Trusted Builders in Orpington
If you’re looking for experienced builders in Orpington, BDC Construction delivers high-quality building work for homeowners across Orpington and the wider London Borough of Bromley. From house extensions and loft conversions to full renovations and new builds, we provide expert craftsmanship and a straightforward, hands-on service from first consultation to final handover.
Founded in 2011 by Ben, a builder with over 20 years’ experience, our reputation has been built almost entirely through referrals and repeat clients. We understand the unique character of properties in Orpington — from interwar semis and period homes to post-war builds and modern family houses — and we bring the same attention to detail to every project, no matter the size.
Call us on 01622 946189 or get a free quote to discuss your project.
House Extensions & Additions in Orpington
Looking to create more space in your Orpington home? Whether you need a larger kitchen, an additional bedroom, or a bright open-plan living area, our team designs and builds bespoke house extensions that blend with your existing property and add genuine value.
We handle every type of extension across the Orpington area — single-storey rear extensions, two-storey side extensions, wraparound designs and porch additions. With parts of Orpington sitting within conservation areas or close to Metropolitan Green Belt boundaries, we understand the planning considerations involved and can guide you through the process from day one.
Every extension we build is project-managed by Ben personally, ensuring consistent quality, clear communication and no surprises on cost or timeline.
View our extensions portfolio →
Renovations & Refurbishments in Orpington
Orpington is home to a wide mix of properties, from Edwardian and Victorian terraces to 1930s interwar semis, post-war council builds and substantial detached family homes. Many of these properties have enormous potential that a well-planned renovation can unlock — whether that means reconfiguring dated layouts, modernising kitchens and bathrooms, or carrying out a complete whole-home refurbishment.
As an experienced construction company in Orpington, we manage renovations of every scale. We coordinate all trades in-house, from structural alterations and steelwork through to plastering, electrics, plumbing and final decoration. Our clients regularly tell us that the process was far less disruptive than they expected — we partition living spaces, keep sites clean and communicate openly throughout.
View our renovation projects →
Loft Conversions in Orpington
A loft conversion is one of the most cost-effective ways to add space and value to your Orpington home — often without the need for a full planning application. We build dormer loft conversions, hip-to-gable conversions, Velux conversions and mansard designs, tailored to the property type and your specific requirements.
With average property prices in Orpington sitting above £580,000, a well-executed loft conversion can add significant value while giving you the extra bedroom, home office or bathroom your family needs. We handle everything from initial structural surveys and party wall agreements through to Building Control sign-off and final finishing.
Learn more about our loft conversion service →
Conversions & New Builds in Orpington
Whether you’re converting a garage, barn or outbuilding, or starting a completely new build from the ground up, BDC Construction has the expertise to manage the full process. We take projects from groundworks and foundations through structural work, roofing, first and second fix, and right through to decoration and landscaping.
The Orpington area includes everything from suburban plots in established neighbourhoods like Goddington and Crofton to larger sites on the fringes of the Green Belt near Chelsfield, Farnborough and Green Street Green. We’ve worked on conversion and new build projects across Kent and South East London and understand the local planning requirements, including the additional considerations that come with building within the Metropolitan Green Belt or near conservation areas managed by Bromley Council.
Why Orpington Homeowners Choose BDC Construction
- 20+ years’ experience — Founded by Ben, who personally oversees every project from start to finish.
- Built on referrals — The majority of our work comes through recommendations from previous clients.
- Premium finishing standards — We don’t cut corners. Every build is completed to a standard we’re proud to put our name to.
- Clear, honest pricing — Detailed quotes with no hidden costs. We give you a realistic budget and stick to it.
- Planning guidance — We can advise on permitted development, conservation area restrictions and introduce you to trusted architects if needed.
- Fully insured — Giving you peace of mind throughout every stage of your build.
- Clean, tidy sites — We partition living spaces so you can continue your daily routine with minimal disruption.
