Porch extensions across Yarm
Yarm homeowners can use us for the whole porch extension project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in YarmFrom £3,600 inc VAT
- PlanningUsually permitted development under 3 m²
- Build time2–4 weeks on site
- Postcode districtsTS15, TS16

How much does a porch extension cost in Yarm?
Prices below are for Yarm, using the North East England factor of ×0.91. They are guide ranges including VAT for the build only, not a quote.
| Option | What it covers | Guide price |
|---|---|---|
| Essential | Small brick or glazed porch, up to 3 m² | £3,600 – £5,950 |
| Standard | Brick porch with tiled roof and composite door | £5,450 – £8,650 |
| Premium | Larger porch with WC or oak frame and premium glazing | £8,150 – £13,650 |
Want a range for your exact size? The guide-price tool takes about a minute.
Planning rules that apply in Yarm
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.
Homes in conservation areas, national parks, National Landscapes (formerly AONBs), the Broads and World Heritage Sites have tighter rules, so we always check the property's status and planning history before design starts.
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
- Foundations and drainage for rainwater
- Planning check against the porch limits
- Design to suit the house style
- Tiled, slate or flat roof
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.
Working in Yarm
Across TS15, TS16, we can visit, measure and advise. Neighbouring towns we cover include Thornaby-on-Tees (3 miles), Stockton-on-Tees (5 miles), Billingham (6 miles), Darlington (8 miles).
For homes towards North Yorkshire, Middlesbrough is around 7 miles away. Across the North East, houses often have rear yards or modest gardens, so compact, well-lit single-storey extensions make the biggest difference.
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
First, a site visit: we look at the house, garden, access and drains and listen to what you need.
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
You receive a written, itemised price and programme. Nothing starts until you are happy with it.
Build and sign-off
Our team builds the extension, keeps you updated weekly and finishes with building control sign-off.
Porch extension questions answered
Who do I contract with for a porch extension in Yarm?
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 you cover all of Yarm?
Yes. We cover Yarm and the surrounding parts of County Durham. Site visits are free and there is no obligation.
Do I need building regulations approval in Yarm?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
How much does a porch cost?
Our guide range is about £3,600 to £13,650 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 Yarm
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.