How to Apply for GBIS Step-by-Step
Complete guide to applying for the Great British Insulation Scheme in 2025, from eligibility checks to installation.
The GBIS Application Process
Step 1: Check Your Eligibility
Before applying, confirm you meet the basic requirements:
- Council tax band A-D (England) or A-E (Scotland/Wales)
- EPC rating D-G
- UK resident (England, Scotland, or Wales)
Use UGRANT's eligibility checker — get instant results and skip to Step 2 if you qualify
Step 2: Find an Approved Installer
GBIS applications must be submitted by government-approved installers.
UGRANT connects you with vetted installers in your area who are registered for GBIS.
Step 3: Free Property Survey
The installer will visit your property (free of charge) to:
- Check which insulation measures are suitable
- Identify any technical issues
- Provide a quote (including any contribution required)
- Explain the installation process
Step 4: Documentation
You'll need to provide:
- Proof of address (utility bill or council tax statement)
- EPC certificate (if available)
- Proof of benefits (if claiming full funding)
- Landlord consent (if you're a tenant)
Step 5: Installer Submits Application
The installer handles the GBIS application on your behalf. You don't need to contact the government directly.
Timeline: Applications typically take 2-4 weeks for approval.
Step 6: Installation
Once approved, the installer will schedule the work:
- Loft insulation: 1 day
- Cavity wall: 1-2 days
- Solid wall: 2-5 days
Step 7: Sign-Off & Guarantee
After installation, you'll receive:
- Installation certificate
- Guarantee (typically 25 years for insulation)
- Guidance on maintaining your new insulation
How Long Does GBIS Take?
Total timeline from application to completion:
- Eligibility check: Instant (via UGRANT)
- Property survey: 1-2 weeks to schedule
- Application approval: 2-4 weeks
- Installation: 1-5 days (depending on measures)
Average total time: 6-10 weeks
Common Questions
Do I apply directly to the government?
No. GBIS applications must be submitted by approved installers. You don't apply directly.
Can I choose my installer?
Yes, but they must be GBIS-approved. UGRANT connects you with vetted installers who are registered.
What if my application is rejected?
The installer will explain why and may suggest alternative grants like ECO4.
Start Your GBIS Application
Check eligibility and get connected with approved installers
Check GBIS Eligibility