RCB Design & Build | A2Z Principal Contractor
Loft conversions, extensions and refurbishments across London
About RCB Design & Build | A2Z Principal Contractor
RCB Design & Build is an East London principal contractor working on residential loft conversions, house extensions, whole-house and flat refurbishments, structural alterations, HMO conversions and garage conversions. The company describes its offer as a full design-and-build package, with one team handling the project from survey to Building Regulations sign-off.
Its work includes load-bearing wall removal, steel beam installation and structural openings. On HMO projects, the team can add bathrooms, shower rooms and WCs and manage electrical and plumbing upgrades. RCB says it coordinates design and planning input, manages trades and procurement, and keeps a single point of contact through the build.
The company offers a free survey and agrees a detailed scope and fixed price in writing before work starts. It says variations require written agreement. Structural work is covered by a 25-year warranty, and the company lists Federation of Master Builders and TrustMark credentials. It works across London, including Newham, Greenwich, Bromley and Wandsworth.
Accreditations
- Federation of Master Builders
- TrustMark
Areas covered
- Newham
- Barking
- Dagenham
- Havering
- Redbridge
- Walthamstow
- Ilford
- Romford
- Stratford
- Greenwich
- Woolwich
- Eltham
Services
- Bathroom Fitters
- Bathroom Renovation
- Builders
- Electricians
- House Extensions
- Garage Conversions
- Foundations & Groundworks
- House Renovations
- House Rewiring
- Loft Conversions
- Plumbers
- Roofers
- RSJ & Structural Steel
Conversions and extensions
- Loft conversions
- House extensions
- Garage conversions
- HMO conversions
Refurbishments and structural work
- Full house and flat refurbishments
- Load-bearing wall removal
- RSJ and steel beam installation
- Structural openings
- New builds
Project delivery
- Design and build
- Planning refusal advice
- Design and planning coordination
- Building Regulations management
- Project management
What their website says about each service
- Bathroom Fitters · mainly as part of larger projects
“Adding bathrooms, shower rooms and WCs to achieve appropriate bathroom-to-room ratios.”
- Bathroom Renovation · mainly as part of larger projects
“Whole-house and flat refurbishments. Strip out, structural, M&E, plastering, joinery, kitchens, bathrooms and decoration.”
- Builders
“We deliver the full design-and-build package — not just the labour.”
- Electricians · mainly as part of larger projects
“Full electrical rewire or upgrade including consumer unit”
- House Extensions
“We deliver rear, side, wrap-around and double-storey extensions across London”
- Garage Conversions
“Integral or detached garage conversion to habitable room.”
- Foundations & Groundworks · mainly as part of larger projects
“foundations, drainage, structure, roofing, windows, insulation, first-fix M&E, plaster, second-fix, and decoration”
- House Renovations
“Whole-house and flat refurbishments. Strip out, structural, M&E, plastering, joinery, kitchens, bathrooms and decoration.”
- House Rewiring · mainly as part of larger projects
“Full electrical rewire or upgrade including consumer unit”
- Loft Conversions
“Loft conversions”
- Plumbers · mainly as part of larger projects
“We manage the full M&E works — drainage runs, cold and hot water, ventilation, and tiling.”
- Roofers · mainly as part of larger projects
“foundations, drainage, structure, roofing, windows, insulation, first-fix M&E, plaster, second-fix, and decoration”
- RSJ & Structural Steel
“Load-bearing wall removal, RSJ and steel beam installation, new structural openings.”