CM15 postcode district: Brentwood and around, Essex

CM15 is a postcode district in Essex, with 596 postcodes in use in 3 sectors. It has postcodes in Brentwood, Doddinghurst, Kelvedon Hatch and 1 more place. It is split between 2 councils: Brentwood (594 postcodes) and Epping Forest (2).

Postcodes in use
596
Sectors
3
Councils
2 councils
Places
4 places

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. See all our data sources

Every postcode in CM15, by flood risk

Map of every postcode in CM15, by flood risk Of the 596 postcodes in CM15 that ONS places, 5 have a home or business at high risk, 11 are at low risk at worst and 580 are not on the Environment Agency's at-risk list. Places named: Brentwood, Doddinghurst, Kelvedon Hatch. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 1 km. A12 CM15 0AA: not on the flood risk listCM15 0AD: not on the flood risk listCM15 0AE: not on the flood risk listCM15 0AG: not on the flood risk listCM15 0AH: not on the flood risk listCM15 0AL: not on the flood risk listCM15 0AN: not on the flood risk listCM15 0AP: not on the flood risk listCM15 0AR: not on the flood risk listCM15 0AT: not on the flood risk listCM15 0AU: not on the flood risk listCM15 0AW: not on the flood risk listCM15 0AX: not on the flood risk listCM15 0AZ: not on the flood risk listCM15 0BA: not on the flood risk listCM15 0BB: not on the flood risk listCM15 0BD: not on the flood risk listCM15 0BE: not on the flood risk listCM15 0BG: not on the flood risk listCM15 0BH: not on the flood risk listCM15 0BJ: not on the flood risk listCM15 0BL: not on the flood risk listCM15 0BN: not on the flood risk listCM15 0BP: not on the flood risk listCM15 0BQ: not on the flood risk listCM15 0BS: not on the flood risk listCM15 0BX: not on the flood risk listCM15 0BY: not on the flood risk listCM15 0DB: not on the flood risk listCM15 0DD: not on the flood risk listCM15 0DE: not on the flood risk listCM15 0DF: not on the flood risk listCM15 0DG: not on the flood risk listCM15 0DH: not on the flood risk listCM15 0DJ: not on the flood risk listCM15 0DL: not on the flood risk listCM15 0DN: not on the flood risk listCM15 0DR: not on the flood risk listCM15 0DS: not on the flood risk listCM15 0DT: not on the flood risk listCM15 0DU: not on the flood risk listCM15 0DW: not on the flood risk listCM15 0DX: not on the flood risk listCM15 0DZ: not on the flood risk listCM15 0EA: not on the flood risk listCM15 0EB: not on the flood risk listCM15 0ED: not on the flood risk listCM15 0EE: not on the flood risk listCM15 0EF: not on the flood risk listCM15 0EH: not on the flood risk listCM15 0EJ: not on the flood risk listCM15 0EL: not on the flood risk listCM15 0EN: not on the flood risk listCM15 0EP: not on the flood risk listCM15 0EQ: not on the flood risk listCM15 0ER: not on the flood risk listCM15 0ES: not on the flood risk listCM15 0ET: not on the flood risk listCM15 0EU: not on the flood risk listCM15 0EX: not on the flood risk listCM15 0FA: not on the flood risk listCM15 0FJ: not on the flood risk listCM15 0FN: not on the flood risk listCM15 0FP: not on the flood risk listCM15 0FQ: not on the flood risk listCM15 0FR: not on the flood risk listCM15 0FS: not on the flood risk listCM15 0FT: not on the flood risk listCM15 0FU: not on the flood risk listCM15 0FW: not on the flood risk listCM15 0FY: not on the flood risk listCM15 0GZ: not on the flood risk listCM15 0HA: not on the flood risk listCM15 0HB: not on the flood risk listCM15 0HD: not on the flood risk listCM15 0HE: not on the flood