CM3 postcode

Broadband in CM3 1EQ

Great Waltham, Chelmsford

Standard broadband is the main option at this postcode.

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Free, independent comparison · Ofcom verified data · Updated 3 March 2026

Flood Risk

Low

Fibre (FTTP)

No

Best speed

Data pending

Reviewed by Rex BlackwellData last verified: 3 March 2026

Speed Calculator

Adjust the options below to see how much broadband speed your household needs.

2
18

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.

Estimated speed needed14 Mbps

Your household needs approximately 14 Mbps. We don't have speed data for CM3 1EQ yet.

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Speed Test

Check your current download speed and see how it compares to what is available at CM3 1EQ.

The test downloads a 2 MB file from our server and measures how long it takes.

This test measures download speed only. Results vary depending on network conditions.

Broadband availability

Source: Ofcom Connected Nations 2025 (Jul 2025)

TechnologyAvailableCoverageTypical 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)N/A
N/A
300-900 Mbps
Gigabit0%
0%
900-1,000 Mbps

Speed Distribution at CM3 1EQ

2–5 Mbps (100%)

Source: Ofcom Connected Nations 2025

Mobile coverage

4G & 5G coverage · Ofcom Connected Nations 2025

4G Outdoor

95%

4G Indoor

85%

5G Outdoor

%

Networks with 4G

EEO2ThreeVodafone
Ofcom Connected Nations 2025

Schools nearby

Nearest schools within 5 miles · Ofsted ratings as at Jan 2026

Schools data is currently unavailable.

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Flood risk

🟡

Flood risk: Low

This postcode is in undefined — low risk of flooding from rivers and sea.

Flood Zone

Risk Level

Low

Environment Agency

Air quality

Particulate matter & nitrogen dioxide levels

air quality

Air quality data not available.

PM2.5 (fine particles) μg/m³

WHO guideline: 15 μg/m³

PM10 (coarse particles) μg/m³

WHO guideline: 45 μg/m³

NO₂ (nitrogen dioxide) μg/m³

WHO guideline: 25 μg/m³

DEFRA UK-AIR · Guidelines: WHO 2021

Transport links

Nearest train stations and towns

Nearest train stations

No train stations found within 15 miles

Network Rail / National Rail · Straight-line distances

Council tax bands

Band distribution for Chelmsford

Most common: Band

A
5%£1,381
B
10%£1,611
C
20%£1,841
D
25%£2,071
E
20%£2,531
F
10%£2,991
G
8%£3,452
H
2%£4,142

Annual council tax estimates for , 2024/25

VOA (Valuation Office Agency)

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Living near CM3 1EQ

This is the area guide for CM3 1EQ, located in Great Waltham (Chelmsford). 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 CM3 1EQ stands at 0%. That is below the UK average of 93%.

Here is how broadband speeds break down across premises at CM3 1EQ. 100% of connections fall in the 2 to 5 Mbps range. 100% of premises get less than 5 Mbps. That is not enough for reliable video calls or streaming.

Here is how the broadband at CM3 1EQ 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. The concentration of slow connections here is significant. For households that depend on the internet, checking real speeds before moving is essential. Satellite broadband via Starlink is worth considering.

FWA broadband has not reached CM3 1EQ 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 CM3 1EQ, 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 CM3 1EQ is rated Low. Minor precautions may be worth considering. Check with insurers about any loading on premiums.

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 CM3 1EQ 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 CM3 1EQ: remote working 50/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

The local authority for CM3 1EQ is Chelmsford. The immediate area is Great Waltham, a distinct community within the wider district. The CM3 postcode area contains 1558 postcodes on this site. Superfast broadband across CM3 ranges from 0% to 100%.

How does CM3 1EQ compare to its neighbours? CM3 1EH (0.02 miles, great-waltham) has 0% superfast coverage and 0% gigabit.

Broadband availability varies by provider and by property. At CM3 1EQ, 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.

Great Waltham offers a mix of residential properties and local amenities. The character of any area is best judged in person.

What does all of this mean for someone considering CM3 1EQ? Broadband is the main concern at CM3 1EQ. With no superfast coverage, check what alternatives exist before committing. 4G home broadband, satellite, or community fibre schemes may fill the gap. Chelmsford 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. Great Waltham 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.

Data is a starting point for Great Waltham. Walk the streets at different times. Test your mobile signal. Check parking, noise levels, and the feel of the neighbourhood. Run a speed test on the actual connection. Some things only a visit can reveal.

CM3 1EQ in Great Waltham: 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 CM3 1EQ

What are the broadband speeds available at CM3 1EQ?

Broadband is available at CM3 1EQ. Contact local providers for specific speed information.

What is the average house price near CM3 1EQ?

No recent house price data is available for CM3 1EQ.

What is the flood risk for properties at CM3 1EQ?

CM3 1EQ has a Low flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the CM3 1EQ area?

School data for CM3 1EQ is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in CM3 1EQ compare to other areas?

Crime data for this area is being updated.

How suitable is CM3 1EQ for remote working?

CM3 1EQ scores 50/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at CM3 1EQ?

4G outdoor coverage at CM3 1EQ is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near CM3 1EQ?

EPC data for CM3 1EQ is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at CM3 1EQ?

Council tax band information for CM3 1EQ is being updated.

How accessible are GP surgeries near CM3 1EQ?

GP surgery data for CM3 1EQ is being updated. Check NHS.uk for the latest.

What transport links are available near CM3 1EQ?

Transport data for CM3 1EQ is being updated.

Is CM3 1EQ a suitable area for families?

CM3 1EQ scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at CM3 1EQ?

Air quality data for CM3 1EQ is being updated.

How far is the nearest EV charging point from CM3 1EQ?

EV charging data for CM3 1EQ is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at CM3 1EQ?

Full fibre availability at CM3 1EQ is being updated. Check Openreach for the latest rollout status.

Area suitability scores

CM3 1EQ

Remote Worker

50

Based on superfast broadband coverage, FTTP %, and 4G mobile outdoor coverage.

Family

50

Based on Ofsted school ratings, crime rate, flood risk, and GP surgery proximity.

Value for Money

50

Based on broadband quality relative to average house price in the area.

Map

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Area info

Parish

Great Waltham

District

Chelmsford

Region

Constituency

LSOA

E01021540

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