| Postcode | CM1 1BY | 
|---|---|
| Post Town | Chelmsford | 
| Nearest station | Chelmsford (0 km) | 
| Bus stops | YMCA (W) Station (SW) Station (NE) Careers Office (SE) Railway Street Car Park (NW) Anglia Ruskin University (N) | 
| Roads in this postcode | |
| Number of UPRNs | 71 View | 
| Known addresses | 14 Dunn Side, Chelmsford 22 Dunn Side, Chelmsford 24 Dunn Side, Chelmsford 26 Dunn Side, Chelmsford 28 Dunn Side, Chelmsford 38 Dunn Side, Chelmsford 40 Dunn Side, Chelmsford 42 Dunn Side, Chelmsford 44 Dunn Side, Chelmsford 46 Dunn Side, Chelmsford 48 Dunn Side, Chelmsford 50 Dunn Side, Chelmsford 52 Dunn Side, Chelmsford 54 Dunn Side, Chelmsford 56 Dunn Side, Chelmsford 58 Dunn Side, Chelmsford 60 Dunn Side, Chelmsford 62 Dunn Side, Chelmsford 64 Dunn Side, Chelmsford 66 Dunn Side, Chelmsford 68 Dunn Side, Chelmsford 70 Dunn Side, Chelmsford 72 Dunn Side, Chelmsford 74 Dunn Side, Chelmsford 76 Dunn Side, Chelmsford 78 Dunn Side, Chelmsford 80 Dunn Side, Chelmsford 82 Dunn Side, Chelmsford 84 Dunn Side, Chelmsford 86 Dunn Side, Chelmsford 88 Dunn Side, Chelmsford 90 Dunn Side, Chelmsford 92 Dunn Side, Chelmsford 94 Dunn Side, Chelmsford 96 Dunn Side, Chelmsford 98 Dunn Side, Chelmsford 100 Dunn Side, Chelmsford 102 Dunn Side, Chelmsford 104 Dunn Side, Chelmsford 106 Dunn Side, Chelmsford 108 Dunn Side, Chelmsford 110 Dunn Side, Chelmsford 112 Dunn Side, Chelmsford 114 Dunn Side, Chelmsford 116 Dunn Side, Chelmsford 118 Dunn Side, Chelmsford 120 Dunn Side, Chelmsford 122 Dunn Side, Chelmsford 124 Dunn Side, Chelmsford 126 Dunn Side, Chelmsford | 
| Main property type | Flat | 
| Businesses | 
| Latitude | 51.738658 | |
|---|---|---|
| Longitude | 0.471315 | |
| Easting | 570733 | |
| Northing | 207329 | |
| Grid reference | TL707073 | |
| UTM reference | 31U 325408 5734997 | |
| what3words | speeds.rocket.taped | |
| FixPhrase | crinkly magnitude skintight unthread | |
| Plus code | 9F32PFQC+FG | |
| Altitude | 33 metres (108 feet) | |
| Sunrise (today) | 6:51 | |
| Sunset (today) | 16:34 | |
| Distance away | ||
| Distance to sea | 15.2 KMs (9.4 miles) | 
| Parish | Chelmsford, unparished area | E43000285 | 
|---|---|---|
| Ward | Marconi | E05004106 | 
| Local Authority District | Chelmsford | E07000070 | 
| County Electoral Division | Chelmsford West | E58000422 | 
| Local Authority | Essex | E10000012 | 
| County | Essex | E10000012 | 
| Constituency (2024) | Chelmsford | E14001159 | 
| MP | Marie Goldman | Liberal Democrat | 
| Police force | Essex | |
| Water company | Anglian Water | |
| NUTS/ITL 3 | Heart of Essex | |
| NUTS/ITL 2 | Essex | |
| NUTS/ITL 1 | East of England | |
| Country | England | E92000001 | 
| Date introduced | March 2015 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
|---|---|---|
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Chelmsford | E63011563 | 
| Census output area (2021) | E00180494 | |
| Census output area (2011) | 2A3 | |
| Lower layer super output area (2021) | Chelmsford 022A | E01034089 | 
| Lower layer super output area (2011) | Chelmsford 010A | E01021574 | 
| Middle layer super output area (2021) | Central Chelmsford East | E02006978 | 
| Middle layer super output area (2011) | Central Chelmsford | E02004494 | 
| Travel to work area | Chelmsford | E30000188 | 
| Average property price in Chelmsford | £410,515 | 
|---|---|
| Annual change | 1.9% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 58 Dunn Side, Chelmsford | Flat (leasehold) | Jun 2025 | £316,000 | 
| New build flat (leasehold) | Apr 2016 | £267,995 | |
| 106 Dunn Side, Chelmsford | Flat (leasehold) | May 2025 | £232,000 | 
| New build flat (leasehold) | May 2016 | £209,995 | |
| 108 Dunn Side, Chelmsford | Flat (leasehold) | Feb 2025 | £325,000 | 
| New build flat (leasehold) | May 2016 | £292,995 | |
| 42 Dunn Side, Chelmsford | Flat (leasehold) | Jul 2024 | £290,000 | 
| New build flat (leasehold) | Apr 2016 | £269,995 | |
| 66 Dunn Side, Chelmsford | Flat (leasehold) | Jan 2024 | £288,000 | 
| New build flat (leasehold) | May 2016 | £285,995 | |
| 26 Dunn Side, Chelmsford | Terraced (freehold) | Nov 2023 | £529,700 | 
| New build terraced (freehold) | Jun 2015 | £429,995 | |
| 110 Dunn Side, Chelmsford | Flat (leasehold) | Oct 2023 | £293,000 | 
| New build flat (leasehold) | Apr 2016 | £285,995 | |
| 92 Dunn Side, Chelmsford | Flat (leasehold) | Oct 2023 | £291,000 | 
| New build flat (leasehold) | May 2016 | £278,995 | |
| 82 Dunn Side, Chelmsford | Flat (leasehold) | Sep 2023 | £232,500 | 
| New build flat (leasehold) | May 2016 | £203,995 | |
| 94 Dunn Side, Chelmsford | Flat (leasehold) | Sep 2023 | £305,500 | 
| New build flat (leasehold) | May 2016 | £278,995 |