Merton property data: prices, flood risk & energy ratings

Merton has 55,230 recorded homes. 9.46% of recorded homes with a reading have medium or high mapped surface-water likelihood on the surrounding land.

Average house price

£623,791

Rank 12 of 317 (highest first)

2,006 sales in the 12 months to Jun 2026.

UK HPI · Aug 2026

Annual house price change

+0.10%

Rank 190 of 317 (highest first)

Change from the same month a year earlier.

UK HPI · Aug 2026

Medium / high surface-water map bands around homes

9.46%

Rank 33 of 296 (highest first) · in England

3,723 / 39,334 homes with a reading

Environment Agency · Jun 2026

EPC E–G ratings

13.88%

Rank 187 of 318 (highest first)

5,456 / 39,302 homes with a rating

EPC · Nov 2026

These figures cover recorded homes with known facts, not every dwelling; mapped land risk is not a history of indoor flooding, old EPCs may have expired, and an area price is not a home valuation.

Postcode districts with the highest surface-water shares

Homes within Merton
District	Medium / high	Known homes
SW18	35.10%	86 / 245
SW20	19.60%	1,260 / 6,428
SW16	9.94%	124 / 1,247
CR4	8.86%	773 / 8,721
SM4	7.38%	449 / 6,082
SW19	6.63%	946 / 14,266
KT3	3.76%	47 / 1,249
SW17	3.53%	34 / 964

Environment Agency · Jun 2026

Postcode districts with the highest EPC E–G shares

Homes within Merton
District	EPC E–G	Known ratings
KT3	16.03%	200 / 1,248
SW20	15.55%	999 / 6,426
SM4	15.36%	934 / 6,080
SW19	14.52%	2,069 / 14,248
CR7	12.84%	14 / 109
CR4	11.67%	1,017 / 8,715
SW16	10.26%	128 / 1,247
SW18	9.43%	23 / 244

EPC · Nov 2026

Checked Nov 2026 · Sources

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