Updated October 2026 · Applies to houses in England and Wales · By Studio 9 Architecture, an architectural design practice in Chester
Short answer
In most cases you don’t need planning permission for a porch in England or Wales, as long as it meets three rules:
its ground floor area is no more than 3 m², measured externally
no part of it is more than 3 m high
no part of it is within 2 m of a boundary with a road or public footpath
Anything bigger, such as a large porch, a front extension or a veranda, normally needs a householder planning application.
A porch is one of the most useful small projects you can do to a house. It gives you somewhere to take off muddy boots, keeps the weather away from the front door, stops heat escaping every time the door opens, and can transform how the front of your home looks. It’s also one of the few additions you can often build without applying for planning permission.
This guide explains the porch rules in England and Wales, when you need planning permission, how Building Regulations apply, and what we’ve learned designing porches and verandas for homeowners in Chester, North Wales and Lancashire.
The porch rules for England and Wales
Porches are covered by a permitted development right called “Class D”. It lets you add a porch outside any external door of a house, not just the front door, without a planning application. The rules are the same in England and Wales.
Permitted development limits for porches on houses (England and Wales)
Floor area: 3 m² or less. Measured externally, including the walls. Roughly 1.5 m × 2 m on the outside.
Height: 3 m or less. Measured from ground level to the highest point of the roof.
Distance from highway: at least 2 m. No part can be within 2 m of a boundary with a road or public footpath.
Type of building: houses only. Flats and maisonettes don’t have this right and need planning permission.
If your porch meets all of these rules, and your home still has its permitted development rights, you can usually build it without applying. If it breaks any one of them, you’ll need a householder planning application.
When do you need planning permission for a porch?
You will normally need to apply for planning permission if:
The porch is bigger than 3 m². This is the most common reason. A porch with room for a bench, coat hooks and a shoe store is often 4 to 6 m².
It’s closer than 2 m to the road or pavement. Homes with short front gardens often fall foul of this rule.
It’s taller than 3 m, for example a porch with a steep pitched roof to match the house.
Your permitted development rights have been removed, either by an Article 4 direction (common in conservation areas) or by a condition on the original planning permission for your house, which is common on newer estates.
You live in a flat or maisonette.
It’s really a front extension or veranda, for example a bigger hallway, a boot room that opens into the house, or a covered seating area across the front.
If your home is listed, you’ll need listed building consent for a porch, whatever its size.
Porch, veranda or front extension: what’s the difference?
Porch
A small enclosed or open structure outside an external door. It’s separated from the house by the existing front door, and it can fall within permitted development if it meets the size rules.
Veranda
A roofed space across the front or side of a house, usually open on at least one side and often timber-framed. Verandas aren’t covered by the porch allowance, and they’re specifically excluded from the general extension rules in both England and Wales. In practice, a veranda almost always needs a planning application.
Front extension
Any extension that adds space to the house itself at the front, such as a bigger hallway, a larger living room or a kitchen that pushes forward. Extensions in front of the main front wall of the house are never permitted development, so they always need planning permission.
Our project at St Mary Avenue in Barnoldswick combines a glazed porch and an open veranda under one oak-framed roof. At 8 m², it’s well beyond the porch allowance, which is why bigger porches and verandas are worth designing properly from the start.
Project example: St Mary Avenue: an 8 m² oak-framed porch and veranda, too big for permitted development, linking the house with the garden.
Do you need Building Regulations approval for a porch?
Usually not, but there are conditions. A porch is normally exempt from Building Regulations in England and Wales if:
it’s built at ground level
its floor area is under 30 m²
the existing front door, or another external-quality door, stays between the porch and the house
any glazing meets the safety glazing rules
If you take out the front door so the porch opens straight into the hall, or you heat it from the house’s central heating, it stops being a porch in Building Regulations terms and becomes an extension. That means it needs Building Regulations approval, with insulation, foundations and structure all checked. Electrical work must meet the wiring regulations either way.
Our Design & Approvals service covers planning and Building Regulations drawings, so you know which applies before you build.
Should you get a Lawful Development Certificate?
If your porch falls within permitted development, you don’t have to apply for anything. But a Lawful Development Certificate from your council confirms in writing that the porch is lawful. It’s optional, but it can be useful when you sell the house, because buyers’ solicitors often ask for proof. It’s also reassuring if your measurements are close to the limits.
Designing a porch that works
A good porch is more than a box around the front door. When we design porches and entrances, we think about:
Depth. Allow enough room to open the outer door, step in and close it behind you before opening the inner door, with space for a bench or shoe store.
Light. Glazing keeps a porch bright and makes the front of the house more welcoming, but needs safety glass at low level and near doors.
Materials. Matching or complementing the house, whether that’s brick and tile, render, or an oak frame on a brick plinth.
The roof. A roof that sits comfortably under first-floor windows and stays under 3 m high if you want to avoid a planning application.
Steps and access. A level threshold or shallow steps make the entrance easier for everyone.
At Middle Road in Wrexham, a new 5.4 m² porch was designed alongside a two-storey side extension, giving the house a clear new entrance as part of one planning application.
Project example: Middle Road: a two-storey side extension with 42 m² per floor and a 5.4 m² porch, through a householder application to Wrexham County Borough Council.
Frequently asked questions
Is the 3 m² porch limit measured inside or outside?
Outside. The 3 m² limit is the ground floor area measured externally, so it includes the thickness of the porch walls. A porch that feels roomy inside can easily go over 3 m² once the walls are counted, so it’s worth measuring carefully before you assume it’s permitted development.
Can I build a porch without planning permission in a conservation area?
Often, yes. The porch allowance applies in conservation areas in both England and Wales, as long as the porch stays within the 3 m², 3 m high and 2 m from a highway limits. But many conservation areas have an Article 4 direction that removes these rights, and any works to a listed building need listed building consent. Check with your council or ask us before you start.
Does an open porch, canopy or veranda need planning permission?
A small open-sided porch outside a front door is still treated as a porch, so the same 3 m² and 3 m limits apply. A veranda is different: a larger roofed structure across the front or side of the house is not covered by the porch allowance, and verandas are excluded from the general extension rules in both England and Wales, so a veranda normally needs a householder planning application.
How long does planning permission for a porch take?
Councils in England and Wales aim to decide householder applications, which include porches and verandas, within 8 weeks of the application being validated. Allow a few weeks before that to prepare drawings, and a little longer if the council asks for changes.
Planning a porch or veranda?
We design porches, verandas and front extensions across Chester, North Wales and the North West, and handle the planning and Building Regulations drawings for you. Our design fee is typically 6 to 9% of the build cost, with no minimum fee, agreed in writing before any work starts.
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Related guides
Please note: This guide gives general information for houses in England and Wales, checked in October 2026. Planning rules can change and depend on your property’s history and location, so confirm what applies to your home with your local council or with us before you build.
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