BEGINNERS COST CALCULATOR

Step 1 - Average Build Cost

Build Route (help)
Number of Storeys and House Size (help)
Gross internal floor area (including integral garages and excluding basements, roof space, detatched garages and outbuildings) (help)
Click here to convert from square feet to m2
 m2
Build Quality (help)
Region (help)

Step 2 - Adjustments

Additional accommodation area in roof (help)  m2
Area of basement required (help)  m2
Alternative Wall Facing Materials (help)
Roofing Materials (help)
Do you require Raft or Pile foundations? (help)
Sloping Sites (help)
If your site has a slope, enter the slope here
 degrees
Bespoke Joinery (help)
If you have a quotation for bespoke doors and windows, enter it here £
Bespoke Kitchen (help)
If you have a quotation for a bespoke kitchen, enter it here £
High Ceilings (help)
If your ceiling heights are above 2.4m, enter the height in metres here
 m
Detatched garages and outbuildings (help)
Typical single garage 17m2, double 35m2, triple 56m2
Enter the gross floor area of detatched garages and outbuildings here
 m2

Step 3 - Additional Costs

Land Cost (help)
Varies depending on size and location but normally ranges between 33-50% of budget. Consult the plotfinder.net directory for your area to get an idea of local prices.
Land cost
£
Legal Fees (help)
Conveyancing fees, Land Registry fees and local searches will typically cost in the region of £5-600. Speak to your solicitor.
Legal fees
£
Site Survey (help)
By surveyor or architect. Typical cost £350–400. Speak to your designer or a surveyor.
Site survey cost
£
Finance Costs (help)
See the finance section.
Finance costs
£
Design Fees (help)
Architect’s fees can range from 7–15% of the total build cost for a full service involving design, tender and contract administration. Plan drawing services only are also available from architects and other professionals such as architectural technologists, surveyors, engineers and also non qualified house designers. For planning drawings expect to pay from £2,500–3,500 plus VAT plus a similar figure for Building Regulation drawings. Package suppliers, including timber frame manufacturers, usually include design fees within their package price.
Design fees
£
Structural Engineer’s Fees (help)
Design calculations required for construction details (usually foundations and roof) and as required by Building Regulations. Typical costs are £400–500. Speak to your designer or a surveyor. Contact RICS 0207 222 7000.
Structural Engineer’s fees
£
Planning Application Fees (help)
Detailed application fee is currently £190. Speak to your local authority planning department.
Planning Application fees
£
Building Regulations Fees (help)
For a new dwelling of up to 300m2 the initial plan fee payable on submission is typically £164.50 including VAT. A further fee of £188 plus VAT for inspections is also payable. Fees for renovation and conversion work are higher. Check with your Local Authority for exact cost details. The NHBC are also able to make the statutory inspections for Building Control purposes. Contact NHBC Solo for Self Build (01494 735760) for details.
Building Regulations fees
£
Warranty (help)
You need structural defects liability insurance. Typical cost £700–1,500. Read insurances in the finance section below.
Warranty costs
£
All Risks Self-build Insurance (help)
You will need public liability, employer’s liability and site risk insurance. £500–800. See insurances in the finance section below.
All risks self-build insurance
£
Services (help)
Connection of water, gas, electricity, telecom and drainage — typically totalling £3,500–6,000. Costs will depend on distance from the highway and the location of mains services. Contact your local utility suppliers. Off mains drainage will usually add to costs — contact specialist suppliers for a quote.
Services costs
£
Demolition Costs (help)
In the case of a replacement dwelling, the cost of demolition needs to be taken into account. Typical cost is £6,000–7,000 excluding the value of any items that have salvage value.
Demolition costs
£
External Works (help)
Typical expenditure on outbuildings and landscaping is around 15% of build costs.
External works
£

Summary

Note - Always press the "Calculate" button after making changes.

Average Build Cost per square metre £/m2 
Average Build Cost for this dwelling £ 
Adjustments £ 
Additional Costs £ 
Stamp Duty
Stamp duty will be levied on the purchase of any plot over £60,000 and will be collected by your solicitor. The tax is currently levied at 1% for plots valued from £60,001–£250,000, 3% for plots valued from £250,001 to £500,000 and 4% for plots over £500,000.
Stamp Duty
£
Total Project Cost £ 

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