Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

Your Family Builders

Putting Transparency Back Into Construction

We only use
City & Guilds
Qualified Tradesmen

Our Services

JNJ Building Services is a distinguished building contractor based in West London, specialising in house extensions, comprehensive home refurbishments, residential renovations, loft conversions, and luxury bespoke builds. Drawing upon over 80 years of collective building expertise, JNJ stands among West London’s most accomplished construction firms.

Our client-centric philosophy ensures complete transparency throughout every stage of your project, whilst our commitment to clear, consistent communication guarantees the faithful realisation of your vision. We offer building services to clients in Ealing, Hammersmith, Kensington, Chiswick, Fulham, Battersea, Acton, Clapham, Balham, Barnes, Putney, Richmond, Shepherds Bush, Teddington and Twickenham.

✅ Independently Vetted & Approved

✅ Committed to Quality & Professionalism

✅ Trusted by Homeowners Nationwide

✅ Verified Customer Reviews

✅ Strict Code of Conduct ensuring high standards on every project.

Gold Rated

WHAT OUR WONDERFUL CLIENTS SAY

This is now 3 projects completed with JNJ, and each time has been incredible. The family team has really looked after us. Always contactable and professional. They improve each time. They have restored our faith in builders!

Outstanding! I have never failed to be hugely impressed with their professionalism. The team is always friendly, contactable, and has creative and practical ideas making them able to work to a budget for excellent results.

I cannot recommend JNJ more highly. Their professionalism and work quality were certainly the highest standard I have experienced from builders based in London. They were a pleasure to work with throughout the duration of our project.

Being designers, we can understand how complicated we can make projects. Working with JNJ, I can say they are the perfect team, not only have they worked with us on commercial projects they are so good we have completed 2 of our own houses with them. We highly recommend!

Working in construction and designing complicated projects, it’s hard to find local and reliable contractors, not with JNJ. We have now been working with them for 10 years handling over many stunning projects for our clients. It’s been a pleasure working with them.

Being based in Birmingham, we took on a project in Putney SW London. Not knowing any contractors, we came across JNJ. Straight from the beginning, we knew this was the team we wanted to work with. This is by far the best construction company we’ve ever worked with.

BUILDING FAMILY HOMES THE RIGHT WAY!

OUR CORE VALUES

1. STRIVE TO BE BETTER THAN OUR PREVIOUS BEST

By working smarter through seeking new ideas.
Learning ways to improve ourselves by reviewing and updating our practices.

2. DELIVER A GREAT CLIENT EXPERIENCE

By operating as authentic, trusted professionals with business-like conduct on the worksite, in the office, and the community.

3. ACT RESPONSIBLY

In a no-blame culture – by operating with integrity, owning mistakes, and using feedback to improve where everyone takes personal ownership to achieve targets.