based in West London. We specialise in bespoke and hassle-free approach to residential projects with a particular focus on extensions, loft conversions, and full house refurbishments in Central, West and South-West London

We pride ourselves in hands-on project management, and offer wide range of building services: bespoke joinery, electrical, plumbing, painting and decorating, flooring and more, to make sure you have the experienced and reliable craftsmen in place right from the initial planning stages to completion.


We take pride in quality of our work








Quote Accuracy



What Can You Expect

Full Project Transparency

We understand how stressful and frustrating the process can become for homeowners. We pride ourselves in excellent communication and full project and cost transparency throughout the project and genuine, hassle- free process.

Easy Payment Plan

With payments spread throughout the process and tied to milestones, you know exactly where your money are going.

High Standard

We set high standards and expectations for our team of experienced and skilled tradesman, so we can provide bespoke services exceeding our customers’ expectations.

Why Choose Us

Experience and Expertise

Timeliness and Reliability

Comprehensive Services

Quality Guarantee

Individual Approach


Book a FREE Consultation

Book a FREE consultation with a member of W4 Builders team. We'll visit your property, discuss your needs & share some of our ideas & recommendations for your space.

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