Postcode-based home estimates
Enter any UK postcode and select the exact property to see an indicative value estimate and a range for that home.
GaffGuide
Freemium
GaffGuide is a free UK property research service that estimates the value of a specific home from its postcode and property record. It also provides official-data checks for sold prices, energy ratings, local risks and selected property calculations.
GaffGuideとは？
GaffGuide is a free UK home value estimator and property research service covering England, Wales, Scotland and Northern Ireland. Enter a postcode, select the exact home and receive an indicative estimated value with a range, without creating an account or paying. The estimate is intended for research rather than as a formal valuation, mortgage valuation or survey.
The service combines certified floor area from the property's official Energy Performance Certificate with nearby completed sales from HM Land Registry, matching property type and size where possible. Historical sale prices are brought up to date with the UK House Price Index for the local area, with outliers removed. If there is insufficient local data for a reliable estimate, GaffGuide says so rather than guessing.
Alongside individual estimates, GaffGuide provides postcode checks for sold prices, EPC information, recorded crime and flood risk, plus calculators for stamp duty, mortgage overpayment and rental yield. Its city pages show monthly average sold prices for covered local authority areas. Scotland is handled differently because individual Scottish sale prices are not freely published; the site uses official council-area averages and identifies that limitation.
GaffGuideでできること
Comparable sold-price analysis
Uses completed nearby sales from HM Land Registry, matching property type and size where possible, with outliers removed from the estimate.
Market-adjusted pricing
Updates historical comparable prices with the UK House Price Index for the relevant local area so older transactions can be considered against current market conditions.
Property and area checks
Provides postcode lookups for EPC ratings and certified floor area, recorded street crime, flood risk, and recorded sale prices. The sources include official registers and public authorities such as the Environment Agency and police.uk.
UK property calculators
Includes stamp duty calculations for England, Scotland, Wales and Northern Ireland, as well as mortgage overpayment and gross and net rental-yield calculators.
City price comparisons
Shows monthly average sold prices for covered cities and local authority areas across the UK, with pages for comparing cheaper and more expensive areas.
利用シーン
“Preparing for a home move”
A homeowner or prospective seller can check an indicative value for a specific address before deciding how to research the local market further. The estimate is a starting point, not a replacement for a formal valuation.
“Screening properties to buy”
A buyer can compare a property's estimate with nearby recorded sales, inspect its EPC details and review local crime or flood-risk information before progressing with more detailed checks.
“Comparing areas and budgets”
Someone exploring different UK locations can use city-level monthly averages and the site’s area rankings to narrow down places to investigate, then check individual postcodes.
“Assessing a buy-to-let or financing scenario”
A property researcher can combine a home price or local sold-price check with the rental-yield and stamp-duty calculators, while a borrower can use the mortgage overpayment calculator to examine potential interest and time savings.
よくある質問
How do I get an estimate for a home?
Enter a UK postcode, then choose the exact home from the results. GaffGuide returns an indicative estimated value with a range where there is sufficient supporting data.
What data is used to calculate the estimate?
The methodology uses the property's certified floor area from its official EPC, nearby completed sales from HM Land Registry matched by property type and size where possible, and the UK House Price Index to update past prices. Outliers are removed.
Is the estimate a formal property valuation?
No. GaffGuide describes its estimates as algorithmic and indicative. They are not formal valuations, mortgage valuations or surveys.
Does GaffGuide cover Scotland?
Yes, the service covers Scotland, but Scottish data is treated differently. Because individual Scottish sale prices are not freely published, GaffGuide uses official council-area averages from the UK House Price Index and states this on the relevant page.
Do I need an account or payment to use the service?
No. The site says its estimates and property tools are free, with no sign-up, account or payment required.
クイック情報
- Product type
- UK home value estimator and property research tools
- Coverage
- England, Wales, Scotland and Northern Ireland
- Access
- Free; no sign-up, account or payment required
- Primary workflow
- Enter a postcode, select the exact home, and review the estimate and range
- Core data sources
- HM Land Registry, UK House Price Index and Energy Performance of Buildings register
- Estimate limitation
- Indicative only; not a formal, mortgage or survey valuation
