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Does CM15 flood?

Yes — parts of the CM15 district carry real flood risk: 5 of its 16 at-risk postcodes reach the Environment Agency's High likelihood band. The CM15 postcode district covers Blackmore & Doddinghurst, Shenfield, Ingatestone, Fryerning & Mountnessing, close to Mountnessing, Billericay, Harold Wood, and surrounding villages in parts of Essex and Greater London.

16 postcodes in the CM15 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 5 high, 11 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

Free preview first · full report £19

Which CM15 postcodes are at risk?

CM15 0LZ up to High CM15 0SG up to High CM15 0TR up to High CM15 8QF up to High CM15 8RT up to High CM15 0DA up to Low CM15 0FF up to Low CM15 0FG up to Low CM15 0FH up to Low CM15 0NA up to Low CM15 0ND up to Low CM15 0NE up to Low CM15 0SP up to Low CM15 8PX up to Low CM15 8RU up to Low CM15 8SG up to Low

Rivers and flooding history near CM15

The rivers that matter here, each monitored live on FloodRadar:

206 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (34 at warning level or above), most recently 19 February 2026. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in CM15? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

CM14 CM16 CM13 CM17 CM12 CM18 CM11 CM19

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064.