risk listCM15 0HG: not on the flood risk listCM15 0HH: not on the flood risk listCM15 0HJ: not on the flood risk listCM15 0HL: not on the flood risk listCM15 0HN: not on the flood risk listCM15 0HP: not on the flood risk listCM15 0HR: not on the flood risk listCM15 0HT: not on the flood risk listCM15 0HU: not on the flood risk listCM15 0HX: not on the flood risk listCM15 0HZ: not on the flood risk listCM15 0JA: not on the flood risk listCM15 0JB: not on the flood risk listCM15 0JD: not on the flood risk listCM15 0JE: not on the flood risk listCM15 0JF: not on the flood risk listCM15 0JG: not on the flood risk listCM15 0JH: not on the flood risk listCM15 0JJ: not on the flood risk listCM15 0JL: not on the flood risk listCM15 0JN: not on the flood risk listCM15 0JX: not on the flood risk listCM15 0LA: not on the flood risk listCM15 0LB: not on the flood risk listCM15 0LD: not on the flood risk listCM15 0LE: not on the flood risk listCM15 0LG: not on the flood risk listCM15 0LH: not on the flood risk listCM15 0LJ: not on the flood risk listCM15 0LL: not on the flood risk listCM15 0LP: not on the flood risk listCM15 0LS: not on the flood risk listCM15 0LT: not on the flood risk listCM15 0LU: not on the flood risk listCM15 0LX: not on the flood risk listCM15 0NB: not on the flood risk listCM15 0NF: not on the flood risk listCM15 0NG: not on the flood risk listCM15 0NH: not on the flood risk listCM15 0NJ: not on the flood risk listCM15 0NN: not on the flood risk listCM15 0NP: not on the flood risk listCM15 0NQ: not on the flood risk listCM15 0NR: not on the flood risk listCM15 0NS: not on the flood risk listCM15 0NT: not on the flood risk listCM15 0NW: not on the flood risk listCM15 0NX: not on the flood risk listCM15 0NZ: not on the flood risk listCM15 0PA: not on the flood risk listCM15 0PB: not on the flood risk listCM15 0PD: not on the flood risk listCM15 0PE: not on the flood risk listCM15 0PG: not on the flood risk listCM15 0PH: not on the flood risk listCM15 0PJ: not on the flood risk listCM15 0PL: not on the flood risk listCM15 0PN: not on the flood risk listCM15 0PP: not on the flood risk listCM15 0PR: not on the flood risk listCM15 0PS: not on the flood risk listCM15 0PT: not on the flood risk listCM15 0PU: not on the flood risk listCM15 0PX: not on the flood risk listCM15 0PY: not on the flood risk listCM15 0PZ: not on the flood risk listCM15 0QA: not on the flood risk listCM15 0QB: not on the flood risk listCM15 0QD: not on the flood risk listCM15 0QE: not on the flood risk listCM15 0QG: not on the flood risk listCM15 0QH: not on the flood risk listCM15 0QJ: not on the flood risk listCM15 0QL: not on the flood risk listCM15 0QN: not on the flood risk listCM15 0QP: not on the flood risk listCM15 0QQ: not on the flood risk listCM15 0QR: not on the flood risk listCM15 0QS: not on the flood risk listCM15 0QT: not on the flood risk listCM15 0QU: not on the flood risk listCM15 0QX: not on the flood risk listCM15 0QY: not on the flood risk listCM15 0QZ: not on the flood risk listCM15 0RA: not on the flood risk listCM15 0RD: not on the flood risk listCM15 0RE: not on the flood risk listCM15 0RG: not on the flood risk listCM15 0RH: not on the flood risk listCM15 0RJ: not on the flood risk listCM15 0RL: not on the flood risk listCM15 0RN: not on the flood risk listCM15 0RP: not on the flood risk listCM15 0RR: not on the flood risk listCM15 0RS: not on the flood risk listCM15 0RT: not on the flood risk listCM15 0RU: not on the flood risk listCM15 0RX: not on the flood risk