Home Extension Builders in Dulwich
Trusted home extension specialists in Dulwich (SE21, SE22) offering expert design, planning, and full construction - all delivered by Buildaway.
Your Local Home Extension
Specialists in
Dulwich
Dulwich stands out as one of South East London's most architecturally distinguished
neighbourhoods, and Buildaway brings proven experience delivering home extensions across SE21
and SE22. The area is defined by substantial Victorian and Edwardian detached and semi-detached
properties around Dulwich Village and College Road, elegant period terraces throughout East
Dulwich and Herne Hill, and characterful homes bordering Dulwich Park and the Dulwich Estate
conservation area. Our home extension specialists in Dulwich are well-versed in the specific
planning sensitivities, estate covenants, and heritage requirements that apply to properties
across this part of the borough.
Our entire process is managed in-house with no key trades contracted externally - covering home
extension planning in Dulwich, architectural design, structural engineering, planning
applications, Building Control approvals, party wall agreements, groundworks, brickwork,
roofing, and complete internal finishing. Whether you're exploring home extension ideas suited
to a large Edwardian semi, assessing home extension cost in Dulwich, or determining how much
does a home extension cost for a property within the Dulwich Estate, our home extension company
in Dulwich provides precise, obligation-free guidance and transparent pricing at every
step.
From carefully considered single-storey rear extensions and side return projects to ambitious
double-storey and wrap-around home extensions in Dulwich, Buildaway crafts home extension plans
that respect the area's architectural character while genuinely improving how your home
functions day to day. As a trusted home extension specialist in Dulwich, we handle the process
end to end - from initial feasibility and heritage assessment through to Building Control
completion - ensuring every detail meets both regulatory requirements and the high standards
Dulwich properties deserve.
Our Home Extension Packages in Dulwich
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 Dulwich Homeowners Choose Buildaway
Local teams with detailed knowledge of SE21, Dulwich Village, and surrounding prime locations
Based in your area with local expertise and reputation.
Bespoke extension designs for period townhomes, detached homes, and prestigious 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 ensuring minimal disruption to your home
Meticulous craftsmanship in every aspect of your extension.
Trusted reputation built working near Dulwich College, Dulwich Park, and Lordship Lane
Professional consultation and detailed quotes at no cost.
Our Home Extension Services in Dulwich
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 Dulwich and surrounding areas, helping customers plan renovations with clarity before starting work.
House Extension Costs in Dulwich 2025 - The Complete Homeowner's Guide
A complete breakdown of home extension costs in Dulwich. Understand labour, materials, and budgeting for your project.
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Do I Need Planning Permission for a Home Extension in Dulwich?
Expert insights into planning permission and building regulations for home extensions in Dulwich.
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Single-Storey vs Double-Storey Extensions in Dulwich 2026: Cost, Space, and ROI
Compare single-storey and double-storey home extensions in Dulwich - costs, planning requirements, space gains, and return on investment.
Read GuideWhat Our Clients Say
Real reviews from our satisfied customers.
"I wanted a bathroom refurbishment done and after meeting with several tradesmen decided to go with Buildaway Construction Ltd. From my first contact with Cormac, I was in good hands. His team turned my vision into reality, communicating with me every step of…"
Jackie Brown
"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…"
Kiran Collier
"A great transformation of my bathroom into something modern and sleek. Cormac was professional to work with from the start and was very helpful in taking my ideas and sourcing products to fit the space and look aesthetically pleasing. I felt confident in…"
Vera Jajechnyk
"Exceptional Bathroom Refurbishment and More! I was recommended Buildaway by a colleague as I was impressed by the work they had done for my colleague. From the moment I contacted Cormac, I knew I was in good hands. He was incredibly friendly and accommodating…"
Nana A.
"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…"
Sean Kelleher
"I had a complete refurbishment of my bathroom by the Buildaway team recently. I received an excellent service from the outset with a very high standard of the completed work. Cormac was very responsive to my wish for a traditional period bathroom and helped…"
Philomena Mulcahy
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Frequently Asked Questions
Your questions about home extensions in Dulwich, answered.
How much does a home extension cost in Dulwich?
Home extension cost in Dulwich typically ranges from £52,000 to £125,000+. A single-storey rear extension (3m x 4m) costs £52,000–£72,000, larger single-storey extensions run £72,000–£92,000, side returns £42,000–£62,000, and double-storey extensions £92,000–£125,000+. Estate covenants and conservation area requirements can affect costs further. Buildaway provides full itemised home extension cost Dulwich breakdowns before work begins.
How does home extension cost in Dulwich compare to the UK average?
Home extension cost in Dulwich sits 25–35% above the UK national average, reflecting South East London labour rates, premium finishes expected in the area, and the additional planning considerations tied to the Dulwich Estate and conservation zones. A single-storey rear extension averaging £35,000–£50,000 nationally sits at £52,000–£72,000 in Dulwich. Buildaway offers fully transparent, no-hidden-fee estimates throughout.
How long does a home extension in Dulwich take?
Most home extensions in Dulwich complete within 14 to 22 weeks. Single-storey rear extensions take 12–14 weeks, side returns 10–12 weeks, and double-storey extensions 16–22 weeks. Estate consent applications and conservation area approvals - both relevant across much of Dulwich - may extend lead times beyond standard planning timelines. Buildaway prepares realistic schedules from the outset and maintains clear communication throughout.
What home extension types does Buildaway offer in Dulwich?
Buildaway offers single-storey rear extensions, side return extensions, double-storey additions, wrap-around extensions, and garage conversions across Dulwich. Our home extension specialists assess your property's layout, estate covenant status, and Southwark planning conditions before recommending the most suitable approach and producing bespoke home extension plans in Dulwich.
How does home extension planning in Dulwich work with Buildaway?
We begin with a free site survey covering your property's structure, boundaries, drainage, estate covenant requirements, and local planning conditions. We discuss your home extension ideas and work through realistic costs for your property. Buildaway then prepares full architectural drawings, structural calculations, and manages all submissions to Southwark Council - through to Building Control completion certificates.
Does Buildaway manage both design and construction for home extensions in Dulwich?
Yes - our in-house team of architects, structural engineers, and tradespeople handles everything: planning applications, estate consent, party wall agreements, Building Control submissions, and all construction trades. As a fully integrated home extension company in Dulwich, you deal with one dedicated team and a single point of contact from initial consultation right through to final handover.
We Serve Dulwich and Surrounding Areas
Find us serving Dulwich and the wider SE21 and SE22 area.
Nearby Areas We Serve
Below are some of the local areas where you can find Buildaway transforming homes.
Ready to Transform Your Extension in Dulwich?
We’ve transformed extensions in period homes, luxury properties, and prestigious apartments across Dulwich, always delivering stylish, flawless results built to last.