Home Extension Builders in Swanley
Swanley home extension builders covering BR8 - design, structural work, and construction, delivered end to end by Buildaway.
Your Local Home Extension
Specialists in Swanley
Buildaway builds extensions across Swanley and the BR8 area, working on the postwar semis and detached houses alongside newer estate developments and older village cottages along London Road and High Street, and on the larger plots running toward Swanley Square. Swanley Park and Crockenhill are familiar territory.
Glazing lead times and steel fabrication set the real programme on a BR8 extension, not the brickwork. Buildaway separates the design and consent period from the build period on the programme so the timeline you are given is the one that happens. Recent extension projects in Swanley have taken in London Road, Station Road and the streets around Swanley Station, all within the BR8 coverage area.
Buildaway combines careful design with genuine workmanship on every Swanley extension. From BR8 terraces to detached family homes, we deliver additions that feel part of the original house, backed by clear communication throughout the build.
Our Home Extension Packages in Swanley
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 Swanley Homeowners Choose Buildaway
Local teams trusted across Swanley, Hextable, Crockenhill, and Kent commuter areas
Based in your area with local expertise and reputation.
Bespoke extension designs for detached homes, modern developments, 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 for a seamless, stress-free experience
Meticulous craftsmanship in every aspect of your extension.
Completed projects near Swanley High Street, Hextable Gardens, and BR8 postcodes
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 Clients Say
Real reviews from our satisfied customers.
“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 ... Friendly, reliable and also competitive.”
Kiran Collier
Verified Google review
“After meeting with Cormac, we were confident that he understood our requirements and could achieve the design we proposed. He gave a detailed and competitively priced quote ... He communicates well, and works with you, offering advice and suggestions. We now have a fantastic new bathroom.”
Garry Knight
Verified Google review
“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 ... They were reliable and always on time to arrive.”
Vera Jajechnyk
Verified Google review
“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 ... I would thoroughly recommend Buildaway.”
Sim Lewis
Verified Google review
“Cormac & his team were brilliant throughout our bathroom renovation project. From scoping to completion, Cormac was always very responsive ... His team worked extremely hard and a big shoutout to Greg for his attention to detail! We couldn't be happier with the results.”
Georgina Ehmcke
Verified Google review
“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.”
Jackie Brown
Verified Google review
Frequently Asked Questions
Your questions about home extensions in Swanley, answered.
Do I need planning permission for an extension in Swanley?
Many single-storey rear extensions fall under permitted development, but that changes inside Kent Green Belt controls and Sevenoaks District permitted development limits, where allowances are materially tighter. Buildaway establishes which category your BR8 property falls into before drawing anything.
What is a build-over agreement and will I need one?
If the extension crosses a public sewer you need written consent from the water authority before building over it. It is common in Swanley because of how rear drainage runs. The application takes several weeks, so Buildaway starts it at design stage rather than letting it delay the build.
How long does a rear extension take to build?
A single-storey rear extension is generally ten to fourteen weeks on site once foundations start, depending on glazing lead times. Double-storey work runs longer. Buildaway separates the design and consent period from the build period on the programme so expectations are realistic.
Do you handle drawings and building control?
Yes. Buildaway coordinates structural calculations, the building control application and inspections, and manages the party wall process where a neighbouring wall is affected, which is frequent on Swanley semi-detached properties.
Will an extension affect my neighbour?
On any semi-detached or terraced Swanley property the Party Wall Act applies and notice must be served. Buildaway handles the notices and statutory periods, and factors them into the start date rather than discovering them mid-project.
Get Your Free Quote
Tell us about your project and we'll get back to you within 24 hours.
We Serve Swanley and Surrounding Areas
Based locally and working across Swanley and the neighbouring BR8 streets every week.
Nearby Areas We Serve
Below are some of the local areas where you can find Buildaway transforming homes.
Ready to Transform Your Extension in Swanley?
Buildaway combines expert craftsmanship with stylish design - enhancing property value across Swanley and Kent’s thriving property market.