JNJ Building Services – Award-winning property refurbishment and your local builder in West London

JNJ Building Services – Award-winning property refurbishment and your local builder in West London

JNJ Building Services – Award-winning property refurbishment and your local builder in West London

JNJ Building Services – Award-winning property refurbishment and your local builder in West London

We are approved Which? Trusted Traders and approved Silver members of the Considerate Constructors Scheme.

Welcome to JNJ Building Services, leading property renovation & refurbishment experts. We are award-winning and trusted builders who specialise in the renovation of houses in West London. We have the building experience, skills and knowledge to bring your design to reality.

Building Services we specialise in

Complete Property Renovation Services

We can totally remodel your property to your desired specifications. Whether you want to make more space, divide a property in to flats or repair an existing structure. We can even build your new home from the ground up.

Extensions & Loft Conversions

Extensions and loft conversions add space and value to your home. Let us help you to plan, cost and create your perfect extension. We’ve can provide ideas to help you make the right decision and then deliver it on budget and on time.

Property Refurbishment Services

If your property is in need of repair, modernising or you wish to make it more energy efficient, we can help. We will breath new life into your property, whether for your own benefit or resale.

Bathroom, Kitchen & Outdoor Remodelling

When you want to extend your kitchen, add an en-suite to your bedroom or totally transform your garden and outdoor space, we’ve got the answer. We’ve built our reputation on delivering inspirational designs that add value to your home.

Family-run business with 150+ years of combined building expertise

Our team is made up of skilled tradespeople with over 80 years of expertise in the building and renovations trade.  Being a family-run business, we pride our reputation on the quality of our work. We go the extra mile to ensure we over-deliver at every stage of your project.

Examples of our work

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What our customers say

“JNJ Building services have restored my faith in building firms. We got exactly what we paid for with a high degree of commitment and professionalism. Jamie is 100% committed to meeting client expectations and has a degree of pride in the finish that is rarely seen. Thanks, so much Jamie and team!.”M. Lindar, London, TW10 6DG 

“We were very impressed with Jamie and his team. From day 1, the members of the team were communicative, punctual and smartly dressed. Their attention to detail was second to none (both in terms of finishes as well as hygiene), right up to completion. We highly recommend Jamie and his team. .”

P. Drummond, London, W5 5ED

“Outstanding! I have never failed to be hugely impressed with their professionalism. Jamie, always friendly and contactable, has creative and practical ideas making him able to work a budget to excellent results.”

F. Morgan, London W12

“I cannot recommend JNJ more highly; their professionalism and work quality were certainly the highest standards I have experienced from builders based in London. They were a pleasure to work with throughout the duration of our project and I never lost confidence in their ability to deliver. Invoices were sent on time and all deadlines were met. We even missed them once they left!”

Olivia F, London W12

Meet the Family

Introducing the dynamic family behind our construction company, where passion, expertise, and a commitment to excellence run in the blood. From seasoned industry veterans to the next generation of innovators, our family-driven team is dedicated to building a legacy of quality, integrity, and customer satisfaction. Get to know the faces behind the projects as we construct not just structures, but lasting relationships.

Complex projects delivered to budget & on time


If you’re searching for a reputable building and house renovations company to help you to transform your home, then we can help.

We build new homes, renovate old ones, create loft conversions, install new bathrooms, revamp kitchens and also revitalise outdoor spaces. Our projects add substantial value to what is probably your biggest asset, your West London home.

Our award-winning building services provide expertise across the the West London area, including Richmond, Chiswick, Fulham, Barnes, Putney, Balham, Clapham, Hammersmith, Shepherds Bush, Acton, Ealing, Battersea, Twickenham and Teddington. We also have many building projects in North West London, Beaconsfield, Pinner and Ruislip.

“JNJ is successful not just because of our skilled house extension builders, but because people trust us and know our reputation is built on strong customer care.”

Whether that’s accommodating change mid-way through a project, keeping you informed of costs at every stage or the effort we make to minimise disruption to you and your neighbours, we take pride in our high level of service.

Undertaking a property refurbishment needn’t be stressful! JNJ has the expertise to oversee every aspect involved in house improvement work in a worry-free, professional manner that has you covered. We are also local, so we are happy to pop round to provide a quote on your building project.

Jamie Jenkins, JNJ Builders, West London

Ben Jenkins – Director & Jamie Jenkins – Founder

We’ve built our reputation on trust and the quality of our workmanship. We do everything possible to ensure your renovation goes to plan and to budget. Our customers receive only 1st class customer service.