CM23 postcode
Broadband in CM23 4BB
Sawbridgeworth, East Hertfordshire
Standard broadband is the main option at this postcode.
Compare Broadband Deals →Free, independent comparison · Ofcom verified data · Updated 23 March 2026
Flood Risk
Medium
Fibre (FTTP)
No
Best speed
Data pending
Speed Calculator
Adjust the options below to see how much broadband speed your household needs.
HD uses ~5 Mbps per person. 4K uses ~25 Mbps.
Each person on calls needs around 10 Mbps.
Competitive gaming needs low latency as much as raw speed.
Cameras, thermostats, speakers and similar devices each use a few Mbps.
Your household needs approximately 14 Mbps. We don't have speed data for CM23 4BB yet.
Speed Test
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Broadband availability
Source: Ofcom Connected Nations 2025 (Jul 2025)
| Technology | Available | Coverage | Typical Speed |
|---|---|---|---|
| Standard (ADSL) | 0% | 0% | 10-20 Mbps |
| Superfast (30+ Mbps) | 0% | 0% | 30-80 Mbps |
| Ultrafast (100+ Mbps) | 0% | 0% | 100-300 Mbps |
| Full Fibre (FTTP) | 0% | 0% | 300-900 Mbps |
| Gigabit | 0% | 0% | 900-1,000 Mbps |
Speed Distribution at CM23 4BB
Source: Ofcom Connected Nations 2025
Mobile coverage
4G & 5G coverage · Ofcom Connected Nations 2025
4G Outdoor
4G Indoor
5G Outdoor
Networks with 4G
Schools nearby
Nearest schools within 5 miles · Ofsted ratings as at Jan 2026
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Flood risk
🟠
Flood risk: Medium
This postcode is in undefined — medium risk of flooding from rivers and sea.
Flood Zone
Risk Level
Medium
Air quality
Particulate matter & nitrogen dioxide levels
air quality
Air quality data not available.
WHO guideline: 15 μg/m³
WHO guideline: 45 μg/m³
WHO guideline: 25 μg/m³
Transport links
Nearest train stations and towns
Nearest train stations
No train stations found within 15 miles
Council tax bands
Band distribution for East Hertfordshire
Most common: Band
Annual council tax estimates for , 2024/25
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Check Deals →Living near CM23 4BB
This is the area guide for CM23 4BB, located in Sawbridgeworth (East Hertfordshire). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.
Superfast broadband (30 Mbps+) coverage at CM23 4BB stands at 0%. That is below the UK average of 93%.
The speed distribution at CM23 4BB tells a more detailed story than headline figures alone. 100% of connections fall in the 10 to 30 Mbps range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls.
Here is how the broadband at CM23 4BB maps against common household needs. With no superfast coverage, streaming is limited. Standard definition video may work, but HD and 4K are unlikely to run smoothly. Downloading large files will take significantly longer than average. Limited superfast coverage means remote workers should test their connection carefully. Video calls may drop or pixelate. A mobile hotspot can serve as a backup.
FWA broadband has not reached CM23 4BB yet. Satellite services like Starlink or 4G home broadband routers can fill the gap where fixed-line options are limited.
The USO guarantees every UK home at least 10 Mbps. At CM23 4BB, 0% of properties do not meet this threshold. Every property here meets the minimum standard. That is not the case everywhere. Next-generation access (NGA) reaches 100% of the area. NGA typically means speeds of 24 Mbps or above.
Flood risk at CM23 4BB is rated Medium. Check Environment Agency flood maps for detailed information. Specialist flood insurance may be needed.
The three most common bands are D (25%), C (20%), E (20%). Band D corresponds to 1991 property values of £68,001 to £88,000. Current values are typically much higher. The spread across mid-range bands suggests a varied housing stock.
4G outdoor coverage at CM23 4BB reaches 95%. Indoor 4G drops to 85%. Some signal loss indoors is normal. Most calls and data should still work inside. Coverage data covers EE, O2, Three, Vodafone. Check each operator individually, as coverage varies by network.