listCM15 0RZ: not on the flood risk listCM15 0SB: not on the flood risk listCM15 0SD: not on the flood risk listCM15 0SE: not on the flood risk listCM15 0SF: not on the flood risk listCM15 0SH: not on the flood risk listCM15 0SJ: not on the flood risk listCM15 0SL: not on the flood risk listCM15 0SN: not on the flood risk listCM15 0SR: not on the flood risk listCM15 0SS: not on the flood risk listCM15 0ST: not on the flood risk listCM15 0SU: not on the flood risk listCM15 0SX: not on the flood risk listCM15 0SY: not on the flood risk listCM15 0SZ: not on the flood risk listCM15 0TA: not on the flood risk listCM15 0TB: not on the flood risk listCM15 0TD: not on the flood risk listCM15 0TE: not on the flood risk listCM15 0TH: not on the flood risk listCM15 0TJ: not on the flood risk listCM15 0TL: not on the flood risk listCM15 0TN: not on the flood risk listCM15 0TP: not on the flood risk listCM15 0TS: not on the flood risk listCM15 0TT: not on the flood risk listCM15 0TX: not on the flood risk listCM15 0TZ: not on the flood risk listCM15 0UB: not on the flood risk listCM15 0UD: not on the flood risk listCM15 0UE: not on the flood risk listCM15 0UG: not on the flood risk listCM15 0UH: not on the flood risk listCM15 0UJ: not on the flood risk listCM15 0UT: not on the flood risk listCM15 0XA: not on the flood risk listCM15 0XB: not on the flood risk listCM15 0XD: not on the flood risk listCM15 0XE: not on the flood risk listCM15 0XF: not on the flood risk listCM15 0XG: not on the flood risk listCM15 0XL: not on the flood risk listCM15 8AA: not on the flood risk listCM15 8AB: not on the flood risk listCM15 8AD: not on the flood risk listCM15 8AE: not on the flood risk listCM15 8AJ: not on the flood risk listCM15 8AP: not on the flood risk listCM15 8AQ: not on the flood risk listCM15 8AS: not on the flood risk listCM15 8AT: not on the flood risk listCM15 8AY: not on the flood risk listCM15 8AZ: not on the flood risk listCM15 8BA: not on the flood risk listCM15 8BD: not on the flood risk listCM15 8BE: not on the flood risk listCM15 8BG: not on the flood risk listCM15 8BJ: not on the flood risk listCM15 8BL: not on the flood risk listCM15 8BN: not on the flood risk listCM15 8BP: not on the flood risk listCM15 8BT: not on the flood risk listCM15 8BU: not on the flood risk listCM15 8BW: not on the flood risk listCM15 8BX: not on the flood risk listCM15 8BY: not on the flood risk listCM15 8DA: not on the flood risk listCM15 8DB: not on the flood risk listCM15 8DD: not on the flood risk listCM15 8DE: not on the flood risk listCM15 8DG: not on the flood risk listCM15 8DH: not on the flood risk listCM15 8DJ: not on the flood risk listCM15 8DL: not on the flood risk listCM15 8DN: not on the flood risk listCM15 8DR: not on the flood risk listCM15 8DS: not on the flood risk listCM15 8DT: not on the flood risk listCM15 8DU: not on the flood risk listCM15 8DZ: not on the flood risk listCM15 8EE: not on the flood risk listCM15 8EG: not on the flood risk listCM15 8EH: not on the flood risk listCM15 8EJ: not on the flood risk listCM15 8EN: not on the flood risk listCM15 8ER: not on the flood risk listCM15 8ET: not on the flood risk listCM15 8EU: not on the flood risk listCM15 8EW: not on the flood risk listCM15 8EZ: not on the flood risk listCM15 8FA: not on the flood risk listCM15 8FE: not on the flood risk listCM15 8FF: not on the flood risk listCM15 8FL: not on the flood risk listCM15 8HA: not on the flood risk listCM15 8HD: not on the flood risk listCM15 8HE: not on the flood risk listCM15 8HG: