Grants & funding Cost Calculator
The headline heat pump grant in 2026 is the £7,500 Boiler Upgrade Scheme (BUS) for homeowners in England and Wales — rising to £9,000 for off-gas-grid oil and LPG homes from 21 July 2026. Scotland, Northern Ireland and low-income households have their own routes. This guide covers every…
Open the calculator →Price grants & funding in 30 seconds
2 steps, using the figures from our cost guide.
How this calculator works
Every figure in this calculator is the one published in the cost table on our grants & funding guide. Pick the option that matches your job and the calculator returns that published range, adjusted for your region - it does not model anything the guide does not already say.
That is deliberate. A calculator whose rates drift from the page it sits under is worse than no calculator, because two numbers on the same site disagree.
What it cannot know: access, the condition of what is already there, and anything structural. Those are what separate three real quotes from each other.
Published grants & funding costs (2026)
| Option | Typical 2026 cost | Notes |
|---|---|---|
| Flat / small terrace | £7,000–£10,500 | |
| 2-bed terrace | £8,000–£12,000 | |
| 3-bed semi | £8,000–£14,000 | |
| 4-bed detached | £12,000–£18,000 | |
| Large detached | £15,000–£22,000 | |
| Off-gas oil/LPG home (£9,000 | £10,000–£16,000 |
These are the figures from our grants & funding cost guide.
Grants & funding calculator — FAQs
It uses the same published figures as the cost guide it sits under, adjusted for your region. It is a budgeting estimate, not a quote - only a site visit produces one of those.
Related cost guides
- Grants & funding cost guide — The full price guide
- All heat pump installation services — Browse the hub
- All BestBuilders services — Every trade we cover
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