Cost of Living in CM21
East Hertfordshire
CM21 at a glance
Postcode district (CM21)£521k
Median home price
992
Sales (last 5y)
+87%
vs national median
£171
Est. council tax / mo
8.4/10
Deprivation decile
Figures describe the CM21 postcode district as a whole — a guide to the area, not a valuation of any one home. Prices from HM Land Registry; council tax is an estimate (verify your exact band below).
House prices in CM21
Postcode district (CM21)Median sale price over the last five years by property type, with how each compares to the national median.
| Property type | Median price | Sales (5y) | vs national |
|---|---|---|---|
| Detached | £660,000 | 329 | +£250k |
| Semi-detached | £482,500 | 276 | +£223k |
| Terraced | £380,000 | 186 | +£162k |
| Flat | £225,000 | 240 | −£7k |
Source: HM Land Registry Price Paid Data (OGL v3.0).
Council tax in CM21
Band D
Estimated band
£2,050
Estimated annual cost
£171
Monthly (approx)
Council-tax band is an estimate, not a verified per-address figure. Check the exact band on GOV.UK.
Affordability & area context
Postcode district (CM21)CM21 sits at an average deprivation decile of 8.4 out of 10 (among the least deprived areas in England), based on the 7 neighbourhoods (LSOAs) it covers in the English Indices of Deprivation 2025. Homes here typically sell for 87% more than the national median.