Home Extension Builders in Dartford
Trusted home extension specialists in Dartford (DA1, DA2) offering expert design, planning, and full construction - all delivered by Buildaway.
Your Local Home Extension
Specialists in
Dartford
Buildaway delivers high-quality home extensions across Dartford and the wider North Kent area
(DA1, DA2), with solid experience working across the borough's varied property landscape. From
the Victorian and Edwardian terraces in central Dartford and Stone to the post-war semis and
detached properties in Wilmington, Sutton-at-Hone, and Swanscombe, our home extension
specialists in Dartford know what each property type structurally demands and what the local
planning environment requires.
Our in-house team manages every stage directly - home extension planning in Dartford,
architectural design, structural calculations, planning applications, Building Control
approvals, party wall agreements, groundworks, brickwork, roofing, and full internal finishing,
with no key trades contracted out. Whether you're exploring home extension ideas, trying to
understand home extension cost in Dartford, or working out how much does a home extension cost
for your Kent property, our home extension company in Dartford provides clear, upfront answers
without any pressure.
From single-storey rear extensions and side returns through to double-storey and wrap-around
home extensions in Dartford, Buildaway builds home extension plans around your property, budget,
and lifestyle. As a trusted home extension specialist in Dartford, we handle everything from
first feasibility assessment to final Building Control sign-off - delivering a finished
extension that meets every regulation and adds genuine value to your home.
Our Home Extension Packages in Dartford
Single-Storey Rear Extension
Ideal for expanding your living space. Includes structural survey, architectural drawings, groundworks and foundations, brickwork and roofing, bi-fold or sliding doors, heating installation, building regulation approval.
Side Return Extension (Most Popular)
Complete kitchen and living area transformation. Includes structural assessment, full groundworks, steelwork if required, brickwork and matching materials, glazing and doors, full insulation, electrics upgrade, flooring, building regulation approval, waste removal.
Double-Storey Extension
For those seeking maximum space addition. Includes architectural design, full structural alterations, steelwork and foundations, bespoke staircase, multiple room creation, bathroom or en-suite option, planning and building regulation handling.
Why Dartford Homeowners Choose Buildaway
Local teams with detailed knowledge of DA1, DA2, and surrounding areas
Based in your area with local expertise and reputation.
Bespoke extension designs for homes, new-builds, and apartments
We handle everything so you don't have to worry.
Transparent and honest pricing with no hidden fees or unexpected charges.
Clear upfront pricing with no surprises along the way.
Full project management from design to flawless completion
Meticulous craftsmanship in every aspect of your extension.
Trusted reputation built working near Dartford Town Centre, Princes Road, and beyond
Professional consultation and detailed quotes at no cost.
What's Included in Your Home Extensions Services
Everything you need for a seamless, stress-free home extension - from structure to finish.
Full groundworks and structural build
Complete groundwork preparation and structural construction services.
Plumbing, electrics, and heating integration
Professional installation of all mechanical and electrical systems.
Roofing, windows, and external finish
Complete roofing, window installation and exterior finishing.
Plastering, flooring, and decorating
Professional plastering, flooring and decorating services.
Interior fit-out and finishing
Complete interior fit-out and professional finishing touches.
Project management and schedule control
Professional project management and timeline control throughout.
Latest Home Extension Insights
We publish detailed home extension guides and cost insights for homeowners across Dartford and surrounding areas, helping customers plan renovations with clarity before starting work.
House Extension Costs in Dartford 2025 - The Complete Homeowner's Guide
A complete breakdown of home extension costs in Dartford. Understand labour, materials, and budgeting for your project.
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Do I Need Planning Permission for a Home Extension in Dartford?
Expert insights into planning permission and building regulations for home extensions in Dartford.
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Single-Storey vs Double-Storey Extensions in Dartford 2026: Cost, Space, and ROI
Compare single-storey and double-storey home extensions in Dartford - costs, planning requirements, space gains, and return on investment.
Read GuideWhat Our Clients Say
Real reviews from our satisfied customers.
"Buildaway recently finished a two week job completely renovating my bathroom and part renovation of the downstairs toilet. Cormac and his team did an incredible job. The quality of the work, their high standards, and their professionalism, along with effective and proactive communication made a refreshing change from the builders I have used in the past. Even when we changed our minds and ideas during the job Cormac’s patience and support emphasised that he wanted to make sure that the finished product was exactly what we wanted. From ordering products, to suggestions and ideas Cormac was helpful and a pleasure to work with. I would without question use Buildaway again for other work and would have no hesitation in recommending them to friends and family."
