Blog>Cost Guides>Cost of a toilet in the front porch in the UK
Last updated: 31 March 2022
Cost of a toilet in the front porch in the UK
Fancy building a porch so you don’t have to enter your property directly into your living area? Fancy adding a downstairs toilet? Both these projects could add value to your house and make it more appealing. So, why not kill two birds with one stone by adding a front porch with a toilet? To help you out, we’ve broken down the average front porch with toilet cost in the UK.

In this article you'll find:
Fancy building a porch so you don’t have to enter your property directly into your living area? Fancy adding a downstairs toilet? Both these projects could add value to your house and make it more appealing. So, why not kill two birds with one stone by adding a front porch with a toilet? To help you out, we’ve broken down the average front porch with a toilet cost in the UK.
How much does a porch extension with a toilet cost in the UK?
The typical cost of a front porch extension with a toilet in the UK is between £1,100 and £1,400 per m2. However, this doesn’t include the cost of your bathroom fittings. On average, you can expect to pay between £50 and £200 for a new toilet and between £50 and £250 for a new sink.
Item | Unit | Cost - low | Cost - high | Average cost |
---|---|---|---|---|
Porch extension with toilet | Per m2 | £1,100 | £1,400 | £1,250 |
Add toilet to existing porch | Labour and materials | £1,500 | £2,000 | £1,750 |
Last updated: May 2024 Our costs are ballpark averages - get a local tradesperson to quote now |
Front porch extension with toilet cost factors
The total cost of your front porch extension with toilet will depend on a number of factors, including:
Size of the extension.
Type of extension (eg. lean-to, flat roof, pitched roof etc.).
Material of the extension (eg. brick, aluminium, stone etc.).
Size of the bathroom.
Spec of the bathroom.
Location and ease of access.
See the tradespeople we've checked and recommend for your job

How much does adding a downstairs toilet in a porch cost?
If you have an existing front porch and it’s big enough to accommodate a toilet, you could save on the cost of a porch extension by simply adding in a bathroom. The average cost to install a downstairs toilet in the UK is £650 for materials and £600 for labour. You should also budget an additional £300 for groundworks and £100 for soil removal.
Key takeaways
Front porches and downstairs toilets can both add value to your home.
Building a front porch with a downstairs toilet could be a great way of killing two birds with one stone.
The cost of a front porch with a toilet will depend on the size of the extension and the spec of the bathroom.
Add a toilet to an existing front porch to save money.
See the tradespeople we've checked and recommend for your job
See the tradespeople we've checked and recommend for your job