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.
From a first conversation about a new porch to the day the site is cleared, homeowners in Barnet deal with us directly. We come out to measure up at no cost, explain the choices in plain terms and send a written quote. For context, comparable work in London usually falls within £4,600–£10,500 including VAT, and it is available across EN4, EN5, N3 and N12.
- Guide price
- £4,600–£10,500 inc VAT
- Time on site
- 1–2 weeks on site
- Postcodes
- EN4, EN5, N3, N12 and N20
- Planning rules
- England
- Local area
- Greater London
- Survey
- Free, with a written quote
What should you budget for a new porch in Barnet?
What will a new porch cost in Barnet? Our guide range is £4,600–£10,500 including VAT. That figure is adjusted for London, about 30% above the national guide, and is intended for planning a budget. A firm written price for your chosen specification follows a free survey at your home.
| Type of job | What it usually involves | Guide in Barnet |
|---|---|---|
| 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 |
The main things that change the figure:
- Construction: uPVC, aluminium, brick or timber frame
- Roof type and how it meets the house
- 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
- Guttering and a downpipe connected to drainage
- Electrics for lighting or sockets by a qualified electrician
- Plastering, sills, skirting and flooring ready to use
Building in Barnet
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.
London Clay shrinks and swells with the seasons, and street trees close to houses can contribute to movement, which affects foundation design.
These patterns matter for a new porch: older walls, roofs and floors in Barnet can need different materials or extra preparation compared with newer homes.
Permissions for a new porch in Barnet
Each UK nation sets its own consent rules, and Barnet is in England. What follows is a plain summary; we check the specifics for your property with the council before pricing anything.
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.
The four stages
Survey and measure
A free survey comes first. It gives us what we need to price a new porch properly, including dimensions, existing materials and access for deliveries, and gives you the chance to ask anything you like.
Quote in writing
Next you receive a written quote with a fixed price for the agreed specification. It lists what is included, what is not, and how payments are staged, so you can compare it properly.
Dates and permissions
We handle the paperwork side: checking whether planning permission or building control approval is needed, submitting applications where they are, and scheduling the trades and materials around your dates.
Finish and handover
The work is carried out to the agreed specification, with floors and furniture protected and the site kept tidy. At the end we clean up, walk through the finished job with you and hand over any certificates.
What you can expect from us
Porches in Barnet: questions
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.
Is the price fixed?
Yes, for the specification we agree. Your written quote sets out exactly what is included at a fixed price. It only changes if you ask for something different, or if a problem the survey could not reasonably reveal later needs extra work. In either case we explain the change and confirm it in writing before going ahead.
How long does it take to build a porch?
Building a porch usually takes one to two weeks on site. Foundations and base go in first, then the brickwork, roof, windows and door. uPVC and aluminium porches are often quicker because the frames are made off-site, while brick-built porches with a tiled roof take a little longer. Frames and doors are made to measure, so allow a few weeks' lead time before starting.
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.
Which postcodes in Barnet do you cover?
We cover EN4, EN5, N3 and N12, along with the rest of London. If your postcode is not listed, get in touch anyway: our coverage is UK-wide, and we can usually arrange a survey wherever you live. Enter your postcode in the guide-price tool or contact form and we will confirm.
Also covering areas around Barnet
Live in Barnet? Our coverage takes in the EN4, EN5, N3 and N12 postcode areas and reaches out to East Barnet, Hadley Wood and Potters Bar, so homes on the outskirts and in the next town along are included.