Dormer, hip to gable and mansard loft conversions in Ealing. Trusted, professional, 30+ years' hands-on experience.
GS Renovation builds loft conversions across the borough of Ealing, from the Edwardian villas around Walpole Park and Ealing Common to the Victorian terraces of W3 and the 1930s semis out towards Hanwell, Southall and Greenford. The right conversion depends entirely on which of those roofs you have. We survey first and build to the engineer's design.

Ealing is not one housing stock, so there is no single answer. A W3 or W13 terrace with a rear closet wing suits an L-shaped dormer, wrapping over the back addition for a bedroom and en suite. A hipped 1930s semi in UB1 or UB6 wants hip to gable with a rear dormer behind it. An Edwardian villa near Ealing Common may already have the ridge height for a simple rooflight scheme that adds no volume and leaves the roof shape alone.
Whichever route applies, the survey starts the same way, with a tape from the ceiling joists to the underside of the ridge. Roughly 2.2m to 2.4m of existing height is the threshold for a conversion that does not require lowering the ceilings below or lifting the roof. We also look at the purlins, the chimney stacks passing through the space and where a stair can land, because those three things usually decide the layout before anyone draws a plan.
The volume allowances are 40 cubic metres for a terraced house and 50 for a semi-detached or detached one, subject to conditions on materials, no projection forward of the roof plane, no balconies and obscure glazing to side windows. Ealing has a large number of conservation areas and Article 4 directions, which remove those rights entirely, so a scheme that is permitted development on one street can need a full application to Ealing Council on the next. We check the designation for your address.
Building control approval is separate and always applies. The inspector wants to see engineer-sized floor joists carried on steel beams bearing on padstones, a stair meeting Part K, a protected route with fire doors and interlinked alarms under Part B, and the insulation and ventilation build-up needed for Part L. Where steels bear into the party wall, which is nearly every terrace and semi in the borough, notice must be served by you as building owner before work starts.
Ealing homeowners choose GS Renovation because we start by identifying which of the borough's very different roof types you actually have, then build accordingly. One team coordinates the structural engineer, prepares your party wall detail, manages Ealing Council building control and keeps the house dry and secure while the roof is open. Free no-obligation quotations, fully insured, Companies House no. 14611254.
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much trouble. George it was a pleasure having you in our home! thank you for all your hard work…
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
Excellent service. George's knowledge and skills are the best in the market. He knows what he is doing, does really high quality work, gives good advice on how to setup worktops, bathrooms, what type of panels and materials to use and can…
FAQ
We price loft conversion once, properly: a real survey at W3, a written scope, and an itemised quotation reflecting how Ealing houses are actually built rather than an average taken from somewhere else. As a rough guide, loft conversion in London runs roughly £30,000 to £45,000 for a rooflight scheme, £45,000 to £65,000 for a rear dormer, £55,000 to £80,000 for an L-shaped dormer or a hip to gable with a dormer, and £70,000 to £100,000 or more for a mansard; an en suite adds roughly £8,000 to £15,000 (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
We do not run loft conversion across several sites at once. The team on your W3 project stays on it until the Ealing work is finished, which is what makes the programme predictable.
Where loft conversion needs structural design we appoint and coordinate the engineer, then build to their specification at W3. GS Renovation does not produce calculations itself, in Ealing or anywhere else.
In most cases the question is not permission but which route applies. A rear dormer on a Ealing house often proceeds under permitted development, while anything altering the front roof plane usually needs a full application to Ealing Council. Conservation area status or an Article 4 direction removes those rights entirely, so we confirm the position for your W3 property first.
We do. loft conversion in older Ealing properties usually means allowing for aged materials and irregular dimensions, both of which are built into the W3 programme.
It depends on the house. A Victorian terrace in W3 with a closet wing suits an L-shaped dormer, a hipped 1930s semi near Greenford or Southall suits hip to gable with a rear dormer, and a taller Edwardian villa may only need rooflights. Ealing's conservation areas and Article 4 directions can rule out dormers altogether, so we confirm the designation before recommending a scheme.
Every part of Ealing is covered. We work regularly around W3 and across Ealing, so the team carrying out loft conversion is rarely far from your address.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Ealing. Explore what else we do locally:
Same Service, Nearby Areas
We carry out loft conversion across Ealing and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for loft conversion in Ealing. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.