Extensions in St Albans
Local extensions for AL1, AL3, AL4 homeowners, with 13 miles from our Bidwell yard.
Extensions in St Albans
For extensions work in St Albans and the surrounding Hertfordshire streets, what tends to matter most is matching the existing property — and that starts with knowing the local stock.
St Albans is a Roman cathedral city with one of the largest Conservation Areas in the country — beautiful work to do, and a planning environment that rewards proper materials and detailing.
St Albans extensions for us tend to be full planning applications — Article 4 and Conservation Area limits mean almost nothing relies on permitted development, and proper matched detailing is non-negotiable on visible elevations.
Typical St Albans use cases
- Two-storey rear extensions for growing families
- Front porches and entrance extensions
- Garden-room style glazed extensions with structural steel
- Single-storey rear kitchen-diners on 1930s semis
St Albans-specific things we plan around
St Albans housing spans medieval timber-frame in the centre, Georgian and Victorian brick through Fishpool Street and Verulam Road, and large inter-war and modern homes through Marshalswick and Jersey Farm. Built across chalk and gravel terraces above the River Ver, the city has variable foundation conditions — particularly near Verulamium Park and old water-meadow ground, where we always trial pit.
- Article 4 and Conservation Area applications run alongside your architect or planning consultant
- Matched brick, lime mortar and traditional joint profiles on extensions visible from the street
- Foundation depth design across St Albans' variable chalk, gravel and river-meadow ground close to the Ver
St Albans City and District Council operate multiple Conservation Areas and Article 4 directions, which restrict permitted development on a lot of older properties — almost every extension needs a full application.
Materials and methods we use
What's included on St Albans extensions jobs
- Single-storey rear and side extensions
- Double-storey and wrap-around extensions
- Kitchen, dining and family-room extensions
- Foundations, structural steel and load-bearing alterations
- Matched external brick, tile and rainwater detailing
- Full first and second fix, plaster and joinery
Our extensions process for St Albans
- 01Site survey
We meet you on site, look at the actual property and talk through what's realistic before drawings or planning go anywhere.
- 02Planning and Building Regs
We work alongside your architect on planning, Building Regs and party-wall awards — or recommend a trusted one.
- 03Foundations and shell
Trial pits, proper foundation depth, accurate setting out and a watertight shell before first fix begins.
- 04First and second fix
Electrics, plumbing, plaster and joinery brought through to a high finish — including matched external brick, tile and rainwater detailing.
- 05Sign-off and handover
Building Control sign-off, our own written guarantee, snagging cleared and a tidy site at handover.
Common extensions questions in St Albans
- Will you handle the Conservation Area planning process in St Albans?
- We work alongside your architect or planning consultant — supplying brick samples, mortar mixes and pointing details that meet St Albans conservation officers' expectations.
- Can you re-point a Georgian property in St Albans with lime mortar?
- Yes — lime mortar is the right specification for almost all pre-1919 properties in St Albans, and we mix and apply it to suit the original joint profile rather than overpainting modern cement.
- How far across St Albans do you work?
- We cover AL1, AL3 and AL4 — Marshalswick, Jersey Farm, Fleetville, the city centre and out toward Sandridge and Park Street.
- Do you handle planning applications in St Albans?
- We work alongside your architect on the planning application and Building Regs in St Albans — or recommend a trusted one if you don't have one yet.
- Will my St Albans extension match the existing property?
- Matching brick, tile, rainwater detailing and pointing is part of what we do — particularly important on older Hertfordshire stock around AL1.
Streets and neighbourhoods around St Albans we work in
Typical St Albans work for us includes period extensions with matching brick and pointing, conservation-grade re-pointing, stone-flag patios and bespoke garden walls in lime mortar.
- Marshalswick
- Jersey Farm
- Fleetville
- Bricket Wood edge
- Sandridge
- Park Street
Working postcodes: AL1, AL3, AL4 · roughly 13 miles from our Bidwell yard.
“Our rear extension is honestly the best part of the house. Done on time, no surprises.”
Other towns we deliver extensions in
Other services we offer in St Albans
Next steps for your St Albans extensions project
Planning a St Albans extension? Send us the plans and we'll come out and price the real job.
If you're weighing up extensions options anywhere in St Albans (AL1, AL3, AL4), we'll come and walk through what's actually possible.
For more about how we work, see our main extensions page or browse all areas we cover.
Related extensions projects near St Albans
Recent extensions builds we've completed across Bedfordshire — the same team and standards you'll get in St Albans.
- Front Porch with Vaulted Lean-To RoofA new front porch and vaulted lean-to roof adding kerb appeal and 4 sq m of practical hallway space.
- Open-Plan Summer Room ExtensionAn additional open-plan summer room built for entertaining, designed to feel bright and connected to the garden all year round.
- Garage Extension — Music RoomExtension of the garage to create a separate room away from the house, purpose-built for music practice.