CM3 1 postcode sector in the CM3 district

CM3 1 is a sector of the CM3 district: every postcode that starts CM3 1. It has 215 postcodes in use.

Not sure what a sector is? UK postcode format explained.

Every postcode in the CM3 1 sector, and which are new since 2020

Map of every postcode in the CM3 1 sector, by new since 2020 Of the 215 postcodes in the CM3 1 sector that ONS places, 6 are new since 2020 and 209 were in use before 2020. Places named: Great Notley. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2 km. A131 CM3 1AA: before 2020CM3 1AB: before 2020CM3 1AD: before 2020CM3 1AE: before 2020CM3 1AF: before 2020CM3 1AG: before 2020CM3 1AH: before 2020CM3 1AJ: before 2020CM3 1AL: before 2020CM3 1AN: before 2020CM3 1AQ: before 2020CM3 1AR: before 2020CM3 1AS: before 2020CM3 1AU: before 2020CM3 1AW: before 2020CM3 1AX: before 2020CM3 1AY: before 2020CM3 1AZ: before 2020CM3 1BA: before 2020CM3 1BD: before 2020CM3 1BE: before 2020CM3 1BG: before 2020CM3 1BJ: before 2020CM3 1BL: before 2020CM3 1BP: before 2020CM3 1BQ: before 2020CM3 1BS: before 2020CM3 1BT: before 2020CM3 1BU: before 2020CM3 1BW: before 2020CM3 1BX: before 2020CM3 1BY: before 2020CM3 1BZ: before 2020CM3 1DB: before 2020CM3 1DD: before 2020CM3 1DE: before 2020CM3 1DF: before 2020CM3 1DG: before 2020CM3 1DH: before 2020CM3 1DP: before 2020CM3 1DR: before 2020CM3 1DS: before 2020CM3 1DT: before 2020CM3 1DZ: before 2020CM3 1EA: before 2020CM3 1EB: before 2020CM3 1ED: before 2020CM3 1EE: before 2020CM3 1EF: before 2020CM3 1EG: before 2020CM3 1EH: before 2020CM3 1EJ: before 2020CM3 1EL: before 2020CM3 1EN: before 2020CM3 1EP: before 2020CM3 1ER: before 2020CM3 1ES: before 2020CM3 1ET: before 2020CM3 1EU: before 2020CM3 1EW: before 2020CM3 1EX: before 2020CM3 1FA: before 2020CM3 1FD: before 2020CM3 1FE: before 2020CM3 1FF: before 2020CM3 1FH: before 2020CM3 1FJ: before 2020CM3 1FL: before 2020CM3 1GS: before 2020CM3 1GT: before 2020CM3 1GU: before 2020CM3 1GX: before 2020CM3 1GY: before 2020CM3 1HA: before 2020CM3 1HB: before 2020CM3 1HE: before 2020CM3 1HF: before 2020CM3 1HG: before 2020CM3 1HH: before 2020CM3 1HL: before 2020CM3 1HN: before 2020CM3 1HP: before 2020CM3 1HQ: before 2020CM3 1HR: before 2020CM3 1HS: before 2020CM3 1HT: before 2020CM3 1HU: before 2020CM3 1HW: before 2020CM3 1HX: before 2020CM3 1HY: before 2020CM3 1HZ: before 2020CM3 1JA: before 2020CM3 1JB: before 2020CM3 1JD: before 2020CM3 1JE: before 2020CM3 1JF: before 2020CM3 1JG: before 2020CM3 1JH: before 2020CM3 1JP: before 2020CM3 1JQ: before 2020CM3 1JR: before 2020CM3 1JS: before 2020CM3 1JW: before 2020CM3 1JY: before 2020CM3 1JZ: before 2020CM3 1LA: before 2020CM3 1LB: before 2020CM3 1LD: before 2020CM3 1LE: before 2020CM3 1LF: before 2020CM3 1LG: before 2020CM3 1LH: before 2020CM3 1LJ: before 2020CM3 1LL: before 2020CM3 1LN: before 2020CM3 1LP: before 2020CM3 1LQ: before 2020CM3 1LW: before 2020CM3 1LX: before 2020CM3 1LY: before 2020CM3 1LZ: before 2020CM3 1NB: before 2020CM3 1ND: before 2020CM3 1NF: before 2020CM3 1NG: before 2020CM3 1NH: before 2020CM3 1NL: before 2020CM3 1NN: before 2020CM3 1NP: before 2020CM3 1NQ: before 2020CM3 1NR: before 2020CM3 1NU: before 2020CM3 1NW: before 2020CM3 1NX: before 2020CM3 1PA: before 2020CM3 1PB: before 2020CM3 1PD: before 2020CM3 1PE: before 2020CM3 1PF: before 2020CM3 1PG: before 2020CM3 1PH: before 2020CM3 1PJ: before 2020CM3 1PL: before 2020CM3 1PN: before 2020CM3 1PP: before 2020CM3 1PQ: before 2020CM3 1PR: before 2020CM3 1PS: before 2020CM3 1PT: before 2020CM3 1PU: before 2020CM3 1PW: before 2020CM3 1PX: before 2020CM3 1PY: before 2020CM3 1PZ: before 2020CM3 1QA: before 2020CM3 1QB: before 2020CM3 1QD: before 2020CM3 1QE: before 2020CM3 1QF: before 2020CM3 1QG: before 2020CM3 1QH: before 2020CM3 1QJ: before 2020CM3 1QL: before 2020CM3 1QN: before 2020CM3 1QQ: before 2020CM3 1QR: before 2020CM3 1QW: before 2020CM3 1QX: before 2020CM3 1RA: before 2020CM3 1RB: before 2020CM3 1RD: before 2020CM3 1RE: before 2020CM3 1RP: before 2020CM3 1RR: before 2020CM3 1RS: before 2020CM3 1RT: before 2020CM3 1RU: before 2020CM3 1RX: before 2020CM3 1SG: before 2020CM3 1SH: before 2020CM3 1TG: before 2020CM3 1FQ: new since 2020CM3 1FS: new since 2020CM3 1FX: new since 2020CM3 1QP: new since 2020CM3 1FT: new since 2020CM3 1FR: new since 2020 Great Notley Map of every postcode in the CM3 1 sector, by new since 2020 Of the 215 postcodes in the CM3 1 sector that ONS places, 6 are new since 2020 and 209 were in use before 2020. Places named: Broomfield and The Walthams, Boreham and The Leighs. Drawn over roads, rivers and built-up areas. North is up; the scale bar is 2.5 km. Broomfield and The WalthamsBoreham and The Leighs
  • New since 2020: 6
  • In use before 2020: 209

