Builders in Sidcup
Reliable, Experienced Local Builders Serving Sidcup and the Surrounding Areas
If you’re searching for trusted, experienced builders in Sidcup, P J Dunbar Builders Ltd is here to help. Established in 1994, we have proudly served homeowners across Sidcup, Blackfen, Foots Cray, Albany Park, Longlands, and the wider DA14 and DA15 areas for over 30 years.
As a long-standing, family-run building company, we take pride in delivering high-quality workmanship, honest communication, and reliable project management from start to finish. Whether you’re planning a house extension, a loft conversion, a full renovation, or a new build, we work closely with you to ensure the result meets your needs and enhances your home for years to come.
From period terraces to 1930s semis and modern family homes, we understand Sidcup’s property styles and planning requirements — and our experienced team is committed to completing your project safely, efficiently, and to the highest standard.
Building Services We Offer in Sidcup
We provide a complete range of domestic and commercial building services throughout Sidcup, helping homeowners increase space, comfort, and long-term property value. Whether you’re improving a family home, restoring an older property, or planning something completely new, our team delivers reliable workmanship and practical guidance every step of the way.
House Extensions
Extend your living space and upgrade your home with a professionally built extension. We carry out all types of extensions in Sidcup, including rear kitchen extensions, single-storey additions, double-storey builds, wrap-around designs, and side-return extensions.
Many Sidcup homeowners choose extensions to create open-plan kitchens, family rooms, larger dining areas, or additional bedrooms. We handle everything — from planning and design to construction and finishing — ensuring a smooth, well-managed process from start to finish.
Loft Conversions
Sidcup properties, particularly 1930s semis and terraced homes, offer excellent potential for loft conversions. We specialise in dormer, hip-to-gable, Velux, and L-shaped conversions that transform unused attic spaces into bright, practical rooms.
Whether you want a master bedroom with an en-suite, a home office, a nursery, or additional living space, our team handles structural work, insulation, plumbing, electrics, and all finishing details to deliver a seamless extension of your home.
Home Renovations
From modernising older homes to reconfiguring layouts for growing families, we offer full renovation and refurbishment services across Sidcup. This includes structural alterations, kitchen and bathroom upgrades, plastering, rewiring, flooring, and complete interior refurbishments.
Our goal is to deliver high-quality finishes and practical improvements that make your home more comfortable, functional, and future-proof.
New Build Homes
If you’re planning a new build in Sidcup, we provide a full end-to-end construction service — from groundwork and foundations to roofing, interiors, and the final handover. With more than 30 years of experience, we work closely with architects, surveyors, and local authorities to ensure your new home is built safely, efficiently, and to a high standard.
Whether you’re building a single home or a small residential project, we bring reliability, consistency, and long-standing craftsmanship to every stage.
Commercial Building Work
We provide safe, efficient commercial building services throughout the Sidcup area, including office refurbishments, retail unit fit-outs, commercial extensions, and property improvements for businesses in DA14 and DA15.
We work with minimal disruption, clear communication, and strong attention to safety and compliance — ensuring your business can continue operating smoothly.
Listed & Heritage Building Work
Sidcup and nearby areas include conservation zones and historic properties requiring specialist care. We provide sympathetic restoration, refurbishment, and structural improvements that preserve original character while enhancing safety and functionality.
Our team uses a combination of traditional craftsmanship and modern building methods to deliver respectful, long-lasting results.
Leading House Extension & Loft Conversion Specialists in Sidcup
P J Dunbar Builders Ltd is a trusted, family-run building company serving Sidcup, Blackfen, Foots Cray, Albany Park, Longlands, and nearby areas since 1994.
For over 30 years, we’ve specialised in house extensions, loft conversions, and full home renovations, helping families across Sidcup create more space, improve their layout, and add long-term value to their homes.
Whether you're considering a kitchen extension, a double-storey addition, a rear or side-return extension, or a dormer loft conversion, our experienced team manages every stage — from design and planning to completion — with craftsmanship, transparency, and genuine care.
Our reputation in Sidcup has been built on decades of high-quality workmanship, honest communication, and family values that prioritise our clients’
Why Choose P J Dunbar Builders for Your Project in Sidcup?
For over 30 years, homeowners across Sidcup have trusted P J Dunbar Builders Ltd for building work that’s completed reliably, professionally, and with genuine care. As a family-run business established in 1994, we’ve built our reputation on honesty, transparency, and workmanship that stands the test of time.
