All you need to know about building a Porch extension including costs of materials, labour and time frames.
One of the simplest extension projects for your home is to build a porch. Making the most of an entrance with a porch is a great looking addition which also offers additional space for bags, coats and boots (plus a handy area for parcels to be left when you are out!). A well thought out porch is not only affordable (as far as extensions go), but will also be an elegant addition to your home. A porch can also add to your home’s value and give it some additional curb appeal if you ever sell. But even though a porch is probably the easiest and cheapest home extension project, there are still potential pitfalls and you also have to be careful about overpaying unscrupulous builders! Hopefully this article will help you to decide on your new porch, plus help you avoid any potential problems while ensuring you pay a reasonable price.
When adding a new porch you need to consider that even if the same materials are used, it may not match the existing exterior of your home very well if the brickwork or plaster is old and grubby. So this would be a good time to have the exterior painted, which will also mean any cracks or loose plaster/mortar will need to also be taken care of. In general you want to spruce up the exterior so the new porch does not stick out like a sore thumb!
When choosing a new porch, one of the most important decisions you have to make is the size, getting this right is crucial. Typically, porches should be a minimum of 1.2m wide and up to 3m deep (any more than this then you are looking at a full front extension which will require planning permission). Most porch projects will feature a dwarf wall made of brick, have a concrete floor, partial glazing, a tiled roof and a security front door. Costs for this type of construction vary from around £800 to £1500 per square metre, but you can of choose a different type of porch. As long as the proposed porch area is 3 metres squared or less, it is unlikely you will require planning permission (though you should always check).
As effectively a small extension, a porch is relatively straightforward to build, but still beyond the scope of all but the most experienced DIY enthusiasts. Most porches will have brickwork to waist height with the upper half glazed. The cheapest form of roofing is a flat roof but a Victorian or Edwardian style pitched roof is much more attractive (and expensive). Once the basic structure is in place, you will need to plaster the interior then fit flooring, with wooden or laminate flooring being the most popular choice for an entrance due to easy cleaning. Finally, you will need to do the decoration and any exterior plaster repairs and painting.
Fixing a new porch to the exterior wall will likely cause damage to the existing plastering/harling, so make sure that making this damage good is included in the quotation, or at least be forewarned and put aside the necessary funds. In addition, ensure that proper damp proofing is in place when the dwarf wall is constructed. Failure to use proper damp-proofing techniques could mean damp using the dwarf wall in the porch to circumnavigate the damp proof course and penetrate the walls of your home.
This information was collated from a combination of online sources and tradesman around the UK. But you should note that the figures provided are only a rough guide as there are several factors which will affect exactly how much your new porch will cost.
The actual price will depend on your location, if the porch is fully enclosed or not, if partially or fully glazed, the materials used (for example the type of wood cladding or external brickwork), and whether a flat roof or a sloping tiled roof. In addition, if you are replacing an existing porch rather than adding a new one, then this will cost more as the old porch has to be demolished and the materials removed.
The average specialist will usually charge around £150-£200 per day in labour. Typically, builders will often work in a pair or as a small team of 3-4 workers to complete the job but can occasionally work on their own depending on the size of the porch being built.
Below are some estimated costs of hiring a tradesman to build a porch:
|Porch Type||Avg. Cost||Duration|
|Lean-to type uPVC Porch||£2500||1-2 weeks|
|Flat Gable Roof Porch||£3500||1-2 weeks|
|Gable uPVC Roof Porch||£2500||1-2 weeks|
|Edwardian uPVC Porch||£3000||1-2 weeks|
Individual costs of building a Small Gable uPVC Roof Porch - Total Cost: £3500