Tools

Flood risk checker

Search a postcode or postcode area against the current live flood-risk postcode summary seam.

Source: Flood risk postcode summary. Coverage: Live flood summary rows matched postcode area CM3. Treat the result as a postcode geometry signal rather than a property-specific verdict.. Freshness: Row refresh date unavailable in current public seam. Matches: 25.

Postcode	Area	Risk level	Feature summary	Flood zones	Planning note
CM3 1AA	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AB	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AD	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AE	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AF	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AG	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AH	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AJ	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AL	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AN	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AP	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AQ	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AR	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AS	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AT	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AU	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AW	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AX	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AY	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1AZ	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1BA	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1BD	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1BE	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1BG	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.
CM3 1BJ	Chelmsford	No direct flood match	No flood feature matches in the current postcode geometry seam.	Zone detail unavailable	Treat this as an early screening signal only and still check the official flood service before you commit.

Known caveats

Flood summaries are postcode-geometry signals only and do not replace a property-specific flood assessment.
The current public flood seam does not expose a trustworthy row refresh timestamp, so freshness is still partial here.
Use the official long-term flood risk service before you rule a postcode in or out on this tool alone.

Flood risk checker

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