Professional Building company

House Extension Design & Build Company

  • New Builds
  • Extensions
  • Loft Conversions
  • Conservatories
  • Renovations
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WELCOME TO B&N BUILDING

With over 21 years of experience, B&N Building is a design and build company in London, specialising in loft conversions and house extensions that elevate your living space. We deliver exceptional workmanship across every project — from new builds and basement conversions to bespoke kitchen and bathroom renovations, combining intelligent design, practicality, and refined finishes to enhance comfort and value in your home.

Modern white kitchen with herringbone flooring and marble worktops designed and installed by BN Building in London.
A contemporary kitchen completed by BN Building, showcasing sleek cabinetry, integrated appliances, and premium finishes.

About B&N Building

B&N Building is a family-run business with many years of experience specializing in extensions, loft conversions, and renovations.

We work in London and Essex, especially in North and North East London, Chigwell, and nearby areas. We pride ourselves on our personal service, which has earned us a good reputation in the community.

We approach every project with care, ensuring attention to detail and a commitment to excellence.

Whether it’s extensions, bespoke joinery, or full refurbishments, we work closely with clients to bring their vision to life.

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Our Services:

At B&N Building, we bring your vision to life with our expert building services across Chigwell, Essex, and surrounding areas. With a reputation for quality craftsmanship and attention to detail, we specialize in transforming homes to meet the highest standards.

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Open-plan kitchen and dining area created as part of a house extension by BN Building in North London
A stunning open-plan kitchen and dining space completed by BN Building as part of a full house extension in North London, featuring black cabinetry, marble worktops, and bi-fold doors opening to the garden.

Our Project Portfolio

Take a look at some of the exceptional projects we’ve completed. From modern renovations to bespoke extensions, our gallery showcases the quality, craftsmanship, and attention to detail that BN Building brings to every home transformation. See our expertise in action across various locations.

  • Modern home extension with black-framed glass sliding doors, herringbone flooring, and a stylish interior built by B&N Building in Barnet.
  • A modern house extension in Bushey WD23 featuring a striking geometric-patterned feature wall, a luxurious green velvet sofa, and a bespoke bar cabinet with gold accents.
  • Modern white kitchen with built-in shelving and integrated appliances, part of a house extension project by BN Building in North London.
  • Open-plan kitchen and dining area created as part of a house extension by BN Building in North London
  • Stylish new kitchen installed by local builders in Chigwell, featuring modern appliances and elegant finishes.
  • Stylish basement transformed into a private cinema with luxurious blue sofas, tailored LED lighting, and a large projection screen.
  • Newly completed home extension and modern renovation by builders in Chigwell, featuring a contemporary exterior and spacious interiors.
  • Modern house extension in Bushey WD23 featuring a stylish lounge area with a geometric-patterned feature wall, elegant furniture, and a bespoke bar unit.
  • Modern rear extension with bi-fold doors on a Victorian house.

Frequently Asked Questions

We understand that starting a building project can come with many questions. Below are some of the most frequently asked questions from our clients, covering everything from our services to project timelines and planning permission. If you have any additional questions, feel free to contact us directly!

B&N Building specializes in house extensions, loft conversions, bespoke joinery, basement conversions, kitchen design and installation, as well as complete home renovations and refurbishments.

Yes, we operate throughout London, especially in North and North East London, as well as Essex, including Chigwell and surrounding areas.

You can request a free quote by emailing us or filling out the online form on our Contact Us page. We’ll arrange a consultation to discuss your project in detail.

The timeline varies depending on the size and scope of the project. After an initial consultation, we’ll provide a detailed timeline so you know exactly what to expect.

Yes, B&N Building is fully licensed and insured, ensuring that all our work meets the highest safety and quality standards.

Absolutely. We can assist with the planning permission process, guiding you through any necessary paperwork and local council approvals.

Yes, we provide bespoke design services tailored to your unique needs, whether it’s for a new kitchen, joinery, or any other custom work.

We maintain open communication throughout the project and provide regular updates, ensuring you’re informed every step of the way.

What Our Clients Say?

Explore some of the feedback from our valued clients on Yell. Our commitment to quality and customer satisfaction is reflected in the experiences shared by those who have chosen us for their projects. See why clients choose us time and again for reliability, professionalism, and exceptional results.

25 reviews

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Contact B&N Building

We’re here to help you improve your property and make it work perfectly for you. Whether you’re looking to add more space with a loft conversion, house extension, or want to completely renovate your home, B&N Building is ready to assist you at every step of the process.


Contact us today, and our team will get back to you as soon as possible. Let’s transform your home into the space you’ve always envisioned.

Phone

020 7796 0000

Email

info@bnbuilding.uk

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