not on the flood risk listCM15 8HH: not on the flood risk listCM15 8HJ: not on the flood risk listCM15 8HN: not on the flood risk listCM15 8HP: not on the flood risk listCM15 8HQ: not on the flood risk listCM15 8HS: not on the flood risk listCM15 8HU: not on the flood risk listCM15 8HW: not on the flood risk listCM15 8HX: not on the flood risk listCM15 8HY: not on the flood risk listCM15 8JA: not on the flood risk listCM15 8JD: not on the flood risk listCM15 8JF: not on the flood risk listCM15 8JJ: not on the flood risk listCM15 8JL: not on the flood risk listCM15 8JN: not on the flood risk listCM15 8JP: not on the flood risk listCM15 8JR: not on the flood risk listCM15 8JS: not on the flood risk listCM15 8JT: not on the flood risk listCM15 8JU: not on the flood risk listCM15 8JZ: not on the flood risk listCM15 8LB: not on the flood risk listCM15 8LD: not on the flood risk listCM15 8LF: not on the flood risk listCM15 8LG: not on the flood risk listCM15 8LH: not on the flood risk listCM15 8LP: not on the flood risk listCM15 8LR: not on the flood risk listCM15 8LS: not on the flood risk listCM15 8LT: not on the flood risk listCM15 8LU: not on the flood risk listCM15 8LZ: not on the flood risk listCM15 8NB: not on the flood risk listCM15 8NF: not on the flood risk listCM15 8NG: not on the flood risk listCM15 8NH: not on the flood risk listCM15 8NJ: not on the flood risk listCM15 8NN: not on the flood risk listCM15 8NQ: not on the flood risk listCM15 8NR: not on the flood risk listCM15 8PA: not on the flood risk listCM15 8PF: not on the flood risk listCM15 8PG: not on the flood risk listCM15 8PN: not on the flood risk listCM15 8PP: not on the flood risk listCM15 8PS: not on the flood risk listCM15 8PT: not on the flood risk listCM15 8PW: not on the flood risk listCM15 8PY: not on the flood risk listCM15 8PZ: not on the flood risk listCM15 8QA: not on the flood risk listCM15 8QD: not on the flood risk listCM15 8QE: not on the flood risk listCM15 8QL: not on the flood risk listCM15 8QN: not on the flood risk listCM15 8QP: not on the flood risk listCM15 8QS: not on the flood risk listCM15 8QT: not on the flood risk listCM15 8QU: not on the flood risk listCM15 8QW: not on the flood risk listCM15 8QX: not on the flood risk listCM15 8QY: not on the flood risk listCM15 8RB: not on the flood risk listCM15 8RD: not on the flood risk listCM15 8RE: not on the flood risk listCM15 8RF: not on the flood risk listCM15 8RG: not on the flood risk listCM15 8RH: not on the flood risk listCM15 8RJ: not on the flood risk listCM15 8RL: not on the flood risk listCM15 8RN: not on the flood risk listCM15 8RQ: not on the flood risk listCM15 8RX: not on the flood risk listCM15 8RY: not on the flood risk listCM15 8SA: not on the flood risk listCM15 8SB: not on the flood risk listCM15 8SD: not on the flood risk listCM15 8TD: not on the flood risk listCM15 8TG: not on the flood risk listCM15 8YQ: not on the flood risk listCM15 9AA: not on the flood risk listCM15 9AB: not on the flood risk listCM15 9AF: not on the flood risk listCM15 9AG: not on the flood risk listCM15 9AH: not on the flood risk listCM15 9AJ: not on the flood risk listCM15 9AL: not on the flood risk listCM15 9AN: not on the flood risk listCM15 9AS: not on the flood risk listCM15 9AT: not on the flood risk listCM15 9AX: not on the flood risk listCM15 9AZ: not on the flood risk listCM15 9BB: not on the flood risk listCM15 9BD: not on the flood risk listCM15 9BE: not on the flood risk listCM15 9BG: not on the flood risk listCM15 9BH: not on the