House Extensions and Loft Conversions in City of London
Suddeco designs, gets approval for and builds extensions, loft conversions and renovations across City of London. Designed, approved and built by one team.
Side return · indicative renderWhat gets approved in City of London
Real planning decisions near you, from council records.
We check City of London decisions from your exact address
Public planning records vary by council: for City of London 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 City of London
Homes in the Square Mile are mostly flats, from the Grade II listed Barbican Estate to converted warehouses and new-build apartments. Flat refurbishments, kitchen and bathroom replacements, layout changes and full fit-outs — work planned around building rules, lifts and access times.
Many buildings are listed or inside conservation areas, so listed building consent and the building owner’s licence are often needed before any internal change. We check your exact address with the City of London Corporation records before we draw anything, and price the whole job — design, approvals and build — in one estimate.
Where we work in City of London
the Barbican, Golden Lane, Smithfield, Clerkenwell edges and the riverside.
Postcodes: EC1, EC2, EC3 and EC4
A construction company near you in City of London
Looking for a construction company near you in City of London? Suddeco designs, gets approval for and builds extensions, lofts, renovations and new builds in City of London — building company, general contractor and design and build firm in one team.
Construction services in City of London
City of London FAQs
Are you a construction company near me in City of London?
Yes. Suddeco works across City of London 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 City of London?
Extensions, lofts, conversions, renovations and new builds in City of London, with the drawings and approvals.
What should we send for a City of London 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.