CM23 postcode

Broadband in CM23 1HH

Farnham, Uttlesford

Standard broadband is the main option at this postcode.

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Free, independent comparison · Ofcom verified data · Updated 29 March 2026

Flood Risk

Medium

Fibre (FTTP)

No

Best speed

Data pending

Reviewed by Rex BlackwellData last verified: 29 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 CM23 1HH yet.

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Speed Test

Check your current download speed and see how it compares to what is available at CM23 1HH.

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)0%
0%
300-900 Mbps
Gigabit0%
0%
900-1,000 Mbps

Speed Distribution at CM23 1HH

5–10 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: Medium

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

Flood Zone

Risk Level

Medium

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 Uttlesford

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 CM23 1HH

Farnham is home to CM23 1HH. Whether you live here or plan to move, the data below paints a clear picture. Broadband, schools, crime, house prices, and local services all follow. The numbers speak for themselves.

Superfast coverage here stands at 0%. Nationally, 93% of UK premises have access. Some properties may struggle with speed.

The speed distribution at CM23 1HH tells a more detailed story than headline figures alone. 100% of connections fall in the 5 to 10 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 1HH 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 1HH 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 1HH, 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 1HH 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 1HH 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 1HH: remote working 50/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

CM23 1HH falls within the Uttlesford local authority area. The immediate area is Farnham, 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%.

How does CM23 1HH compare to its neighbours? CM23 1HQ (0.01 miles, farnham) has 0% superfast coverage and 0% gigabit.

Not every property at CM23 1HH gets the same speeds. Run a postcode check with each provider before signing up. Headline speeds are not guarantees. 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.

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

Looking at the overall picture for CM23 1HH, a few things are worth highlighting. Broadband is the main concern at CM23 1HH. With no superfast coverage, check what alternatives exist before committing. 4G home broadband, satellite, or community fibre schemes may fill the gap. Uttlesford 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. Farnham 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 1HH, 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.

That is the full data picture for CM23 1HH in Farnham. Use it alongside your own research. For the most current broadband speeds, run a live speed test from this page. Check back periodically as data is refreshed with new releases.

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 1HH

What are the broadband speeds available at CM23 1HH?

Broadband is available at CM23 1HH. Contact local providers for specific speed information.

What is the average house price near CM23 1HH?

No recent house price data is available for CM23 1HH.

What is the flood risk for properties at CM23 1HH?

CM23 1HH has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the CM23 1HH area?

School data for CM23 1HH is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in CM23 1HH compare to other areas?

Crime data for this area is being updated.

How suitable is CM23 1HH for remote working?

CM23 1HH scores 50/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at CM23 1HH?

4G outdoor coverage at CM23 1HH is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near CM23 1HH?

EPC data for CM23 1HH is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at CM23 1HH?

Council tax band information for CM23 1HH is being updated.

How accessible are GP surgeries near CM23 1HH?

GP surgery data for CM23 1HH is being updated. Check NHS.uk for the latest.

What transport links are available near CM23 1HH?

Transport data for CM23 1HH is being updated.

Is CM23 1HH a suitable area for families?

CM23 1HH scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at CM23 1HH?

Air quality data for CM23 1HH is being updated.

How far is the nearest EV charging point from CM23 1HH?

EV charging data for CM23 1HH is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at CM23 1HH?

Full fibre availability at CM23 1HH is being updated. Check Openreach for the latest rollout status.

Area suitability scores

CM23 1HH

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

Farnham

District

Uttlesford

Region

Constituency

LSOA

E01022089

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