Many of our clients in Sidcup, Blackfen, Albany Park, and Foots Cray come to us through personal recommendations — a sign of the high-quality service and consistent results we aim to deliver on every project.
Whether your home is a Victorian terrace, a 1930s semi, a period property, or a modern development, we understand the local building styles and planning requirements common to the DA14 and DA15 areas. Our long-standing team ensures your project runs smoothly from the first conversation to the final handover.
Decades of Proven Experience
With more than 30 years of building experience in Sidcup and the surrounding DA areas, we bring deep knowledge, skilled craftsmanship, and reliable results to every project — from small refurbishments to large extensions and new builds.
Family-Run & Local Since 1994
Since 1994, we’ve remained a family-run business with values rooted in honesty, communication, and genuine care. Many of our Sidcup clients recommend us to neighbours, friends, and family because they trust our workmanship and reliability.
Complete, Stress-Free Project Management
From planning and design to construction and finishing, we manage every stage under one roof. With a single point of contact and a long-standing team, your project stays organised, efficient, and worry-free.
Transparent & Honest Pricing
Our quotes are detailed, itemised, and clear — with no hidden extras or vague estimates. We believe in straightforward, honest pricing so you always know exactly what you’re paying for.
Choose a Builder You Can Trust in Sidcup
Many homeowners come to us after dealing with builders who cut corners, disappear mid-project, or don’t communicate properly. That’s why we’ve built our business on honesty, clarity, and reliable workmanship — values we’ve upheld since 1994.
Our long-standing team takes pride in doing things the right way: keeping the site tidy, keeping you updated, and ensuring every part of the build is completed to a high standard.
If you’d like extra reassurance before starting your project, feel free to read our reviews from customers across Sidcup, Blackfen, Albany Park, and Foots Cray.
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 Sidcup
We’ve completed a wide variety of building projects across Sidcup, from rear kitchen extensions and loft conversions to full home renovations and new build properties.
Each project is delivered by our experienced, long-standing team and reflects the workmanship and reliability homeowners expect from us.
Below is a small preview of the type of work we regularly complete for families in Sidcup, Blackfen, and the surrounding areas. To explore more examples, you can browse our full project portfolio.
What Sidcup Homeowners Say About Our Work
We’re proud to support families and homeowners across Sidcup, many of whom return to us for future projects or recommend us to friends, neighbours, and colleagues. Here are a few comments from clients we’ve recently worked with in the Sidcup.
FAQs — Building Services in Sidcup
Yes — we work across the whole Sidcup area, including Blackfen, Foots Cray, Longlands, Albany Park, Marlborough Park, and surrounding parts of DA14 and DA15. If you’re unsure whether your property is within our service area, just ask — we’re always happy to confirm.
Some projects fall under permitted development, while others require planning approval from Bexley Council. We can advise on what applies to your property and handle the entire planning process — including architectural drawings, structural calculations, and submitting your application.
Yes — Sidcup property values are strong, and well-designed extensions and loft conversions typically increase value significantly, especially on 1930s semis and Victorian terraces. Many clients add £60k–£120k+ to their home’s value after the work is completed.
Yes — we work directly with Bexley Building Control to ensure your project is compliant, inspected at each stage, and fully signed off upon completion.
All work includes a standard workmanship guarantee, and we also offer optional long-term guarantees for additional peace of mind. We can discuss these during your quotation.
Costs depend on size, design, and structural requirements, but most single-storey extensions in Sidcup fall between £45,000–£75,000, and double-storey extensions typically start from £70,000–£120,000. After a site visit, we’ll give you a detailed, itemised quote with no hidden extras.
Most loft conversions take 6–10 weeks, depending on the design (dormer, hip-to-gable, L-shaped, etc.). Before starting, we provide a clear schedule so you know exactly what to expect at each stage.
Absolutely. We handle everything from initial concept to detailed architectural plans, structural engineering calculations, and building control submissions. You won’t need to find external designers unless you want to.
Yes — many Sidcup homeowners come to us with plans already prepared. We’ll review them, provide feedback if needed, and proceed with construction exactly to specification.
Simply get in touch using the form or phone number on this page. We’ll schedule a visit at a convenient time, answer your questions, and provide a clear, detailed quotation — with no pressure or obligation.
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 Start Your Project in Sidcup?
If you're planning a house extension, loft conversion, renovation, or new build in Sidcup, 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.