Of the 215 postcodes in the CM3 1 sector that ONS places, 6 are new since 2020 and 209 were in use before 2020.

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. New since 2020 means it came into use in January 2020 or later. No boundary is drawn. Where marks overlap, the one first in the key is drawn; the counts include every postcode. Names in italics are council wards: we hold no town or village names here.

Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026, the centre point of each postcode; when each came into use: the same directory; 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 5 newest postcodes

CM3 1FXNovember 2024CM3 1QPMarch 2021CM3 1FSNovember 2020CM3 1FTJuly 2020CM3 1FRFebruary 2020

What do homes sell for in CM3 1?

Homes in CM3 1 sold for a typical £480,000 in the 12 months to August 2026, across 52 sales, down 7% on the 12 months before, HM Land Registry's figures show.

£480,000 typical price, the 12 months to August 2026
£516,250 12 months to August 2025
▼ down 7% on the 12 months before
  • Detached £603,250 26 sales
  • Semi-detached £470,000 15 sales
  • Terraced £377,500 8 sales
  • Flat or maisonette 3 sales, too few to price

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

Standard sales of homes at market value at the postcodes that start CM3 1. A typical price is the median, the middle sale, given from 5 sales or more.

How we work this out: house prices by postcode

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 CM3 1

Pick a postcode to see its council and MP, broadband, flood risk, what homes sell for, council tax, the nearest schools and stations, and crime around it.

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Source: Office for National Statistics (ONS) Postcode Directory, August 2026, loaded 20 October 2026. Postcodes that have ended are not listed. See all our data sources

What council am I in? The council, borough or local authority for a postcode, and the county council where there is one. What ward am I in? The ward for a postcode, with its council, constituency and parish.

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