Loft Conversion Specialists in Belgravia
Loft conversion for Belgravia SW1X and SW1W, delivered by Buildaway with the discretion, structural care and planning diligence that listed property requires.
Your Local Loft Conversion
Specialists in Belgravia
Searching for loft conversion specialists in Belgravia (SW1X, SW1W)? Buildaway works
throughout SW1 - the townhouses of Eaton Square, Belgrave Square and Wilton
Crescent, the mews properties off Elizabeth Street and Motcomb Street, and the homes
toward Chester Square, Knightsbridge and Sloane Square.
Loft conversion in Belgravia is delivered by Buildaway with the discretion,
structural care and planning diligence that listed property requires. In SW1X and
SW1W most roofs sit within a conservation area and a great many are listed, so the
first question is never the design - it is what is actually consentable. Buildaway
establishes that, secures the freeholder position, then builds: structure, stairs,
insulation and finish on one contract.
Our Loft Conversion Packages in Belgravia
Velux Conversion
Ideal for cost-effective space addition. Includes structural survey, Velux roof windows, staircase installation, insulation to building regs, plastering, electrics and lighting, flooring, building regulation approval.
Dormer Conversion (Most Popular)
Complete loft transformation. Includes structural assessment, dormer construction, steelwork, staircase fitting, full insulation, plastering, electrics upgrade, flooring, heating, building regulation approval, waste removal.
Hip-to-Gable or Mansard Conversion
For those seeking maximum space. Includes architectural design, full structural alterations, steelwork, bespoke staircase, en-suite bathroom option, planning and building regulation handling, full project management.
Why Belgravia Homeowners Choose Buildaway
Flawless, luxury installations with minimal disruption
Based in your area with local expertise and reputation.
Bespoke loft designs for listed townhouses, mews properties, 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.
Trusted by residents across Eaton Square, Chester Square, and surrounding areas
Meticulous craftsmanship in every aspect of your loft.
Full project management for a seamless, stress-free experience
Professional consultation and detailed quotes at no cost.
What's Included in Your Loft Conversion
Every Buildaway loft conversion includes all the essentials - from structure to finish.
Dormer, L-shaped, hip-to-gable and Velux conversions
Expertly built to match your property type, maximise head height, and flood your new space with natural light.
Structural works and steel installation
All reinforcements and load-bearing elements installed to regulation, ensuring long-term strength and compliance.
New staircase installation and floor construction
Safe, stylish staircases built to code - with solid floors that integrate seamlessly with the rest of your home.
Insulation, ventilation and roofing upgrades
Energy efficiency and climate control built in - for comfort all year round.
Electrical work, plumbing and heating
All new electrics, radiators, lighting and en-suite plumbing fully managed and installed.
Rooflights, skylights and windows
Brighten the space with high-quality glazing and natural light solutions.
Latest Loft Conversion Insights
We publish detailed loft conversion guides and cost insights for homeowners across Belgravia and surrounding areas, helping customers plan projects with clarity before starting work.
Loft Conversion Costs in London 2026
What a dormer, hip-to-gable or mansard conversion really costs in London, and what drives the number.
Extension vs Loft Conversion: Which Adds More Value?
Comparing the cost, disruption and resale return of going up versus going out.
What Adds the Most Value to a London Home
Which renovations genuinely return their cost when you sell, and which ones quietly do not.
What Our Clients Say
Real reviews from our satisfied customers.
“They were also very professional day to day - always tidy, and cleaned up really thoroughly when taking away all rubbish at the end. They stuck to the agreed timelines, and pricing was transparent throughout, with clear communication on any issues as they arose. Overall, I’m really pleased with the result and felt I could trust them throughout. I wouldn’t hesitate to recommend them…”
Sean Kelleher
“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 and look aesthetically pleasing. I felt confident in working with the company as I could ask questions and I was also pleased to get suggestions and ideas…”
Vera Jajechnyk
“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
“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
“From scoping to completion, Cormac was always very responsive, answering any questions we had on product selection and helped us source the products to get the best price. His team worked extremely hard and a big shoutout to Greg for his attention to detail! We couldn’t be happier with the results and would highly recommend Buildaway for any building project in the future…”
Georgina Ehmcke
Frequently Asked Questions
Your questions about loft conversions in Belgravia, answered.
How much does a loft conversion cost in Belgravia?
As a guide, loft conversion in Belgravia (SW1X and SW1W) runs about £35,000–£45,000 for a Velux or roof-light scheme, £45,000–£55,000 for a dormer, and £65,000++ for a hip-to-gable or mansard. UK guides put dormers around £40,000–£60,000 and mansards £50,000–£80,000, with London consistently at the top of those ranges. Buildaway fixes your figure in writing after survey.
How long does a loft conversion take in Belgravia?
Allow roughly 6–10 weeks of build for a loft in Belgravia, plus lead-in for design, Building Control and party-wall notices. In SW1X and SW1W the notices are usually the long pole, not the construction. Buildaway serves them at the start so your programme is not held hostage to a neighbour's response window.
Do I need planning permission for a loft conversion in Belgravia?
It depends on your SW1X and SW1W property. Permitted development covers a good number of Belgravia rear dormers, but conservation areas around Eaton Square and Elizabeth Street and listed buildings need full Westminster City Council consent - and flats have no permitted development rights at all. Buildaway confirms what is achievable first, so we do not design a scheme that gets refused.
What types of loft conversion do you offer in Belgravia?
Buildaway delivers Velux/rooflight, rear dormer, hip-to-gable and mansard conversions across Belgravia. Which suits your SW1X and SW1W home depends on roof pitch, headroom and what Westminster City Council will accept - a mansard that works on one street near Eaton Square and Elizabeth Street may be refused on the next. Buildaway surveys before recommending.
Do Buildaway handle both design and construction for Belgravia lofts?
Both, on one contract. For Belgravia clients Buildaway handles the drawings, the structural engineering, the consents and the build itself. That matters on SW1X and SW1W lofts more than most jobs, because the design and the structure are the same conversation.
Are your loft specialists local to Belgravia?
Buildaway covers Belgravia and the wider SW1X and SW1W area year-round. Having converted lofts on this housing stock repeatedly, we know its constraints before the survey starts - and we are nearby long after handover.
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We Serve Belgravia and Surrounding Areas
Find us in the heart of Belgravia. 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 Loft in Belgravia?
We’ve worked within Belgravia’s most exclusive streets, understanding the expectations of privacy, quality, and precision required.