Home Extension Builders in Dulwich Village
Home extension for Dulwich Village SE21 period property, where Buildaway designs sympathetically to the existing house while delivering modern living space.
Your Local Home Extension
Specialists in Dulwich Village
Need home extension builders in Dulwich Village (SE21)? Buildaway extends homes
throughout SE21 - the period houses along Court Lane, Calton Avenue and Alleyn Park,
the properties near Dulwich Park, Dulwich Picture Gallery and Dulwich College, and
the streets toward Sydenham Hill.
Home extension for Dulwich Village period property sees Buildaway design
sympathetically to the existing house while delivering modern living space. Much of
SE21 sits under the Dulwich Estate scheme of management as well as planning control,
so consent here has two gatekeepers rather than one. Buildaway handles both, then
builds - groundwork, structure, glazing, services and finish on a single Dulwich
Village contract with one team accountable throughout.
Our Home Extension Packages in Dulwich Village
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 Village Homeowners Choose Buildaway
Local teams with detailed knowledge of Dulwich Village, SE21, and surrounding prime locations
Based in your area with local expertise and reputation.
Bespoke extension designs for period homes, detached properties, and prestigious townhomes
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 property
Meticulous craftsmanship in every aspect of your extension.
Trusted reputation built working near Dulwich Park, College Road, and North Dulwich Station
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 Dulwich Village and surrounding areas, helping customers plan projects with clarity before starting work.
Home Extensions London: The Complete 2026 Guide
Everything from feasibility and planning to structure, cost and programme for a London extension.
Single-Storey Rear Extension Cost London
A realistic cost breakdown for the most common extension in London, with the variables that move it.
Planning Permission for Home Extensions
When you need permission, when permitted development covers you, and how to avoid a refusal.
What Our Clients Say
Real reviews from our satisfied customers.
“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
“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…”
Kiran Collier
“From my first contact with Cormac, I was in good hands. His team turned my vision into reality, communicating with me every step of the way and offered helpful suggestions which turned my bathroom into an oasis. I could not be happier and would highly recommend their services. Thank you to the team of Buildaway Construction Ltd…”
Jackie Brown
“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
“The team turned up when they said they would and kept the house tidy each day, which made a big difference while we were living in the property during the works. The quality of the finish is excellent. The bathroom looks fantastic and the bedrooms feel completely refreshed. We wouldn’t hesitate to recommend Cormac and the Buildaway team…”
Helen Sivyer
“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…”
Michael Marks
Frequently Asked Questions
Your questions about home extensions in Dulwich Village, answered.
How much does a home extension cost in Dulwich Village?
Extension costs in Dulwich Village are driven by groundwork, structure and glazing more than floor area alone. Across SE21, expect about £40,000–£60,000 for a single-storey rear, £60,000–£80,000 for wrap-around, £100,000+ for double-storey. Buildaway itemises groundwork, steels, services and finishes separately so the trade-offs are visible.
How long does a home extension take in Dulwich Village?
Most Buildaway extensions around Court Lane and Calton Avenue take 12–20 weeks once on site - groundwork, structure, envelope, then services and finishes. Weather affects the early stages more than the late ones. We give Dulwich Village clients a dated programme with the quote, including the consent lead-in.
Do I need planning permission for an extension in Dulwich Village?
Sometimes yes, sometimes no. In Dulwich Village, permitted development can cover a modest rear extension, but Southwark Council takes a close view on anything altering the street elevation, and heritage designation around Court Lane and Calton Avenue removes the easy route. Buildaway checks planning, party-wall and freeholder position together.
What types of extension do you offer in Dulwich Village?
Buildaway builds rear, side-return, wrap-around, double-storey and lower-ground extensions across Dulwich Village. Which suits your SE21 home depends on the plot, the boundary and what Southwark Council will accept. Around Court Lane and Calton Avenue the side-return infill is often the highest-value option. Buildaway surveys before recommending.
Do Buildaway handle both design and construction for Dulwich Village extensions?
Both, on one contract. For Dulwich Village clients Buildaway handles drawings, structural engineering, consents and construction. Splitting design from build is where SE21 extension projects most often lose money, because the gap between them is nobody's problem until it is yours.
Are your extension specialists local to Dulwich Village?
We are in Dulwich Village constantly. Buildaway knows SE21 property: the boundaries, the ground conditions, and how Southwark Council treats rear additions here. That experience makes our feasibility advice reliable rather than optimistic.
Get Your Free Quote
Tell us about your project and we'll get back to you within 24 hours.
We Serve Dulwich Village and Surrounding Areas
Find us in the heart of Dulwich Village. 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 Dulwich Village?
We’ve transformed extensions in luxury homes and heritage properties throughout Dulwich Village, always delivering flawless results built to last.