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Postcode report

CM1 1AU — Chelmsford

Sold prices, broadband, crime and local data for the CM1 1AU postcode, UK.

CM1 1AU is a postcode in Chelmsford, UK, in the CM1 district. HM Land Registry records 15 recent sales at this postcode (see below). Superfast broadband reaches 100% of premises here and gigabit 100%.

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Sold house prices at CM1 1AU

DatePriceAddressType
30 Apr 2026£325,0003 Cunard SquareFlat
6 Jun 2025£317,0003 Cunard SquareFlat
8 Apr 2025£330,0003 Cunard SquareFlat
31 Oct 2024£250,0003 Cunard SquareFlat
29 Oct 2024£250,0003 Cunard SquareFlat
15 Oct 2024£250,0003 Cunard SquareFlat
12 Jul 2024£275,0003 Cunard SquareFlat
14 Jun 2024£280,0003 Cunard SquareFlat
10 Jun 2024£245,0003 Cunard SquareFlat
22 Apr 2024£270,0003 Cunard SquareFlat
24 Oct 2023£337,5003 Cunard SquareFlat
31 Jul 2023£275,0003 Cunard SquareFlat
10 Feb 2023£335,0003 Cunard SquareFlat
9 Dec 2022£240,0003 Cunard SquareFlat
30 Nov 2022£347,5003 Cunard SquareFlat

Broadband at CM1 1AU

Superfast (30Mb+)

100%

Gigabit-capable

100%

Median download

Median upload

Figures are Ofcom availability data for this exact postcode. Use the checker above for a live lookup including mobile signal on all four networks.

Energy performance certificates at CM1 1AU

30 EPCs are registered at this postcode (England & Wales register, certificates lodged since 2012; older ones may have expired or been replaced).

PropertyRatingRegistered
FLAT 38Band BApr 2021
Flat 65Band BAug 2018
Flat 71Band BAug 2018
Flat 77Band BAug 2018
Flat 74Band CAug 2018
Flat 75Band CAug 2018
Flat 78Band BAug 2018
Flat 76Band BAug 2018
Flat 73Band BAug 2018
Flat 72Band BAug 2018
Flat 55Band BAug 2018
Flat 61Band BJul 2018
Flat 66Band BJul 2018
Flat 67Band BJul 2018
Flat 64Band BJul 2018

Source: MHCLG Energy Performance of Buildings Data. Typical ratings for the wider district are on the CM1 area report.

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Contains HM Land Registry data © Crown copyright and database right 2026; crime data from police.uk; broadband data from Ofcom Connected Nations — Open Government Licence v3.0.

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