Suitability scores for CM23 4BB: remote working 50/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
CM23 4BB falls within the East Hertfordshire local authority area. The immediate area is Sawbridgeworth, a distinct community within the wider district. The CM23 postcode area contains 1097 postcodes on this site. Superfast broadband across CM23 ranges from 0% to 100%.
Broadband availability varies by provider and by property. At CM23 4BB, check individual coverage tools from BT, Sky, Virgin Media, and local operators. If fibre is unavailable, consider 4G home broadband or satellite as alternatives. Speeds may still be adequate for most uses. Compare contract lengths, total costs over the term, and exit fees. The cheapest monthly rate is not always the best deal.
Every part of Sawbridgeworth has its own feel. This data gives you the factual starting point. A visit fills in the rest.
What does all of this mean for someone considering CM23 4BB? Broadband is the main concern at CM23 4BB. With no superfast coverage, check what alternatives exist before committing. 4G home broadband, satellite, or community fibre schemes may fill the gap. East Hertfordshire as a local authority area has its own planning priorities, council services, and infrastructure investment plans. Check the council website for the latest. The data covers what can be measured. Sawbridgeworth has its own character that numbers alone cannot capture. Use these figures as a filter, then visit to get the full picture.
Data sources include Ofcom (broadband and mobile), Land Registry (house prices), Police.uk (crime), Ofsted (schools), Environment Agency (flood risk), and Open-Meteo (air quality). Council tax data comes from the Valuation Office Agency. EPC data is from DLUHC. Transport data uses NaPTAN. Speed distribution figures are from Ofcom Connected Nations. All figures are the latest available at the time of writing.
Before making a decision about CM23 4BB, visit in person. Check the commute at rush hour. Try the mobile signal indoors. Look at local shops and green spaces. Ask about broadband reliability, not just speed. Data sets the scene, but real life fills in the gaps.
CM23 4BB in Sawbridgeworth: broadband, house prices, crime, schools, and more. All from verified sources. Run a speed test above for a live reading. Compare with nearby postcodes to see how this area stacks up against its neighbours.
More local data is being added for this postcode
This page already has postcode-specific content, and more data-backed sections will appear as the remaining local datasets finish processing.
Frequently asked questions about CM23 4BB
What are the broadband speeds available at CM23 4BB?
Broadband is available at CM23 4BB. Contact local providers for specific speed information.
What is the average house price near CM23 4BB?
No recent house price data is available for CM23 4BB.
What is the flood risk for properties at CM23 4BB?
CM23 4BB has a Medium flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the CM23 4BB area?
School data for CM23 4BB is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in CM23 4BB compare to other areas?
Crime data for this area is being updated.
How suitable is CM23 4BB for remote working?
CM23 4BB scores 50/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at CM23 4BB?
4G outdoor coverage at CM23 4BB is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near CM23 4BB?
EPC data for CM23 4BB is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at CM23 4BB?
Council tax band information for CM23 4BB is being updated.
How accessible are GP surgeries near CM23 4BB?
GP surgery data for CM23 4BB is being updated. Check NHS.uk for the latest.
What transport links are available near CM23 4BB?
Transport data for CM23 4BB is being updated.
Is CM23 4BB a suitable area for families?
CM23 4BB scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at CM23 4BB?
Air quality data for CM23 4BB is being updated.
How far is the nearest EV charging point from CM23 4BB?
EV charging data for CM23 4BB is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at CM23 4BB?
Full fibre availability at CM23 4BB is being updated. Check Openreach for the latest rollout status.
Area suitability scores
CM23 4BBRemote Worker
50Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.
Family
50Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.
Value for Money
50Based on broadband quality relative to average house price in the area.
Map
Area info
Parish
Sawbridgeworth
District
East Hertfordshire
Region
Constituency
LSOA
E01023499
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