Home Extension Builders in Hammersmith
Trusted home extension specialists working across Hammersmith and the wider W6 area design, planning, and build handled entirely in-house.
Your Local Home Extension
Specialists in
Hammersmith
Hammersmith is a mixed and densely built West London neighbourhood where Victorian and Edwardian
terraces sit alongside 1930s semis and post-war housing across W6. The residential streets
running off King Street, Ravenscourt Park, and Brackenbury Village contain some of the most
sought-after family homes in the borough, many with real scope for rear or side extensions that
would significantly improve the ground-floor layout. Hammersmith and Fulham Council's planning
policies are more permissive than Westminster's in many respects, but the borough still has
conservation areas including Brackenbury Village and streets around Ravenscourt Park where
standard permitted development rights don't apply. Buildaway's team knows this borough well and
works within its specific planning framework from the outset.
Side return extensions are particularly common in Hammersmith's Victorian terraces, where the
narrow strip of unused space running along the kitchen wall can be brought in to create a wider,
more functional ground floor. These projects suit the typical W6 layout well, but they involve
working tight to the boundary and almost always require party wall agreements with the adjoining
neighbour. Drainage diversions and existing outbuildings along the rear return add further
complexity that needs assessing before any design is finalised. Buildaway's surveyors look at
all of these factors during the initial site visit, so the quote you receive reflects what the
project actually involves rather than an optimistic number revised upward once work
starts.
Hammersmith homeowners also need to factor in the borough's proximity to the Thames flood plain.
Properties south of King Street toward the riverfront can fall within flood risk zones that
affect foundation design, floor levels, and drainage strategy all of which feed into both the
planning application and the structural specification. Further north in W6, toward Shepherd's
Bush Road and the borough boundary, the constraints differ but each property still needs
individual assessment. Whether it's a rear kitchen extension on a Brackenbury Village terrace or
a double-storey addition on a larger semi near the Chiswick border, Buildaway delivers home
extensions in Hammersmith that are properly planned, structurally sound, and built to a standard
that lasts.
Our Home Extension Packages in Hammersmith
Single-Storey Rear Extension
Ideal for expanding your kitchen or living space. Includes structural survey, architectural drawings, groundworks and foundations, brickwork and roofing, bi-fold or sliding doors, heating installation, and building regulation approval.
Side Return Extension (Most Popular)
Complete ground-floor layout transformation. Includes structural assessment, full groundworks, steelwork, matching materials, glazing and rooflights, full insulation, electrics upgrade, flooring, and party wall notice handling.
Double-Storey Extension
For maximum space addition across two floors. Includes architectural design, full structural alterations, steelwork and foundations, bespoke staircase, multiple room creation, bathroom or en-suite option, and planning handling.
Why Hammersmith Homeowners Choose Buildaway
Local teams with extensive knowledge of W6 and surrounding West London areas
Based in your area with local expertise and reputation.
Bespoke extension designs ideal for period homes, semis, and modern terraces
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.
Comprehensive project management ensuring seamless installations
Meticulous craftsmanship in every aspect of your extension.
Established reputation with successful projects near Ravenscourt Park and Brackenbury Village
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 Hammersmith Clients Say
Real reviews from our satisfied customers.
"I wanted a side return and rear extension done on our Brackenbury Village terraced property and after meeting with several builders, I decided to go with Buildaway. 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 handled the conservation planning applications smoothly. I could not be happier."
Jackie Brown
"It was an absolute pleasure working with Cormac and the Buildaway team on our Ravenscourt Park Victorian terrace extension. Greg is an absolute star. Cormac’s communication and advice was excellent, and the coordination of party wall agreements with our neighbours was flawless. A truly great team."
Sim Lewis
"Cormac & his team were brilliant throughout our Hammersmith W6 home extension project. From scoping to completion, Cormac was always responsive, helping us navigate the local planning rules and checking the flood zone foundation requirements. His team worked extremely hard and a big shoutout to Greg for his attention to detail!"
Georgina Ehmcke
"We’ve had a genuinely fantastic experience with Buildaway. Cormac was ultra responsive and excellent at communicating with us throughout our side return extension near King Street. The quality of the work was excellent - they even thoroughly cleaned all our rooms and touched up any marks. Friendly, reliable and competitive."
Kiran Collier
"We recently used Buildaway for a double-storey extension on our semi-detached house near the Chiswick border. From start to finish the experience was smooth and well organised. Cormac was easy to deal with, communication was clear and everything ran to the agreed timelines. The extension looks fantastic and the space feels completely refreshed."
Helen Sivyer
"It was a pleasure working with the Buildaway team to design and build our W6 Victorian terrace kitchen extension. Cormac's enthusiasm and project management are top-notch. Greg's attention to detail and dedication elevated both the experience and the result. Highly recommended and will certainly work with them again."
Kane Dempsey
Frequently Asked Questions
Your questions about home extensions in Hammersmith, answered.
How much does a home extension cost in Hammersmith?
In Hammersmith W6, single-storey rear and side return extensions typically run from £45,000 to £65,000, with double-storey additions starting around £85,000. Exact costs depend on the property type, groundworks complexity, drainage requirements, and finish level. Buildaway provides a fully itemised quote after a free site visit so you have a clear figure before any work is committed to.
Do I need planning permission for a home extension in Hammersmith?
Many Hammersmith properties can extend under permitted development without a full application, but conservation areas including Brackenbury Village and streets around Ravenscourt Park remove those rights. Hammersmith and Fulham Council also has its own local policies that can affect what's achievable. Buildaway checks your property's specific planning status first and manages whichever application route applies.
What types of home extensions do you build in Hammersmith?
We carry out single-storey rear extensions, side returns, double-storey additions, wrap-around extensions, and garage conversions across Hammersmith. Side return extensions are particularly well-suited to the Victorian terraces throughout W6, where the narrow strip beside the kitchen can unlock a significantly better ground-floor layout. We assess the plot and structure before recommending the right approach for your property.
How long does a home extension take in Hammersmith?
Single-storey extensions typically take 12–14 weeks on site once groundworks begin. Double-storey projects run 16–20 weeks. If a planning application is needed, add 8–12 weeks for Hammersmith and Fulham Council's determination process. We give you a realistic programme at the start including the planning stage so the overall timeline is clear from day one.
Does Buildaway handle party wall agreements in Hammersmith?
Yes. Side return and rear extensions on Hammersmith's terraced and semi-detached properties almost always trigger the Party Wall Act, since they involve working close to or on a shared boundary. Buildaway manages the notice process as a standard part of the project serving notices, coordinating with adjoining owners, and appointing surveyors where needed. It's not something you're left to handle separately.
Do you manage both design and construction for Hammersmith extensions?
Yes architects, structural engineers, and all trades work through Buildaway directly. There's no handoff between a separate designer and a separate builder, which is where most projects lose time and run into miscommunication. One team handles everything from the initial drawings and planning submission through to Building Control sign-off.
How do flood risk zones affect home extensions in Hammersmith?
Properties south of King Street toward the Thames riverfront can fall within flood risk zones that influence foundation design, floor levels, and drainage strategy. This needs to be factored into both the planning application and the structural specification. Buildaway's surveyors assess flood risk designation during the initial site visit and adjust the design and build approach accordingly it's not something that gets picked up halfway through the project.
We Serve Hammersmith and Surrounding Areas
Find us in Hammersmith. 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 Hammersmith?
Buildaway consistently provides Hammersmith homeowners with premium-quality extension installations that enhance comfort, style, and property value.