Builders in Orpington
Trusted, Experienced Local Builders Serving Orpington and the Surrounding BR Areas
If you’re looking for reliable, experienced builders in Orpington, P J Dunbar Builders Ltd is here to help. Established in 1994, we provide high-quality building services across Orpington, Petts Wood, St Mary Cray, Chelsfield, Farnborough, Green Street Green, and the wider BR5 and BR6 areas.
As a long-established, family-run building company, we combine skilled craftsmanship with honest communication and well-organised project management. Whether you’re planning a house extension, loft conversion, renovation, or new build, our experienced team delivers dependable building work designed to improve your home, your lifestyle, and its long-term value.
From 1930s semis in Petts Wood and St Mary Cray to detached homes in Chelsfield and modern properties around Orpington town centre, we understand the local property styles and planning considerations — allowing us to deliver professional, compliant, and high-quality results on every project.
Building Services We Offer in Orpington
We provide a comprehensive range of domestic and commercial building services throughout Orpington, helping homeowners create more space, modernise their homes, and bring long-term plans to life. Whether you’re upgrading a family home or starting a larger construction project, our team offers practical guidance and reliable workmanship at every stage.
House Extensions
Add valuable space and improve the flow of your home with a professionally built extension. We carry out all types of house extensions in Orpington, including rear kitchen extensions, side-return extensions, wraparound builds, single-storey additions, and double-storey extensions.
Many Orpington homeowners choose extensions to create open-plan kitchens, larger dining areas, or additional bedrooms. We manage the full process — from planning and design through to construction and finishing — ensuring a smooth, well-organised build.
Loft Conversions
Properties across Orpington and the surrounding BR areas often offer excellent loft conversion potential. We specialise in dormer, hip-to-gable, Velux, and L-shaped loft conversions that transform unused attic space into bright, comfortable, and practical rooms.
Whether you’re creating a master bedroom, home office, or extra living space, our team handles all structural work, insulation, electrics, plumbing, and finishing to deliver a seamless extension of your home.
Home Renovations
From modernising older properties to reconfiguring layouts for growing families, we offer full renovation and refurbishment services across Orpington. This includes structural alterations, kitchen and bathroom refurbishments, rewiring, plastering, flooring, and complete interior overhauls.
Our focus is on delivering high-quality finishes and practical improvements that enhance comfort, usability, and long-term value.
New Build Homes
Planning a new build in Orpington? We provide a complete end-to-end construction service, covering groundwork, foundations, brickwork, roofing, interiors, and final handover.
With decades of experience working alongside architects, surveyors, and local authorities, we ensure new build projects are delivered safely, efficiently, and to a consistently high standard.
Commercial Building Work
We deliver reliable commercial building services across Orpington, supporting offices, shops, and business premises with refurbishments, fit-outs, structural works, and maintenance projects.
Our team works with minimal disruption, clear communication, and a strong focus on safety and compliance helping businesses upgrade their premises efficiently.
Listed & Period Property Work
Orpington and nearby areas include period homes and character properties that require specialist care. We carry out sympathetic restoration, refurbishment, and structural improvements that preserve original features while improving safety, comfort, and functionality.
Traditional craftsmanship combined with modern building standards ensures respectful, long-lasting results.
Leading House Extension & Loft Conversion Specialists in Orpington
P J Dunbar Builders Ltd is a trusted, family-run building company serving Orpington and surrounding areas since 1994.
For over 30 years, we’ve specialised in house extensions, loft conversions, and home renovations, helping families across Orpington create more space, improve layouts, and add long-term value to their homes.
Whether you’re planning a kitchen extension, rear or side-return build, double-storey extension, or a high-quality loft conversion, our experienced team manages every stage — from design and planning through to construction and completion.
Our reputation in Orpington has been built on honest pricing, clear communication, and a commitment to doing things properly.
Why Choose P J Dunbar Builders for Your Project in Orpington?
For over three decades, homeowners across Orpington have trusted P J Dunbar Builders Ltd to deliver reliable, well-managed building work finished to a high standard. As a family-run company, we take pride in honesty, skilled workmanship, and communication that keeps your project running smoothly.
Many of our clients in Orpington, Petts Wood, Chelsfield, and Farnborough come to us through personal recommendations — a reflection of the consistent quality and service we aim to deliver on every job.
Whether your home is a period property, a 1930s semi, or a modern family house, we understand the local building styles and planning requirements across the BR postcode areas. Our long-standing team ensures every project is completed safely, efficiently, and with attention to detail.
Decades of Proven Experience
Over 30 years of building experience across Orpington, covering everything from small upgrades to major extensions and new builds.
Family-Run & Highly Recommended
Established in 1994, we’re known for honesty, reliability, and strong word-of-mouth recommendations from local homeowners.
Smooth, Well-Managed Projects
One experienced team, one point of contact, and a well-organised process from start to finish.
Transparent, Fair Pricing
Clear, itemised quotes with no hidden extras — so you know exactly what to expect before work begins.
Choose a Builder You Can Trust in Orpington
Many homeowners contact us after dealing with builders who cut corners, disappear mid-project, or fail to communicate clearly. We’ve built our company on the opposite approach — honesty, reliability, and workmanship that lasts.
Our long-standing team keeps sites tidy, communicates clearly, and delivers results you can be proud of.
If you’d like extra reassurance, feel free to read reviews from customers across Orpington and nearby areas.
Our Experience in Numbers
Completed Projects across Bexley, Kent & South East London
Work from Repeat Clients & Referrals.
Years in Business Since 1994
Recent Building Projects in Orpington
We’ve completed a wide range of building projects across Orpington, including house extensions, loft conversions, full home renovations, and new build properties.
Every project is delivered by our experienced, long-standing team and reflects the quality and reliability homeowners expect from us.
Below is a small preview of the type of work we complete for families in Orpington and surrounding areas. To see more, browse our full project portfolio.
What Orpington Homeowners Say About Our Work
We’re proud to support homeowners across Orpington, many of whom return to us for future projects or recommend us to friends and family.
Here are a few comments from clients we’ve recently worked with.
FAQs — Building Services in Sidcup
Yes. We work across Orpington, Petts Wood, St Mary Cray, Chelsfield, Farnborough, Green Street Green, and surrounding BR areas.
Timescales vary by project, but most extensions take 8–12 weeks and loft conversions around 6–10 weeks once work begins.
Yes. We manage drawings, planning applications, permitted development checks, and building control where required.
Yes. We provide free, no-obligation site visits and detailed, itemised quotations.
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 Orpington.
Ready to Start Your Project in Orpington?
If you’re planning an extension, loft conversion, renovation, or new build in Orpington, our experienced team is here to help.
Whether you’re still exploring ideas or ready to move forward, we offer honest advice, transparent pricing, and high-quality workmanship.