Development cost appraisal
Set out the construction and wider development cost assumptions before comparing them with an indicative completed value.
by Jack Butler-Kettle · About 2 min readShare
How to use it
Replace the invented assumptions with professional project evidence. Include land, fees, finance, sales costs and tax consistently; test timing and downside cases separately.
Development cost appraisal
Replace the invented assumptions with professional project evidence. Include land, fees, finance, sales costs and tax consistently; test timing and downside cases separately.
Free blank template for your own project. The completed example is shown below. No email address required.
View the completed example
Completed fictional example
Westhaven refurbishment · 14 October 2026 · Version 1.0
Development cost appraisal
Scroll across if needed to read the whole record. A dash means no value has been entered.
| Scenario | Completed value (£) | Land (£) | Construction (£) | Fees / risk (£) | Finance / sales / tax (£) | Indicative surplus (£) | Basis |
|---|---|---|---|---|---|---|---|
| Base teaching case | £900,000.00 | £200,000.00 | £450,000.00 | £70,000.00 | £60,000.00 | £120,000.00 | All project costs entered on consistent VAT basis; no benchmark claim |
| Construction downside | £900,000.00 | £200,000.00 | £495,000.00 | £70,000.00 | £60,000.00 | £75,000.00 | Construction cost 10% higher; other assumptions held fixed |
The example surplus falls from £120,000 to £75,000. This simple appraisal does not model discounted returns, borrowing drawdowns or market value; those need separate analysis.
Understanding your results
The example surplus falls from £120,000 to £75,000. This simple appraisal does not model discounted returns, borrowing drawdowns or market value; those need separate analysis.
How it works
The workbook provides blank working records. Grey cells calculate from the entered inputs; yellow cells are for your information. The completed example stays on this page.
Read the related guidance for the context and checks behind this template.
If you need help preparing or reviewing the project records, our quantity surveying services explain the tasks available under a separate appointment. Agree the deliverable, responsibilities and required specialist input before work starts.