Porch extensions across Hayes (Hillingdon)
We design and build porch extensions for houses in Hayes (Hillingdon), with a written price once the survey and design are done and one point of contact throughout.
- Guide price in Hayes (Hillingdon)From £5,200 inc VAT
- PlanningUsually permitted development under 3 m²
- Build time2–4 weeks on site
- Postcode districtsUB1, UB2, UB3, UB4, UB7
Covering Hayes (Hillingdon)
We cover Hayes (Hillingdon) and the postcode districts UB1, UB2, UB3, UB4, UB7, UB11. We also work in nearby Southall (2 miles), South Ruislip (3 miles), Heston (3 miles), Greenford (3 miles).
Ashford, Surrey, in Surrey, is roughly 6 miles from Hayes (Hillingdon) and also on our list. London's housing is dominated by Victorian and Edwardian terraces, many with a rear outrigger and a side return, and 1930s semis in the outer boroughs. Conservation areas are common, so the planning check comes first.
Porch extension prices in Hayes (Hillingdon)
For Hayes (Hillingdon) we adjust our national guide rates by ×1.3, the factor we use for London. Figures include VAT; your written quote after the survey replaces them.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Small brick or glazed porch, up to 3 m² | £5,200 – £8,450 |
| Standard | Brick porch with tiled roof and composite door | £7,800 – £12,350 |
| Premium | Larger porch with WC or oak frame and premium glazing | £11,700 – £19,500 |
For a figure based on your own dimensions, use our guide-price tool.
Do I need planning permission in Hayes (Hillingdon)?
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.
Building regulations approval is separate from planning. In England you can use the council's building control team or a registered building control approver; a full plans application gets the drawings checked before work starts, and the inspector signs the work off with a completion certificate.
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).
Included in a typical project
- Tiled, slate or flat roof
- Planning check against the porch limits
- Foundations and drainage for rainwater
- Front door, glazing and electrics
- Design to suit the house style
- 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.
What happens next
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
It starts with a visit to your house to measure, check access and talk through ideas and budget.
Design and approvals
We draw the design, agree it with you and handle planning or permitted development checks and building regulations.
Fixed written price
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
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 Hayes (Hillingdon)
Can I see a price before committing to anything?
Yes. The guide prices on this page are adjusted for Hayes (Hillingdon), and the guide-price tool gives a range for your own size. After the survey you get a written price before anything is agreed.
Who do I contract with for a porch extension in Hayes (Hillingdon)?
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.
How long does a porch extension take to build in Hayes (Hillingdon)?
On site, typically 2 to 4 weeks once approvals are in place. Before that, allow 2–8 weeks design and approvals.
How much does a porch cost?
Our guide range is about £5,200 to £19,500 including VAT, depending on size, materials and whether it includes a WC.
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.
Book a free site visit in Hayes (Hillingdon)
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.