Home Extension Builders in Hammersmith
Home extension across Hammersmith W6, where Buildaway takes on design, planning, structure, services and the finished rooms as a single contract.
Your Local Home Extension
Specialists in Hammersmith
Looking for home extension builders in Hammersmith (W6)? Buildaway extends homes
throughout W6 - the terraces of Brook Green, the family houses around Ravenscourt
Park, the streets off King Street and Hammersmith Broadway, and the properties
toward Hammersmith Bridge and Barons Court.
Home extension across Hammersmith sees Buildaway take on design, planning,
structure, services and the finished rooms as a single contract. W6 schemes are
usually a rear or side-return infill on a tight urban plot, where access, party
walls and drainage all constrain the build. Buildaway resolves those before breaking
ground, then delivers groundwork, steels, glazing, services and decoration with one
accountable Hammersmith team and one agreed price.
Our Home Extension Packages in Hammersmith
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 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, riverside apartments, and modern 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.
Comprehensive project management ensuring seamless installations
Meticulous craftsmanship in every aspect of your extension.
Established reputation with successful projects near King Street, Brook Green, and Hammersmith Bridge
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 Hammersmith 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.
“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 right from the start. The very next day, he was at my property, taking measurements and discussing design options. What really impressed me was Cormac's honesty…”
Nana A.
“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
“I am extremely impressed, happy and proud of what he and his team of Archie, Ben and Danny delivered. They all went beyond and far, I am very grateful for what they have done for me. I would 100% recommend Buildaway for any building, renovation etc - an excellent team with a good rapport, team spirit and working harmoniously together. Thank you Team Buildaway…”
Betty Lwanga
“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
“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 Hammersmith, answered.
How much does a home extension cost in Hammersmith?
Extension costs in Hammersmith are driven by groundwork, structure and glazing more than floor area alone. Across W6, 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 Hammersmith?
Twelve to twenty weeks on site for Hammersmith, scheme depending. The build is the predictable part; Hammersmith & Fulham Council determination and party-wall awards are what stretch W6 projects. Buildaway handles both alongside design so the dates hold.
Do I need planning permission for an extension in Hammersmith?
Many Hammersmith single-storey rear extensions fall under permitted development, subject to depth, height and materials limits. But conservation-area designation around Brook Green and Ravenscourt Park and listed status remove those rights, making Hammersmith & Fulham Council approval essential - and flats in W6 have no permitted development rights at all. Buildaway establishes your position before design.
What types of extension do you offer in Hammersmith?
We handle single-storey, side-return, wrap-around, double-storey and basement extensions throughout Hammersmith. The right answer for your W6 property depends on drainage, boundary and Hammersmith & Fulham Council policy. Buildaway establishes those before proposing anything.
Do Buildaway handle both design and construction for Hammersmith extensions?
Both, on one contract. For Hammersmith clients Buildaway handles drawings, structural engineering, consents and construction. Splitting design from build is where W6 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 Hammersmith?
We are in Hammersmith constantly. Buildaway knows W6 property: the boundaries, the ground conditions, and how Hammersmith & Fulham 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 Hammersmith and Surrounding Areas
Find us in the heart of 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.