flood risk listCM15 9BJ: not on the flood risk listCM15 9BL: not on the flood risk listCM15 9BN: not on the flood risk listCM15 9BP: not on the flood risk listCM15 9BQ: not on the flood risk listCM15 9BS: not on the flood risk listCM15 9BU: not on the flood risk listCM15 9BW: not on the flood risk listCM15 9BY: not on the flood risk listCM15 9BZ: not on the flood risk listCM15 9DA: not on the flood risk listCM15 9DB: not on the flood risk listCM15 9DD: not on the flood risk listCM15 9DE: not on the flood risk listCM15 9DF: not on the flood risk listCM15 9DG: not on the flood risk listCM15 9DJ: not on the flood risk listCM15 9DL: not on the flood risk listCM15 9DN: not on the flood risk listCM15 9DQ: not on the flood risk listCM15 9DS: not on the flood risk listCM15 9DU: not on the flood risk listCM15 9DW: not on the flood risk listCM15 9DX: not on the flood risk listCM15 9DY: not on the flood risk listCM15 9DZ: not on the flood risk listCM15 9EA: not on the flood risk listCM15 9ED: not on the flood risk listCM15 9EE: not on the flood risk listCM15 9EG: not on the flood risk listCM15 9EH: not on the flood risk listCM15 9EJ: not on the flood risk listCM15 9EL: not on the flood risk listCM15 9EN: not on the flood risk listCM15 9EP: not on the flood risk listCM15 9EQ: not on the flood risk listCM15 9ER: not on the flood risk listCM15 9ES: not on the flood risk listCM15 9ET: not on the flood risk listCM15 9EU: not on the flood risk listCM15 9EX: not on the flood risk listCM15 9EY: not on the flood risk listCM15 9EZ: not on the flood risk listCM15 9FD: not on the flood risk listCM15 9FE: not on the flood risk listCM15 9FF: not on the flood risk listCM15 9FG: not on the flood risk listCM15 9GJ: not on the flood risk listCM15 9GL: not on the flood risk listCM15 9HA: not on the flood risk listCM15 9HD: not on the flood risk listCM15 9HE: not on the flood risk listCM15 9HF: not on the flood risk listCM15 9HG: not on the flood risk listCM15 9HH: not on the flood risk listCM15 9HP: not on the flood risk listCM15 9HR: not on the flood risk listCM15 9HS: not on the flood risk listCM15 9HT: not on the flood risk listCM15 9HU: not on the flood risk listCM15 9HX: not on the flood risk listCM15 9HY: not on the flood risk listCM15 9HZ: not on the flood risk listCM15 9JA: not on the flood risk listCM15 9JB: not on the flood risk listCM15 9JD: not on the flood risk listCM15 9JF: not on the flood risk listCM15 9JG: not on the flood risk listCM15 9JH: not on the flood risk listCM15 9JJ: not on the flood risk listCM15 9JL: not on the flood risk listCM15 9JN: not on the flood risk listCM15 9JP: not on the flood risk listCM15 9JQ: not on the flood risk listCM15 9JR: not on the flood risk listCM15 9JS: not on the flood risk listCM15 9JT: not on the flood risk listCM15 9JU: not on the flood risk listCM15 9JZ: not on the flood risk listCM15 9LB: not on the flood risk listCM15 9LD: not on the flood risk listCM15 9LE: not on the flood risk listCM15 9LH: not on the flood risk listCM15 9LJ: not on the flood risk listCM15 9LL: not on the flood risk listCM15 9LN: not on the flood risk listCM15 9LP: not on the flood risk listCM15 9LR: not on the flood risk listCM15 9LS: not on the flood risk listCM15 9LT: not on the flood risk listCM15 9LU: not on the flood risk listCM15 9LX: not on the flood risk listCM15 9LZ: not on the flood risk listCM15 9NA: not on the flood risk listCM15 9NB: not on the flood risk listCM15 9ND: not on the flood risk listCM15 9NE: not on the flood risk listCM15 9NG: not on the flood risk