#1 Trusted Builders in Kent, Bexley & Bexleyheath Since 1994
Proudly family-run since 1994, PJ Dunbar Builders Limited delivers high-quality house extensions, loft conversions, and home renovations across Bexley, Bexleyheath, Dartford, Sidcup, and surrounding areas.
From initial plans to final finishes — we turn your ideas into lasting spaces built with care, precision, and experience.
Leading house extension and loft conversion specialists in Kent
PJ Dunbar Builders limited is a trusted, family-run building company based in Kent, proudly serving homeowners across Bexley, Bexleyheath, Dartford, Sidcup, and surrounding areas since 1994.
For over 30 years, we’ve specialised in house extensions, loft conversions, and home renovations, helping families across the South East create more space, comfort, and value in their homes.
Whether you’re planning a kitchen extension, rear or side return, or a dormer loft conversion, our experienced team handles every stage — from design and planning to completion — with craftsmanship, transparency, and care.
Our reputation has been built over decades of quality workmanship, honest communication, and family values that put our customers first. At PJ Builders, we don’t just build houses — we help build homes that grow with you.
If you’re searching for trusted local builders in Bexley, Bexleyheath, or Dartford, get in touch today to start planning your dream home with a team that’s been trusted since 1994.
Complete Building & Construction Services Across Bexley & Kent
At P J Dunbar Builders Ltd, we offer a fully managed, design-to-build service for homeowners and businesses across Bexley, Kent, and South East London. Our family-run team handles every stage in-house, ensuring clear communication, reliable scheduling, and consistent quality from start to finish.
Explore our range of services below — and if you don’t see what you’re looking for, just get in touch. We’re always happy to help.
House Extensions
Need more space without the hassle of moving? Our house extension specialists in Bexley and Kent design and build tailored additions that expand your home beautifully — adding comfort, value, and style to everyday living.
Loft Conversions
Turn your unused loft into a bright new bedroom, office, or living area. With decades of experience in loft conversions across Bexley, Dartford, and South East London, we handle design, planning, and construction for a seamless finish.
Home Renovations
Want to modernise your home or restore its original charm? Our home renovation experts in Kent transform kitchens, bathrooms, and full properties with high-quality workmanship and attention to detail that stand the test of time.
New Builds
Building your dream home starts with a trusted partner. As experienced new-build contractors in Bexley and Kent, we manage every stage — from groundwork to final handover — ensuring quality, transparency, and peace of mind.
Commercial Projects
Expanding or improving your business premises? We deliver professional commercial building services across South East London and Kent, completing every project on schedule and to specification with minimal disruption to your operations.
Listed Buildings
Preserving history takes skill and respect. Our team specialises in listed building restorations across Kent and South East London, combining traditional craftsmanship with modern techniques to protect your property’s heritage for generations.
Build with Confidence — Work with Kent’s Trusted Local Builders
With over 30 years of experience, P J Dunbar Builders Ltd has become one of the most trusted builders in Bexley, Kent, and South East London. We offer a complete range of building, extension, and renovation services to suit every homeowner’s needs — from small improvements to large-scale projects.
If you’re unsure whether we provide the service you need, simply get in touch — we’ll be happy to offer friendly advice and a free estimate.
Trusted by Homeowners Across Bexley & Kent
For over 30 years, we’ve built our reputation on quality, reliability, and customer satisfaction. Here’s what our clients have to say about working with us.
Our Recent Building Projects Across Bexley & Kent
Let our work speak for itself. Over the past 30 years, P J Dunbar Builders Ltd has completed a wide range of house extensions, loft conversions, renovations, and new-build projects across Bexley, Dartford, Sidcup, and South East London.
Each project reflects the same commitment to craftsmanship, attention to detail, and lasting quality that has made us one of the most trusted local builders in Kent.
Explore a selection of our recent work below — and see how we turn ideas into beautifully finished homes.
Why Homeowners Across Bexley & Kent Choose P J Dunbar Builders Ltd
When it comes to choosing a builder, nothing beats experience and trust. For over 30 years, our family-run team has completed hundreds of successful extensions, loft conversions, renovations, and new-builds across Bexley, Kent, and South East London.
