How much does an extension cost uk?
When you are looking to improve your home there are several options.
There is an increasing desire and popularity for creating comfortable open plan living spaces that benefit from natural light from the clever use of highly efficient doors, windows and sky pod roofs.
A renovation or extension can give a home a new lease of life.
How much do they cost?
The larger and more complicated the project the more it will cost.
A pre-planning estimate should always be sort from a competent reviewed builder before deciding on a plan.
I often send a quotation for a potential project that turns out to way above my clients budget.
This is unhelpful as it might turn out that I waste my time or the client is forced to cut back on their dreams and expectations.
We have compiled a list of variables that will affect the overall cost of your project and how much you can expect your final expenditure to be.
Ground Floor rear extension cost uk (20-30m2) Typically 8-10metres wide 2.5-3metres deep (Not including potential underpinning)
Brick shell plus plastering only with GRP fibreglass roof £25-35k
Skypod £1.5-2.5K
Bi-folding doors £1k per door
Sliding aluminium doors £2k per door
Large beam to allow the existing house to open into the extension space £6-12K
Other smaller beams where existing load bearing partition walls are to be removed £4-8k
Doorway opening moved or blocked up £1K
Re-plastering the existing walls and new ceiling £5k
Typical kitchen units, ovens, fridge etc £20-£30k
Electrics price £3k
Feature radiators each supplied and fitted £700 each
Underfloor heating plus flow screed £4-6K
First floor double extension cost uk, onto an existing ground floor extension. (Not including potential underpinning the ground floor foundations)
Extension size (20-30m2) Typically 8-10metres wide 2.5-3metres deep
Brick shell plus plastering only with tiled roof above £35-45k
Windows £500 each
Electrics price £1k per room
Plumbing price £500 per standard radiator
Bathroom 8m2 floor size supply bathroom suite £1k-£3k
Strip bathroom and replaster £2k
First fix plumbing £1.5k
Second fix plumbing £1.5K
Electrics price £1.5k
Feature radiators £700 each
Tiles supply £700-£2k
Tile fix £1k
New boiler £2-3K
Pressurised cylinder £2-3K
These prices are estimates. All prices plus VAT
The following will affect the cost of your project.
Call us 07885 374253 for a pre-planning estimate.
There is an increasing desire and popularity for creating comfortable open plan living spaces that benefit from natural light from the clever use of highly efficient doors, windows and sky pod roofs.
A renovation or extension can give a home a new lease of life.
How much do they cost?
The larger and more complicated the project the more it will cost.
A pre-planning estimate should always be sort from a competent reviewed builder before deciding on a plan.
I often send a quotation for a potential project that turns out to way above my clients budget.
This is unhelpful as it might turn out that I waste my time or the client is forced to cut back on their dreams and expectations.
We have compiled a list of variables that will affect the overall cost of your project and how much you can expect your final expenditure to be.
Ground Floor rear extension cost uk (20-30m2) Typically 8-10metres wide 2.5-3metres deep (Not including potential underpinning)
Brick shell plus plastering only with GRP fibreglass roof £25-35k
Skypod £1.5-2.5K
Bi-folding doors £1k per door
Sliding aluminium doors £2k per door
Large beam to allow the existing house to open into the extension space £6-12K
Other smaller beams where existing load bearing partition walls are to be removed £4-8k
Doorway opening moved or blocked up £1K
Re-plastering the existing walls and new ceiling £5k
Typical kitchen units, ovens, fridge etc £20-£30k
Electrics price £3k
Feature radiators each supplied and fitted £700 each
Underfloor heating plus flow screed £4-6K
First floor double extension cost uk, onto an existing ground floor extension. (Not including potential underpinning the ground floor foundations)
Extension size (20-30m2) Typically 8-10metres wide 2.5-3metres deep
Brick shell plus plastering only with tiled roof above £35-45k
Windows £500 each
Electrics price £1k per room
Plumbing price £500 per standard radiator
Bathroom 8m2 floor size supply bathroom suite £1k-£3k
Strip bathroom and replaster £2k
First fix plumbing £1.5k
Second fix plumbing £1.5K
Electrics price £1.5k
Feature radiators £700 each
Tiles supply £700-£2k
Tile fix £1k
New boiler £2-3K
Pressurised cylinder £2-3K
These prices are estimates. All prices plus VAT
The following will affect the cost of your project.
- Fees
- Size
- Labour costs
- Access to the site
- Location
- Function
- Contractor ( If he takes on several jobs at once your job should be
- Materials and methods of building. Bespoke products cost more than off the shelf products.
- Design and complexity
- Drainage and foundation types
- VAT
Call us 07885 374253 for a pre-planning estimate.
