A porch is a small enclosed structure built over a front or side door, adding a weatherproof entrance space for coats, shoes and deliveries, improving security and reducing draughts and heat loss from the house.
Addresses across SM1, SM2, SM3 and SM4 fall within our coverage for a new porch, so if your home is in Carshalton we can arrange a survey on a day that works for you. We inspect the existing building, discuss materials and layout, and then price the agreed specification in writing. Expect a guide range of £4,600–£10,500 including VAT before that visit.
- Guide price
- £4,600–£10,500 inc VAT
- Time on site
- 1–2 weeks on site
- Postcodes
- SM1, SM2, SM3, SM4 and SM5
- Planning rules
- England
- Local area
- Greater London
- Survey
- Free, with a written quote
Porches prices in Carshalton
The table below shows guide prices for a new porch in Carshalton. They are based on rates in London, which run about 30% above the national guide, giving an overall range of £4,600–£10,500. All figures include VAT and are firmed up after a free site survey.
| Type of job | What it usually involves | Guide in Carshalton |
|---|---|---|
| Canopy or open porch | A tiled or lead canopy, or an open timber porch, over an existing door. | £1,300–£3,900 |
| uPVC or aluminium porch | A glazed enclosed porch on a brick dwarf wall with a new door. | £3,900–£7,200 |
| Brick-built porch | A fully brick-built porch matching the house, with tiled roof, windows and lighting. | £7,200–£13,000 |
Your price depends mostly on:
- Floor area and height of the porch
- Construction: uPVC, aluminium, brick or timber frame
- Door and window specification
- Drains, meters or paths that need moving
What’s included?
- Survey of the doorway, paths, drains and meters
- Brick dwarf walls or full brick walls to match the house
- Roof tiled or covered to suit the house, with flashing
- Windows and an external door in your chosen style
- Guttering and a downpipe connected to drainage
- Electrics for lighting or sockets by a qualified electrician
Building in Carshalton
London's housing is dominated by Victorian and Edwardian terraces, often in yellow London stock brick, with Georgian terraces in central districts and mansion blocks across many inner areas. Outer boroughs have large belts of interwar semis, and there are extensive post-war council estates. Many houses have been split into flats, and conservation areas are widespread.
Terraces suit side-return extensions and rear dormer loft conversions; interwar semis commonly take hip-to-gable lofts. Shared party walls, restricted parking and conservation rules often shape the plans and the programme.
Whatever era your Carshalton home dates from, we plan a new porch around how it is actually built rather than a one-size-fits-all specification.
Planning and building rules in Carshalton
Planning law differs across the UK. For a home in Carshalton, it is the England rules below that count, and we check them with the council ahead of any quote.
In England, a porch is usually permitted development if its ground floor area is no more than 3 m², no part is higher than 3 m, and it is at least 2 m from any boundary with a road.
Small porches at ground level are usually exempt from Building Regulations if the front door stays in place between porch and house, but safety glazing and any electrics must still comply.
Rules change and every property is different, so we check the planning history and constraints for your address before we quote.
What happens after you get in touch?
We look at the job
We arrange a free site survey on a date convenient to you. We measure up, look at the existing structure and access, and discuss your plans for a new porch so the price reflects your home.
Price and scope agreed
We put everything into a written, fixed-price quote: the specification, what's excluded, staged payments and the expected time on site. Take whatever time you need to decide; there's no pressure to commit.
Getting ready
With the quote agreed, we book the work in and handle preparation: permissions where needed, building control notifications, material orders and access arrangements for your Carshalton property.
On site to finish
On site, the agreed plan is followed and any change is put in writing first. At completion we do a final clean, go through the snagging list with you and leave you with the relevant documents.
Why homeowners choose us
Common questions
Who do I deal with during the job?
One point of contact manages your project from survey to handover. They schedule the trades working under our contract, keep you updated on progress, and are the person to call with any question. You don't need to coordinate builders, electricians or decorators separately, because that is part of what we do.
Can I use my porch as a room?
A porch is designed as an entrance space for coats, shoes and deliveries rather than a habitable room. If you want to use it as part of the house, for example by removing the front door between them, it is likely to need building regulations approval like a small extension, with higher insulation standards. We can design the porch to suit either use.
What if there is a gas meter or drain where the porch will go?
A gas or electric meter box or a drain in the porch area does not usually stop a porch being built, but it affects the design and cost. Meters may need moving by the supplier, which takes time to arrange. Manholes can sometimes be enclosed with a sealed cover, depending on the drainage. We check these details at the survey and include them in the quote.
Can I stay at home during the work?
In most cases, yes. Most people can live at home throughout, and we plan the work to keep disruption down by protecting floors, agreeing working hours and keeping access routes clear. Bigger jobs affecting kitchens, bathrooms or heating may mean a short spell with reduced facilities, and we talk this through with you at the survey.
Does a porch need building regulations approval?
Small porches are often exempt from building regulations, provided the existing front door stays between the porch and the house and the floor area is modest. Glazing must still be safety glass and any electrics must be certified. If you remove the front door so the porch becomes part of the house, it is treated like an extension. Rules vary between UK nations, so we confirm what applies.
Near Carshalton
From SM1, SM2, SM3 and SM4 to the edges of Carshalton and on into Wallington, Sutton and Mitcham, we can arrange a site visit and a written quote for your project, planned around dates that work for you.