We’ve built our reputation on quality workmanship, honest communication, and projects that finish on time and on budget — the result of decades of hands-on experience and teamwork.
Decades of Experience
Established in 1994, our team brings more than 30 years of proven building knowledge to every project, large or small.
Family-Run & Local Since 1994
As a Bexley-based company, we value personal service, clear communication, and genuine care for every client’s home.
Complete Design-to-Build Service
From initial design to final construction, we manage every stage in-house to keep your project organised, efficient and stress-free.
Transparent & Honest Pricing
We believe in honesty from start to finish. You’ll always know what you’re paying for — no hidden extras or unexpected costs.
Trusted by Homeowners Across Bexley & Kent
For over 30 years, we’ve built our reputation on quality, reliability, and customer satisfaction. Here’s what our clients have to say about working with us.
Build with Confidence — Work with Kent’s Trusted Local Builders
With over 30 years of experience, P J Dunbar Builders Ltd has become one of the most trusted builders in Bexley, Kent, and South East London. We offer a complete range of building, extension, and renovation services to suit every homeowner’s needs — from small improvements to large-scale projects.
If you’re unsure whether we provide the service you need, simply get in touch — we’ll be happy to offer friendly advice and a free estimate.
Building FAQs — Expert Answers fromP J Dunbar Builders Ltd
Starting a building project comes with plenty of questions. With over 30 years of experience, P J Dunbar Builders Ltd provides clear, honest advice to homeowners across Bexley, Kent, and South East London.
Here you’ll find answers to the most common questions about our house extensions, loft conversions, renovations, and new-build services.
The cost of a house extension in Kent typically starts from £1,800–£2,500 per square metre, depending on design, materials, and access.
At P J Dunbar Builders Ltd, we provide transparent, itemised quotes so you always know what’s included — with no hidden extras or unexpected costs.
Most single-storey extensions take around 8–10 weeks to complete, while larger or double-storey builds may take longer.
We provide a detailed project timeline before starting so you can plan with confidence and avoid unnecessary delays.
Many loft conversions and single-storey extensions fall under permitted development, meaning you may not need planning permission.
However, rules vary by property and local council. Our team can help you check and, if needed, handle the planning application on your behalf.
We’re based in Bexley and proudly serve Kent, Bexleyheath, Dartford, Sidcup, and surrounding parts of South East London.
If you’re nearby, we’d be happy to visit your property to discuss your project and provide a free estimate.
Yes — we offer free, no-obligation estimates for all building projects.
You can send us your drawings or ideas via email, or arrange a site visit so we can assess your requirements accurately before quoting.
Absolutely. We offer a complete design-to-build service, managing everything from initial planning and design to construction and finishing.
Our in-house team ensures your project runs smoothly, efficiently, and to the highest standard.
Yes. P J Dunbar Builders Ltd is fully insured, and our skilled craftsmen meet all relevant UK building regulations and health and safety standards.
We can also provide references and proof of insurance on request for complete peace of mind.
Yes. All our projects come with a standard quality guarantee, and we also offer the option of a 10-year FMB-backed warranty for added protection.
We take pride in the durability of our work and stand behind every project we complete.
We specialise in house extensions, loft conversions, home renovations, new builds, and listed building restorations.
Whether you’re updating a modern home or restoring a period property, our team brings decades of experience and craftsmanship to every project.
With over 30 years of experience, a trusted local reputation, and a fully managed in-house service, P J Dunbar Builders Ltd offers something few others do — craftsmanship backed by integrity, reliability, and genuine care for your home.
Most of our work comes from referrals and repeat clients, a testament to the quality and service we’ve maintained since 1995.
Still have questions?
If you didn’t find what you were looking for, our team is happy to help.
Get in touch today for friendly, no-obligation advice about your extension, renovation, or new-build project in Bexley or Kent.
Ready to Build with Kent’s Trusted Local Builders?
If you’re planning a house extension, loft conversion, or home renovation in Bexley or Kent, let’s make it happen. At P J Dunbar Builders Ltd, we’ve spent over 30 years helping homeowners turn ideas into beautifully built spaces — delivered on time, on budget, and with care at every step.
We’ll guide you through the process from the first chat to the final finish — so you can relax knowing your home’s in expert hands.