Michael Marks
"Cormac and his team were excellent from start to finish. Communication was clear and consistent both before and throughout the project, which made the whole process feel well managed. Cormac was really responsive on any questions I had and always contactable. Cormac provided really helpful advice on products and design, and clearly understood the look I was aiming for. That made a big difference and really helped me make decisions. The quality of the finish is excellent, which was one of my top priorities. The team took real care to get everything right, and Mo in particular has a fantastic eye for detail. They were also very professional day to day - always tidy, and cleaned up really thoroughly when taking away all rubbish at the end. They stuck to the agreed timelines, and pricing was transparent throughout, with clear communication on any issues as they arose. Overall, I’m really pleased with the result and felt I could trust them throughout. I wouldn’t hesitate to recommend them."
Sean Kelleher
"We’ve had a genuinely fantastic experience with Buildaway. Cormac was ultra responsive and excellent at communicating with us throughout our project. The quality of the work was excellent - so much so, that we extended our project by adding a range of other building renovations to our original ask, each completed with care and precision. Cormac and his team clearly take a lot of pride in the service they offer - from a really helpful initial visit and quotation, to the high quality work delivered - they even thoroughly cleaned all our rooms and touched up any marks. We would highly recommend them to anyone considering getting work done. Friendly, reliable and also competitive. Thanks for all your help."
Kiran Collier
"It was an absolute pleasure working with Cormac and the Buildaway team. Greg is an absolute star. Cormac’s communication and advice was excellent, and the organisation and sourcing of additional materials was brilliant. A truly great team, I would thoroughly recommend Buildaway if you are after a stress free and top quality renovation."
Sim Lewis
"It was a pleasure working with the Buildaway team to reimagine a tired old bathroom into the most attractive room in the house in just two weeks. Cormac's enthusiasm, communication, and project management are top-notch - he went above and beyond on more than one occasion. Greg's attention to detail and dedication elevated both the experience and the result - he certainly knows his way around a tile. In addition to the bathroom refit, Cormac replaced all the plastic switches, sockets and pull-cords in the house with brushed brass. Highly recommended and will certainly work with the Buildaway team again."
Kane Dempsey
"We had an excellent experience working with Buildaway. Cormac was incredibly easy to work with, and gave helpful advice. The finished job was neat, professional and completed efficiently. We'd definitely recommend and would use them again!"
Roisin Lawrence
Frequently Asked Questions
Your questions about home extensions in Dartford, answered.
How much does a home extension cost in Dartford?
Home extension cost in Dartford typically ranges from £38,000 to £95,000+. A single-storey rear extension (3m x 4m) costs £38,000–£55,000, larger single-storey extensions run £55,000–£75,000, side returns £28,000–£48,000, and double-storey extensions £75,000–£95,000+. Costs vary based on groundworks, finishes, and structural requirements. Buildaway provides full itemised home extension cost Dartford breakdowns before work begins.
How does home extension cost in Dartford compare to the UK average?
Home extension cost in Dartford sits broadly in line with the UK national average, making it one of the more accessible locations for home extensions in the South East. A single-storey rear extension averaging £35,000–£50,000 nationally aligns closely with Dartford's £38,000–£55,000 range. Buildaway offers transparent, no-hidden-fee estimates throughout.
How long does a home extension in Dartford take?
Most home extensions in Dartford complete within 12 to 18 weeks. Single-storey rear extensions take 10–14 weeks, side returns 10–12 weeks, and double-storey extensions 14–18 weeks. Planning permission and party wall agreements may add further lead time. Buildaway sets realistic programme dates from the start and communicates clearly throughout.
What home extension types does Buildaway offer in Dartford?
Buildaway offers single-storey rear extensions, side return extensions, double-storey additions, wrap-around extensions, and garage conversions across Dartford. Our home extension specialists assess your property's footprint, boundaries, and local planning conditions before recommending the right solution and developing tailored home extension plans in Dartford.
How does home extension planning in Dartford work with Buildaway?
We start with a free site survey covering structure, boundaries, drainage, and planning requirements specific to Dartford. We discuss your home extension ideas and work through costs for your property. Buildaway then handles all architectural drawings, structural calculations, and submissions to Dartford Borough Council - through to Building Control completion certificates.
Does Buildaway manage both design and construction for home extensions in Dartford?
Yes - our in-house team of architects, structural engineers, and tradespeople handles everything: planning applications, party wall agreements, Building Control submissions, and all construction trades. As a fully integrated home extension company in Dartford, you have one point of contact from first consultation to final handover.
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We Serve Dartford and Surrounding Areas
Find us in the heart of Dartford. We are proud to serve our local community.
Nearby Areas We Serve
Below are some of the local areas where you can find Buildaway transforming homes.
Ready to Transform Your Extension in Dartford?
We’ve transformed extensions in homes, apartments, and developments across Dartford, always delivering stylish, durable results built to last.