Porch extensions in Bushey: design, approvals and build
Thinking about a porch extension for your Bushey home? Start with a free site visit: we measure up, check what the council will allow and give you honest guide figures on the day.
- Guide price in BusheyFrom £4,200 inc VAT
- PlanningUsually permitted development under 3 m²
- Build time2–4 weeks on site
- Postcode districtsWD1, WD2, WD17, WD18, WD19

How much does a porch extension cost in Bushey?
These guide figures apply our East of England adjustment (×1.06) to national rates. They include VAT at 20% and cover the build itself; design and council fees are listed separately.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Small brick or glazed porch, up to 3 m² | £4,200 – £6,900 |
| Standard | Brick porch with tiled roof and composite door | £6,350 – £10,100 |
| Premium | Larger porch with WC or oak frame and premium glazing | £9,500 – £15,900 |
Want a range for your exact size? The guide-price tool takes about a minute.
Covering Bushey
We cover Bushey and the postcode districts WD1, WD2, WD17, WD18, WD19, WD23. The same team covers Watford (2 miles), Borehamwood (4 miles), Rickmansworth (5 miles), St Albans (7 miles), all within easy reach.
Wealdstone, in Greater London, is roughly 3 miles from Bushey and also on our list. Across the East of England many houses sit on generous plots, and single-storey and wraparound extensions are a natural fit.
Planning rules that apply in Bushey
In England a porch is usually permitted development if its ground floor area is no more than 3 m² measured externally, no part is over 3 m high, and no part is within 2 m of a boundary next to a road.
Before any drawing is finalised we check whether the house is listed, in a conservation area or subject to an Article 4 direction.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Building over or within 3 m of a public sewer needs the water company's consent, usually through a build-over agreement, before the foundations go in.
Applications are decided by the local planning authority (your district, borough or unitary council).
What is included
- Design to suit the house style
- Foundations and drainage for rainwater
- Front door, glazing and electrics
- Planning check against the porch limits
- Brick, render or oak frame walls
Proportion matters on a porch more than on any other extension, because it is at the front. We match the roof pitch and brick and keep the front door in proportion with the house windows.
How the project works
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
We produce the drawings and structural design, and manage the approvals so they are in place before work starts.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Your questions about a porch extension in Bushey
Who do I contract with for a porch extension in Bushey?
Your contract is with S&K Property Investments and Improvement Ltd, which designs and manages the project and the build teams who carry it out.
Do I need building regulations approval in Bushey?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Bushey, and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Do I need planning permission for a porch?
In England a porch is usually permitted development if its ground floor area is no more than 3 m² (measured externally), no part is higher than 3 m, and no part is within 2 m of a boundary next to a highway. Other nations have similar but separate rules.
How much does a porch cost?
Our guide range is about £4,200 to £15,900 including VAT, depending on size, materials and whether it includes a WC.
Book a free site visit in Bushey
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.