listCM15 9NH: not on the flood risk listCM15 9NN: not on the flood risk listCM15 9NP: not on the flood risk listCM15 9NR: not on the flood risk listCM15 9NS: not on the flood risk listCM15 9NT: not on the flood risk listCM15 9NU: not on the flood risk listCM15 9NX: not on the flood risk listCM15 9NY: not on the flood risk listCM15 9NZ: not on the flood risk listCM15 9PA: not on the flood risk listCM15 9PB: not on the flood risk listCM15 9PD: not on the flood risk listCM15 9PE: not on the flood risk listCM15 9PH: not on the flood risk listCM15 9PJ: not on the flood risk listCM15 9PL: not on the flood risk listCM15 9PN: not on the flood risk listCM15 9PP: not on the flood risk listCM15 9PR: not on the flood risk listCM15 9PS: not on the flood risk listCM15 9PT: not on the flood risk listCM15 9PU: not on the flood risk listCM15 9PX: not on the flood risk listCM15 9PZ: not on the flood risk listCM15 9QA: not on the flood risk listCM15 9QB: not on the flood risk listCM15 9QD: not on the flood risk listCM15 9QE: not on the flood risk listCM15 9QF: not on the flood risk listCM15 9QG: not on the flood risk listCM15 9QH: not on the flood risk listCM15 9QJ: not on the flood risk listCM15 9QL: not on the flood risk listCM15 9QN: not on the flood risk listCM15 9QP: not on the flood risk listCM15 9QR: not on the flood risk listCM15 9QS: not on the flood risk listCM15 9QU: not on the flood risk listCM15 9QW: not on the flood risk listCM15 9QX: not on the flood risk listCM15 9QY: not on the flood risk listCM15 9QZ: not on the flood risk listCM15 9RA: not on the flood risk listCM15 9RB: not on the flood risk listCM15 9RD: not on the flood risk listCM15 9RE: not on the flood risk listCM15 9RG: not on the flood risk listCM15 9RH: not on the flood risk listCM15 9RJ: not on the flood risk listCM15 9RL: not on the flood risk listCM15 9RN: not on the flood risk listCM15 9RP: not on the flood risk listCM15 9RQ: not on the flood risk listCM15 9RR: not on the flood risk listCM15 9RS: not on the flood risk listCM15 9RX: not on the flood risk listCM15 9RZ: not on the flood risk listCM15 9SA: not on the flood risk listCM15 9SB: not on the flood risk listCM15 9SE: not on the flood risk listCM15 9SG: not on the flood risk listCM15 9SH: not on the flood risk listCM15 9SJ: not on the flood risk listCM15 9SL: not on the flood risk listCM15 9SN: not on the flood risk listCM15 9SP: not on the flood risk listCM15 9SR: not on the flood risk listCM15 9SS: not on the flood risk listCM15 0DA: low flood risk at worstCM15 0FF: low flood risk at worstCM15 0FG: low flood risk at worstCM15 0FH: low flood risk at worstCM15 0NA: low flood risk at worstCM15 0ND: low flood risk at worstCM15 0NE: low flood risk at worstCM15 0SP: low flood risk at worstCM15 8PX: low flood risk at worstCM15 8RU: low flood risk at worstCM15 8SG: low flood risk at worstCM15 0LZ: high flood riskCM15 0SG: high flood riskCM15 0TR: high flood riskCM15 8QF: high flood riskCM15 8RT: high flood risk BrentwoodDoddinghurstKelvedon Hatch Map of every postcode in CM15, by flood risk Of the 596 postcodes in CM15 that ONS places, 5 have a home or business at high risk, 11 are at low risk at worst and 580 are not on the Environment Agency's at-risk list. Places named: Brentwood, Doddinghurst, Kelvedon Hatch. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A129 BrentwoodDoddinghurstKelvedon Hatch
  • A home or business at high risk: 5
  • At medium risk at worst: 0
  • At low risk at worst: 11
  • At very low risk only: 0
  • Not on the at-risk list: 580

