House Extensions and Loft Conversions in Westminster
Suddeco designs, gets approval for and builds extensions, loft conversions and renovations across Westminster. Designed, approved and built by one team.
Side return · indicative renderWhat gets approved in Westminster
Real planning decisions near you, from council records.
We check Westminster decisions from your exact address
Public planning records vary by council: for Westminster we do not hold a district-level summary yet, so we run the check against your own address instead — it uses the same council records.
Planned around the house you have
Layouts shaped by the plot
Choose a layout that suits the plot, the structure and how you live.
Old and new join properly
Drainage, utilities and structural openings planned before they become snags.
Access kept in view
Residents, deliveries and trades all need a workable route through the site.
Start from a layout
What we build here
Nearby boroughs
What to know before building in Westminster
Georgian and Victorian townhouses, mews houses and mansion flats — a large share of them listed. Townhouse and mews refurbishments, listed interiors, kitchen and bathroom renovations, and flat fit-outs.
Most of Westminster is inside conservation areas and many homes are listed, so listed building consent and, on the big estates, landlord consent come first. We check your exact address with Westminster City Council records before we draw anything, and price the whole job — design, approvals and build — in one estimate.
A construction company near you in Westminster
Looking for a construction company near you in Westminster? Suddeco designs, gets approval for and builds extensions, lofts, renovations and new builds in Westminster — building company, general contractor and design and build firm in one team.
Westminster FAQs
Are you a construction company near me in Westminster?
Yes. Suddeco works across Westminster and every other London borough. We survey the site, draw and approve the design, and build it with our own team. Call 020 3633 8086 or book a free survey.
What construction work do you do in Westminster?
Extensions, lofts, conversions, renovations and new builds in Westminster, with the drawings and approvals.
What should we send for a Westminster extension or loft?
Plans or photos, the property address, notes on access and anything awkward such as drainage or shared walls. Or start with just your address and we draw the existing house.
Is my street in a conservation area?
We check it when you enter your address, alongside permitted development and nearby decisions.
Do you build it yourselves?
Yes. Suddeco designs, handles planning and delivers the build with its own project management.