CM23 3LZ
PostcodeA postcode in East Hertfordshire 008C, Bishop's Stortford South ward, East Hertfordshire.
This report describes the area around CM23 3LZ, not any one home. Each figure is shown at the level it was published: the postcode, a 1 km square, the neighbourhood or the whole council, as its tag says.
Around CM23 3LZ
- 15 crimes within 500 mAugust, up 15% on JulyEast Hertfordshire 008C: 36 a year per 1,000 peopleMap point
- Bishops Stortford, 830 mAbout 10 minutes on footExact point
- 2 schools within 800 mNearest is 300 m awayExact point
- No property in CM23 3LZ listed at risk of floodingFrom rivers or the sea, with flood defences, in the Environment Agency's assessmentPostcode
- England’s least deprived 20%This neighbourhood, East Hertfordshire 008CNeighbourhood
- £457,417 average priceFor the whole of East Hertfordshire, July 2026Council
- 1 GP practice within 1 kmNearest is 810 m awayPostcode
- 4 supermarkets within 1 kmNearest is 260 m awayExact point
- Gigabit broadband for every home and business at CM23 3LZSuperfast for 100%. What can be ordered, January 2026Postcode
- Low road and rail noise at CM23 3LZRoad 53 dB, rail 41 dB (Lden, modelled for 2021)Postcode
- In a radon Affected Area, class 2 of 61% to 3% of homes in this 1 km square are estimated to be at or above the radon Action Level1 km grid
- 11.0 µg/m³ nitrogen dioxideModelled yearly average for this 1 km square, 20251 km grid
Schools near CM23 3LZ
Within 2 km, nearest first| School | Distance | Latest Ofsted outcome |
|---|---|---|
| Thorley Hill Primary School Primary. 87% met the expected standard at KS2 (2024/25) | 300 m 4 minutes on foot | School remains Good, March 2024 |
| Richard Whittington Primary School Primary. 80% met the expected standard at KS2 (2024/25) | 660 m 8 minutes on foot | School remains Good, November 2019 |
| Thorn Grove Primary School Primary. 60% met the expected standard at KS2 (2024/25) | 1 km 12 minutes on foot | Standards maintained, October 2024 |
| St Michael's Church of England Primary School Primary. 68% met the expected standard at KS2 (2024/25) | 1 km 13 minutes on foot | Standards maintained, January 2025 |
| White Trees Independent School Special | 1.1 km 14 minutes on foot | No outcome in Ofsted's file |
| The Hertfordshire & Essex High School and Science College Secondary. Attainment 8 of 62.0 (2025/26, provisional) | 1.1 km 14 minutes on foot | Outstanding (overall), November 2023 |
| Windhill21 Primary. 70% met the expected standard at KS2 (2024/25) | 1.1 km 14 minutes on foot | Standards maintained, March 2025 |
| The Bishop's Stortford High School Secondary. Attainment 8 of 58.8 (2025/26, provisional) | 1.2 km 15 minutes on foot | School remains Outstanding, May 2023 |
Distances are in a straight line. Councils and schools set catchments and admissions, which Open Index doesn’t map: the council’s schools pages. Ofsted outcomes are as published, each with its date; grades under different frameworks can’t be compared.
Recent sales near CM23 3LZ
Latest sale at each postcode- £545,000Thorley Hill, CM23 3LZAugust 2024, detached, established, freehold10 m
- £725,000Marlborough Close, CM23 3NTSeptember 2023, detached, established, freehold60 m
- £770,000Thorley Hill, CM23 3NESeptember 2023, detached, established, freehold70 m
- £457,500Nelson Road, CM23 3LHSeptember 2025, semi-detached, established, freehold140 m
- £255,000Bentley Close, CM23 3JZOctober 2025, flat or maisonette, established, leasehold140 m
- £460,000Mulberry Court, CM23 3JWMarch 2025, terraced, established, freehold160 m
- £680,000Wilson Close, CM23 3USNovember 2024, detached, established, freehold170 m
- £500,000London Road, CM23 3LQJune 2025, detached, established, freehold190 m
HM Land Registry sales at nearby postcodes, by street and postcode only, never a house number. Sales take weeks to be registered. Every sale on the map
Within 1 km of CM23 3LZ
In a straight lineStations
- Bishops Stortford10 minutes on foot830 m
GP practices
- SOUTH STREET SURGERY810 m
Pharmacies
- TRINITY PHARMACY820 m
Dental practices
- SOUTH STREET (DENTAL SURGERY)820 m
- THE DENTIST990 m
Supermarkets
- Little Waitrose Shell ThorleyWaitrose260 m
- Tesco Havers Ln ExpressTesco500 m
- Co-op Bishop's StortfordEast of England Co-operative840 m
- Aldi Hockerill Bishop's StortfordAldi920 m
The neighbourhood: East Hertfordshire 008C
Everything about East Hertfordshire 008CThe postcode district: CM23
Everything about CM23Your MP
- Josh DeanLabourMP for Hertford and Stortford
As of , from the UK Parliament Members API. Contains Parliamentary information licensed under the Open Parliament Licence v3.0. Source: UK Parliament, Members API.
Where these figures come from
- Street-level crimeAugust 2026Map point
- Rail and Tube stations2024/25Exact point
- SchoolsExact point
- Flood risk by postcodeJune 2026Postcode
- English Indices of Deprivation 20252025Neighbourhood
- Average house priceJuly 2026Council
- GP practicesPostcode
- SupermarketsExact point
- Broadband by postcodeJanuary 2026Postcode
- Road and rail noise by postcode2021Postcode
- Radon potential1 km grid
- Nitrogen dioxide (NO2)20251 km grid
Counts, distances and walking times are worked out by Open Index from each layer’s published points and outlines, in a straight line from the postcode’s centre. Street names © OpenStreetMap contributors.