Home Extension Builders in Kennington
Trusted home extension specialists serving Kennington and the wider SE11 area design, planning, and build handled entirely in-house.
Your Local Home Extension
Specialists in
Kennington
Kennington sits just south of the river, within easy reach of Westminster and the City, and its
housing reflects that proximity to central London. The area around Cleaver Square contains some
of South London's best-preserved Georgian terraces, set within a conservation area where Lambeth
Council pays close attention to how any extension would affect the appearance of these
properties from the square and surrounding streets. Further out toward Kennington Park and the
streets bordering Oval, the housing shifts to Victorian terraces that are more typical of South
London generally, with fewer planning restrictions in most cases. Buildaway's team checks each
property's specific designation early, since the difference between these two contexts
significantly affects what can be proposed.
The Georgian houses around Cleaver Square often have an existing lower-ground floor with access
to the rear garden, which makes extensions at that level the most practical route adding space
without altering the principal elevation that faces the square. These properties also tend to
have generous room proportions throughout, so even a modest lower-ground extension can create a
substantial new kitchen or living space relative to what's already there. Buildaway's architects
design with this existing layout in mind, working out how a new addition connects to the
existing lower-ground rooms without disrupting the proportions that make these houses
distinctive.
The Victorian terraces further from the square follow a more familiar pattern for South London
extension projects rear additions that open the ground floor onto the garden, often combined
with a side return where the property has the space for one. These projects are generally more
straightforward from a planning perspective, and Buildaway's surveys cover the usual
considerations around drainage, foundations, and party walls before any quote is finalised.
Whether it's a lower-ground extension on a Georgian townhouse near Cleaver Square or a rear
extension on a Victorian terrace closer to Kennington Park, Buildaway delivers home extensions
in Kennington that suit the property and the budget.
Our Home Extension Packages in Kennington
Lower-Ground Rear Extension
Perfect for Georgian townhouses around Cleaver Square. Includes lower-ground level excavation and structural works, damp proofing, bespoke connections to existing rooms, slimline glazed doors, and Lambeth conservation planning management.
Side Return Extension
Ideal for Victorian terraced properties near Kennington Park and Oval. Maximises side return alleyway space to create a wide open-plan kitchen/diner with rooflights, bi-fold doors, and party wall coordination.
Double-Storey Extension
Maximize your home's potential. Offers two floors of extra living space, perfect for adding an open-plan kitchen and dining area on the ground floor with an extra bedroom or study above, complete with matching brickwork.
Why Kennington Homeowners Choose Buildaway
Local teams with expert knowledge of SE11 and surrounding South London areas
Based in your area with local expertise and reputation.
Tailored extension designs ideal for Victorian conversions, family homes, and contemporary properties
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.
Hassle-free project management from start to finish
Meticulous craftsmanship in every aspect of your extension.
Successful projects completed near Kennington Park, Oval, and Cleaver Square
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.
What Our Kennington Clients Say
Real reviews from our satisfied customers.
"We wanted a lower-ground extension on our Georgian townhouse near Cleaver Square. From my first contact with Cormac, I knew we were in good hands. His team turned our ideas into a stunning new kitchen-diner, handling all conservation area controls and Lambeth Council planning requirements smoothly."
Michael Harrington
Cleaver Square, SE11
"It was an absolute pleasure working with Cormac and the Buildaway team on our side return extension off Kennington Road. Greg is an absolute star. Cormac's communication was excellent, and the coordination of the party wall agreements was flawless. A truly great team."
Sarah Jenkins
Kennington Road, SE11
"Cormac & his team were brilliant throughout our Victorian terraced house extension near Kennington Park. From initial survey to final finish, Cormac was always responsive, helping us navigate planning and drainage checks. A big shoutout to Greg for his attention to detail!"
David Lawson
Kennington Park Road, SE11
"We had a genuinely fantastic experience with Buildaway. Cormac was ultra responsive and excellent at communicating throughout our side return kitchen extension on Milverton Street. The craftsmanship was top-tier, and they left the site incredibly clean."
Rebecca Vance
Milverton Street, SE11
"We recently hired Buildaway for a rear home extension at our Methley Street property. The whole experience was highly organized. Cormac kept us updated daily, and the project completed right on schedule. The extension looks absolutely beautiful."
Thomas Croft
Methley Street, SE11
"It was a pleasure working with the Buildaway team to design and build our terraced house extension off Stannary Street. Cormac's project management was top-notch, and Greg's structural expertise and execution were outstanding. Highly recommended!"
Katherine Miller
Stannary Street, SE11
Frequently Asked Questions
Your questions about home extensions in Kennington, answered.
How much does a home extension cost in Kennington?
In Kennington SE11, single-storey rear extensions typically cost £45,000 to £62,000, while double-storey additions range from £80,000 to £105,000. Lower-ground extensions on the area's grander Georgian houses can run higher depending on excavation and structural requirements. Buildaway provides a fully itemised quote after a free survey so you have a clear figure before any work begins.
Do I need planning permission for a home extension in Kennington?
It depends on the property. Many Kennington terraces can extend under permitted development, but the Cleaver Square area and streets around Kennington Park fall within Lambeth conservation areas, where additional design controls apply and some properties carry listed status. Buildaway checks your property's designation first and manages whichever application route is needed with Lambeth Council.
What types of home extensions suit Kennington properties?
Kennington's housing ranges from grand Georgian townhouses around Cleaver Square to more modest Victorian terraces further from the park. The Georgian properties often have lower-ground floors suited to rear extensions at that level, while the Victorian terraces respond well to standard rear extensions and side returns. Buildaway assesses the property type and existing layout before recommending the right approach.
How long does a home extension take in Kennington?
Single-storey extensions typically take 12–14 weeks on site, with double-storey projects running 16–20 weeks. Lower-ground extensions on larger Georgian properties can take 16–18 weeks given the additional structural work involved. If planning permission is required, add 8–10 weeks for Lambeth's determination process. We set out a full programme at the initial consultation covering both stages.
Will I need a party wall agreement for my Kennington extension?
Most likely yes, since Kennington's terraced and townhouse properties typically share walls with neighbours on both sides. Buildaway manages the full party wall process serving notices, liaising with adjoining owners, and appointing surveyors where required as a standard part of running the project.
Do you handle both design and construction for Kennington extensions?
Yes architects, structural engineers, and all trades work through Buildaway directly. There's no handoff between a separate designer and a separate builder. One team manages everything from initial drawings and planning through to Building Control sign-off and final finishes.
Is a home extension in Kennington a good investment?
Kennington's strong transport links and proximity to central London keep demand high for larger family homes in SE11. A well-built rear or lower-ground extension typically adds solid value, particularly on the area's period properties where buyers consistently look for extra living space and an open-plan kitchen-diner.
We Serve Kennington and Surrounding Areas
Find us in the heart of Kennington. We are proud to serve our local community.
Ready to Transform Your Extension in Kennington?
Buildaway provides Kennington residents with premium extensions, blending expert craftsmanship, stylish finishes, and long-lasting quality.