Dormer, hip to gable and mansard loft conversions in Barking and Dagenham. Trusted, professional, 30+ years' hands-on experience.
GS Renovation builds loft conversions across Barking and Dagenham, from the Becontree Estate semis in RM8 and RM9 to the interwar streets around Barking Park and out towards Dagenham. The 1930s hipped roof here suits a hip to gable with a rear dormer, and we handle the steelwork, the party wall notices and building control as one job.

Most houses in RM8, RM9 and RM10 are interwar semis with a hipped roof sloping in over the side elevation, and that hip is what limits the usable width upstairs. Building it out to a flat gable wall, then adding a rear dormer behind it, is the change that turns a cramped void into two rooms or one bedroom with an en suite. The first measurement we take is ridge height, because you need roughly 2.2m to 2.4m of existing headroom for the new floor and a compliant stair to work.
Becontree houses were built to a standard pattern, so the roof timbers, the chimney position and the old cold water tank are broadly predictable, which makes surveying quick. The tank almost always has to go, and most owners switch to a combi boiler or an unvented cylinder at the same time. New floor joists are sized by a structural engineer and sit on steel beams spanning to the party wall and the new gable, clear of the original ceiling joists, which were never designed to carry a floor.
A hip to gable with a rear dormer on a semi often falls inside the permitted development volume allowance, commonly cited as 50 cubic metres for a semi-detached or detached house and 40 for a terrace, provided nothing projects forward of the roof plane, materials match and any side window is obscure glazed. That allowance is removed in conservation areas and by Article 4 directions, and parts of the borough are covered, so we advise a check with Barking and Dagenham Council before you commit to a design.
Many former council houses in the borough also carry covenants from the original sale, which is a separate matter from planning and worth reading early. Whichever route applies, building regulations always do: a protected stair route with fire doors and interlinked alarms under Part B, stair rise and going under Part K, insulation and ventilation under Part L, and inspections booked at the right stages. Where a gable or a steel meets the wall shared with next door, notice is served under the Party Wall etc. Act 1996.
Barking and Dagenham owners come to GS Renovation because the same team that installs the steel also manages the engineer, the building control inspections and the party wall paperwork. Founder Abdelaaziz Saaid brings 30+ years of hands-on structural experience, the company is fully insured and building control compliant, and quotations are free and no-obligation. Companies House no. 14611254.
I had a bathroom refit which I was very pleased with and I then went on to get my kitchen refitted as I was so happy with the way he worked. Even though I made a few changes to my original idea nothing bothered him and he worked his magic…
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and replacing with new. Saiid was very helpful during the planning stage giving useful advice…
Really great job done in our bathroom to replace the shower head in the bathtub, and install a shower screen and caddy. We are very happy with the result. The job was done excellently. Communication was really great helping us find what we…
FAQ
What you pay for loft conversion reflects the condition of the building as much as the work. Properties around IG11 vary, so we survey and price the Barking and Dagenham job on what is genuinely there, not on a Barking and Dagenham average. 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 IG11 project stays on it until the Barking and Dagenham work is finished, which is what makes the programme predictable.
GS Renovation is a contractor, not a middleman, so loft conversion is delivered by one accountable team rather than a chain of subcontractors, whether the job is in Barking and Dagenham or over in Havering.
Usually yes, in a terrace or semi. Loft steels normally bear into a wall shared with a neighbour, which makes the work notifiable under the Party Wall etc. Act 1996. The duty to serve sits with you as building owner, so we prepare the notices for your Barking and Dagenham property and you serve them, well before steel is ordered.
We work on them constantly. loft conversion at a IG11 address needs the structure confirmed by an engineer before design, and GS Renovation coordinates that as standard across Barking and Dagenham.
Often not. A hip to gable with a rear dormer on a semi frequently sits inside permitted development, which allows up to 50 cubic metres of added volume subject to conditions on materials, side windows and not building forward of the roof plane. But permitted development is withdrawn in conservation areas and by Article 4 directions, so we check your specific address with Barking and Dagenham Council rather than assume.
Yes, Barking and Dagenham is well inside our usual patch for loft conversion, and so is most of Barking and Dagenham. There is no travel surcharge for a IG11 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 Barking and Dagenham. Explore what else we do locally:
Same Service, Nearby Areas
We carry out loft conversion across Barking and Dagenham and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for loft conversion in Barking and Dagenham. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.