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 HA2, HA4, UB1 and UB4 fall within our coverage for a new porch, so if your home is in Northolt 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
- HA2, HA4, UB1, UB4 and UB5
- Planning rules
- England
- Local area
- Greater London
- Survey
- Free, with a written quote
What should you budget for a new porch in Northolt?
Below is a breakdown of typical costs for a new porch in Northolt. Because rates in London are about 30% above the national guide, the overall guide comes to £4,600–£10,500, including VAT. Size, materials and access move the figure, and a free-of-charge survey settles it.
| Type of job | What it usually involves | Guide in Northolt |
|---|---|---|
| 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
- Roof type and how it meets the house
- Door and window specification
- Drains, meters or paths that need moving
What’s included?
- Foundations and a concrete base with damp-proof membrane
- 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
- Plastering, sills, skirting and flooring ready to use
Homes in London
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.
Whatever era your Northolt home dates from, we plan a new porch around how it is actually built rather than a one-size-fits-all specification.
Permissions for a new porch in Northolt
England, Wales, Scotland and Northern Ireland each handle planning a little differently. Northolt comes under England, covered below, and we raise any questions with the council before your quote is finalised.
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.
From survey to handover
We look at the job
Book a visit and we'll come to you. The survey covers measurements, the state of what's there now and any obvious constraints, so the price that follows is based on your actual home, not an average.
Written quote
After the survey we send a quote for a new porch that fixes the price for the scope we've agreed. If you want to change materials or scope, we revise it in writing before anything is booked.
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.
The work itself
Work goes ahead as scheduled and you deal with one contact throughout. When the last trade leaves, we clear and clean the site, talk you through what has been done and pass on any certificates and care instructions.
What you can expect from us
Questions about a new porch in Northolt
How much will a new porch cost in Northolt?
As a guide, expect to pay £4,600–£10,500 including VAT for a new porch in Northolt. That range is adjusted for London, which runs about 30% above the national guide. Where your project lands depends on size, materials, access and the condition of what is already there. We confirm a fixed price in writing after a free survey of your home.
Will a porch make my house warmer?
A porch acts as a buffer between the front door and the outside, so cold air does not rush straight in every time the door opens. This reduces draughts in the hallway or living room and can help cut heat loss. It also gives a dry place to take off wet coats and shoes. Well-insulated walls, double glazing and a good door make the biggest difference.
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.
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.
Do I need planning permission for a porch?
Whether a porch needs planning permission depends on its size and height, how close it is to a road, your home's location, whether it is listed or in a conservation area, and which UK nation you live in. In England, a porch is usually permitted development if its ground floor area is no more than 3m², no part is over 3m high and it is at least 2m from a boundary with a road. We check before quoting.
Nearby towns
Northolt and its HA2, HA4, UB1 and UB4 postcodes are part of our coverage. Homeowners in Greenford, Harrow and Southall can also book a free survey with us and receive a written price for their job.