Of the 596 postcodes in CM15 that ONS places, 5 have a home or business at high risk, 11 are at low risk at worst and 580 are not on the Environment Agency's at-risk list.

Each mark is a postcode's centre point as ONS gives it, not a building. Press one to see its postcode and open its page. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode.

The middle of its postcodes: latitude 51.6449, longitude 0.3031. Open this area on OpenStreetMap

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; flood risk: Environment Agency, published 6 July 2026; roads, rivers and built-up areas: Contains OS data © Crown copyright and database right 2026. Drawn by us. Street map: Ordnance Survey, OS Open Zoomstack, Open Government Licence v3.0, drawn with MapLibre. How we use them

The postcodes at high risk

Beside each: how many of its homes and businesses the Environment Agency puts at that risk.

What broadband can you get in CM15?

Ofcom reports on 580 of the 596 postcodes in CM15. At 430 of them every home and business can get gigabit broadband, and at 1 some cannot get decent broadband (10 Mbit/s).

Postcodes where every home can get gigabit430 of 580
Postcodes where every home can get superfast548 of 580
Postcodes where some cannot get decent broadband1 of 580

Ofcom gives each postcode's share of homes and businesses, not how many there are, so these count postcodes. Each postcode page has its own figures. A provider's checker answers for one address.

Check one address on Ofcom's checker

Source: Ofcom, Connected Nations, Spring 2026, data for January 2026, Open Government Licence v3.0. How we use it

Is CM15 at risk of flooding?

16 of the 596 postcodes in CM15 have a home or business in an area at risk of flooding from rivers or the sea, the Environment Agency says. At those, it puts 23 homes and businesses in an area at high or medium risk.

Homes and businesses in an area at risk, at 16 of 596 postcodes High: 20Medium: 3Low: 115

High: 3.3% or more a year (1 in 30). Medium: 1% to 3.3% a year. Low: 0.1% to 1% a year. Very low: under 0.1% a year (1 in 1,000). Each band is the chance of flooding in any one year.

Homes and businesses in an area at risk of flooding from rivers or the sea, as the Environment Agency counts them, added up over the postcodes. It is for the land, not each building, and leaves out surface water, groundwater and sewers. Each postcode page has its own figures and its flood warning areas.

Source: Environment Agency, Risk of Flooding from Rivers and Sea (postcodes in areas at risk), published 6 July 2026, Open Government Licence v3.0. How we use it

What do homes sell for in CM15?

Homes in CM15 sold for a typical £550,000 in the 12 months to August 2026, across 311 sales, up 4.8% on the 12 months before, HM Land Registry's figures show.

£550,000 typical price, the 12 months to August 2026
£525,000 12 months to August 2025
▲ up 4.8% on the 12 months before
  • Detached £805,000 123 sales
  • Semi-detached £535,000 95 sales
  • Terraced £410,000 39 sales
  • Flat or maisonette £287,500 54 sales

Each bar is that kind's typical price, against the most expensive kind here.

Standard sales of homes at market value. A typical price is the median, the middle sale. Sales take weeks to be registered, so the last month or two are incomplete. Each postcode page gives the figure for its own postcode sector.

Source: HM Land Registry Price Paid Data, files dated 28 September 2026. Contains HM Land Registry data © Crown copyright and database right 2021. This data is licensed under the Open Government Licence v3.0. How we use it

Postcodes in CM15

Pick a sector, then a postcode. A sector is the district plus the next digit.

UK postcode format explained

Places in CM15

Towns and villages with postcodes in CM15, and how many each has here.

Who covers CM15

How many of the district's postcodes in use fall under each council, constituency and police force area.

Councils

What council am I in?

Constituencies

  • Brentwood and Ongar596

Police force areas

  • Essex596

Next to CM15

"Next to" is by number: the districts before and after CM15 in the CM area.

Check a postcode

Something wrong on this page? Report an error and we will check it against the source.