Cost cap calculator
What's the most you'll have to spend to reach C?
Set your property value and what you've already spent since 1 October 2025. The calculator shows your cap and what's left.
Short answer
The MEES cost cap is £10,000 per property including VAT. For homes worth under £100,000 it is 10% of the property's value. Qualifying spending from 1 October 2025 counts toward the cap. It is a maximum, not a target: the government estimates the average cost at about £5,400.
What's the most you'll have to spend?
The cap is £10,000 including VAT. For homes worth under £100,000 it is 10% of value.
Worked examples
The cap at different property values.
The cap is £10,000 including VAT, reduced to 10% of value for homes worth under £100,000.
| Property value | Cost cap |
|---|---|
| £60,000 | £6,000 |
| £80,000 | £8,000 |
| £95,000 | £9,500 |
| £100,000 | £10,000 |
| £250,000 | £10,000 |
How the cap works
Four rules to know.
You only spend what it takes to reach C. The government's average estimate is £5,400.
Cap spend must go on fabric measures before heating or smart measures.
Qualifying spend from 1 October 2025 counts. Keep the invoices.
Spent the cap and still short of C? Register a 10-year exemption.
Questions
Common questions
Does the cap include VAT?
Yes. The £10,000 cap includes VAT.
Does grant funding count toward the cap?
The cap is about landlord spending. Check GOV.UK for how third-party funding is treated under the final regulations.
What counts from October 2025?
Qualifying improvements a landlord pays for from 1 October 2025 count toward the cap. Keep the invoices.
Sources
- Warm Homes Plan (GOV.UK, January 2026)
- Domestic private rented property: minimum energy efficiency standard (GOV.UK)
Checked 18 September 2026. Regulations can change: always confirm on GOV.UK.
Know your number before you spend a penny.
An up-to-date EPC shows your rating and lists the measures that move it most. Book in 60 seconds on homesurvey.eu.