Building in Orpington – What You Need to Know
Orpington sits within the London Borough of Bromley — the largest borough in Greater London — and with that comes specific planning and building considerations that not every contractor understands. Here’s what makes building work in Orpington different:
Conservation areas — The London Borough of Bromley has 47 designated conservation areas, including the Orpington Priory Conservation Area and Broomhill Conservation Area within Orpington itself, as well as nearby Chelsfield Village, Petts Wood and Farnborough Park. If your property falls within one, you may face additional restrictions on materials, design and external alterations. We’re experienced in working within these constraints and can help ensure your project respects the character of the area while still delivering the result you want.
Metropolitan Green Belt — The majority of the London Borough of Bromley is designated Metropolitan Green Belt, including large areas to the south and east of Orpington around Chelsfield, Green Street Green, Pratts Bottom and Downe. This doesn’t mean you can’t extend or build — but it does mean the planning process needs to be handled carefully. We can advise on what’s achievable under permitted development and what will require a formal application to Bromley Council.
Listed buildings and heritage assets — Orpington and the surrounding villages contain a number of listed buildings, including the Grade II* listed Priory and its associated structures. If you’re planning alterations to a listed property, you’ll need Listed Building Consent in addition to any standard planning permission. We have experience working sensitively with older and protected structures, using appropriate materials and techniques to preserve their character.
High property values — With average house prices in Orpington sitting above £580,000, investing in quality building work makes sound financial sense. A well-built extension or loft conversion not only improves your quality of life but can add substantial value to your property.
Areas We Cover in Orpington and the Surrounding Area
We work with homeowners across Orpington and the wider London Borough of Bromley, including:
Orpington town centre, Petts Wood, Chelsfield, Crofton, Goddington, Green Street Green, Farnborough, St Mary Cray, St Paul’s Cray, Locksbottom, Keston, Downe, Pratts Bottom, Broom Hill, Chislehurst, Bromley, Beckenham, Hayes, West Wickham, Biggin Hill and Swanley.
We also serve homeowners across the wider Kent area from our base in Maidstone, including Sevenoaks, Tunbridge Wells, Tonbridge, Medway and Ashford.
See all areas we cover → | Contact us →
Frequently Asked Questions – Building Work in Orpington
How much does a house extension cost in Orpington? Extension costs in Orpington typically range from £40,000 to £100,000 or more, depending on the size, specification and whether the build is single or two-storey. Factors like ground conditions, proximity to boundaries, and whether the property is in a conservation area can also affect the cost. We provide detailed, itemised quotes so you know exactly what you’re paying for before any work begins.
Do I need planning permission to extend my home in Orpington? Many rear and side extensions fall under permitted development rights, meaning you won’t need a formal planning application. However, if your property is in one of Bromley’s 47 conservation areas, is a listed building, or if the proposed extension exceeds certain size limits, you will likely need permission from the London Borough of Bromley. We can assess your specific situation and advise on the best route forward during your free consultation.
How long does a loft conversion take in Orpington? A typical loft conversion takes between 8 and 12 weeks from start to completion, depending on the type of conversion and the complexity of the structural work involved. We keep disruption to a minimum and provide a realistic timeline at the quoting stage so you can plan accordingly.
Can I build on Green Belt land near Orpington? Building within the Metropolitan Green Belt is possible but subject to stricter planning rules. Extensions and alterations to existing homes are often permitted provided they don’t result in disproportionate additions. New builds are more restricted. We can advise on what’s realistic for your property and help you navigate the planning process with Bromley Council.
What areas near Orpington do you cover? We cover the whole Orpington area including Petts Wood, Chelsfield, Crofton, Green Street Green, Farnborough, St Mary Cray, St Paul’s Cray and the surrounding villages. We’re based in Maidstone and work across the whole of Kent and South East London.
Are BDC Construction fully insured? Yes. We carry full public liability insurance and employer’s liability insurance, giving you complete peace of mind throughout every stage of your project.