Council Tax Appeal Comparable Properties — How to Find and Use Them

Your neighbour pays less council tax than you for what looks like the same house. That observation is what starts most band challenges — but at the Valuation Tribunal, a casual comparison won't cut it. The tribunal needs structured, documented comparable evidence that proves a pattern, not an anomaly.

What "Comparable" Actually Means at Tribunal

The VTE doesn't compare council tax bills. It compares properties against five criteria to determine whether the bands are consistent:

1. Gross external area (GEA) — the total floor area measured externally, in square metres. A four-bed detached with an extension is not comparable to a three-bed semi.
2. Property type and layout — detached, semi-detached, terraced, flat, maisonette. Compare like with like.
3. Age and construction era — a 1930s semi and a 1970s semi may look similar but typically valued differently in 1991.
4. Location — properties on the same street or within the same immediate locality. The further away your comparable, the weaker the argument.
5. Condition as of 1 April 1991 — the statutory valuation date. What the property is worth today is irrelevant; what matters is its hypothetical open-market value in April 1991.

Step 1: Check Your Neighbours' Bands

Start with the GOV.UK "Check your Council Tax band" service. Search your postcode and you'll see every residential property in the area with its current band. Screenshot or print these results — they're your baseline evidence.

Look for properties in a lower band that match yours in size and type. If you live in a three-bed semi in Band D and three similar semis on your street are in Band C, that's a strong starting point.

Step 2: Get Floor Area Data

The band comparison only works if the properties are genuinely similar in size. Two ways to verify:

Planning portal records — your local authority's planning portal shows planning applications with floor plans and dimensions. If a comparable property had a planning application, you may find its gross external area documented there.

Google Earth and OS maps — for footprint comparisons when floor plans aren't available. One successful appellant on r/AskUK described using Google Earth to measure plot sizes and footprints for every property on their street.

If your property is materially smaller than its band suggests — or the same size as lower-banded neighbours — document the measurements.

Step 3: Pull Land Registry Sale Prices

Land Registry Price Paid Data is publicly available and free to search. You're looking for two things:

Direct 1991 evidence — sales of your property or comparables between 1989 and 1993. These are the gold standard because they show actual market values close to the 1 April 1991 anchor date.

Indexed modern sales — for sales after 1993, adjust the price back to 1991 using the Nationwide or Halifax House Price Index Calculator. Use the regional index, not the national average. A £200,000 sale in 2015 might index back to £48,000 in 1991 — squarely in Band B territory.

Document every calculation. The presenting officer from the VOA will challenge any indexing that uses the wrong regional base or an incorrect quarter.

Step 4: Build the Comparison Table

Present your comparables in a structured table. For each property, include:

• Address
• Current council tax band
• Property type (semi, terrace, detached)
• Number of bedrooms and approximate GEA
• Land Registry sale price and date
• Indexed 1991 value (if applicable)
• Source reference (Land Registry title number, VOA listing URL)

Lay your own property alongside them. The tribunal panel should be able to read the table and immediately see why your band is inconsistent with the neighbourhood pattern.

The Tone of the List Test

The VTE doesn't just look at your chosen comparables. It looks at the overall pattern — the "tone of the list." If most similar properties in your area support your current band and you've found one or two exceptions, the tribunal will likely treat those exceptions as errors rather than evidence that your band is wrong.

The strongest cases involve multiple comparables — three or more properties of similar size and type in a lower band, ideally on the same street or within the same development. A single outlier rarely wins.

What to Avoid

Don't rely on properties that are significantly different from yours — a bungalow is not comparable to a two-storey semi, even on the same street. Don't use current Zoopla estimates as evidence. And don't assume a price comparison alone is enough — you need to show the properties are physically similar and that the pattern of banding is inconsistent.

Our England Valuation Tribunal Appeal Guide includes a Comparable Properties Log template that structures this analysis for you, plus a 1991 Valuation Evidence Worksheet for documenting indexed sale prices the tribunal will accept.

See more England guides →