What is a porch?
A porch is a small extension built around the front door, giving a lobby for coats and shoes and stopping draughts reaching the hall. Most are brick with a pitched tiled roof to match the house, though glazed and timber porches are also common.
How much does a porch cost in Lewisham?
In Lewisham, a porch typically costs £8,500–£21,000 from a 3 m² porch to a small front extension, including VAT at 20% (standard rate). Building costs in London run about 30% above the UK average, and the figures for Lewisham are adjusted to reflect that. Design, structural calculations and council fees are extra.
| Size or type | Guide range |
|---|---|
| From a 3 m² porch to a small front extension | £8,500–£21,000 |
| Higher specification | £21,000–£26,000 |
Your quote will depend mainly on:
- Size and roof style
- Moving meters, drains or the doorbell and lighting
- Front door specification
- Whether building regulations apply
Your exact price depends on the survey and drawings. The guide price tool gives a quick range in the meantime.
Do you need planning permission for a porch in Lewisham?
The approval route for Lewisham is set by planning law in England. In England a porch is permitted development if its ground floor area is no more than 3 square metres, no part is over 3 metres high and it is at least 2 metres from a boundary next to a road.
Building regulations approval comes from the council’s building control service or a registered building control approver. The work is inspected at key stages, such as foundations, drainage and insulation, and a completion certificate is issued at the end.
We check this for your address before design work starts, so there are no surprises later.
What we handle
Handled as part of most porches:
- Plastering and decoration
- Roof and guttering
- Foundations and brickwork
- Design to match the house
- Front door and windows
- Electrics for lighting
How long does it take?
Build time is typically 2 to 4 weeks on site. Allow time beforehand for drawings and approvals, usually 6 to 12 weeks.
Building in Lewisham
Many London boroughs have conservation areas and detailed design guides, so early design advice saves time at the planning stage.
If your home is in Lewisham or close by in Forest Hill, Catford and Peckham, a free home visit is the first step.
How it works
- 01
Survey and brief
We visit, discuss your ideas and budget, and survey the property or site at no cost.
- 02
Drawings and written quote
We prepare the design and give you a written, itemised quote with inclusions and exclusions.
- 03
Approvals
Planning or permitted development confirmation, building regulations and any party wall matters.
- 04
Construction and completion
We build, put right any snags and hand over the building control certificate.
Questions about porches in Lewisham
Can I have a toilet in my porch?
A downstairs toilet usually needs a larger front extension, a drainage connection and building regulations approval.
How much does a porch cost in Lewisham?
In Lewisham, a porch typically costs £8,500–£21,000 from a 3 m² porch to a small front extension, including VAT at 20% (standard rate). Your fixed price depends on the survey and drawings.
Does a porch need building regulations?
In England and Wales a ground-level porch under 30 square metres is usually exempt if the front door stays in place and the glazing meets safety standards. In Scotland the exemption is much smaller (around 8 square metres, with no new opening into the house). If the front door is removed, approval is needed. We check this for your design.
Will it match my house?
We source matching bricks and tiles where possible, or suggest a deliberate contrast.
How long does a porch take in Lewisham?
Typically 2 to 4 weeks on site. Design and approvals beforehand usually take 6 to 12 weeks.