SO21 postcode

Broadband in SO21 1RR

Colden Common, Winchester

Superfast broadband covers 36.4% of premises here.

Best speed~30 Mbps
StandardSuperfastGigabit
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Free, independent comparison · Ofcom verified data · Updated 1 March 2026

Flood Risk

High

Fibre (FTTP)

No

Best speed

~30 Mbps

Reviewed by Arthur TuringData last verified: 1 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

The best available speed at SO21 1RR is ~30 Mbps. That covers your 14 Mbps estimate.

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Speed Test

Check your current download speed and see how it compares to what is available at SO21 1RR.

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)36%
36%
10-20 Mbps
Superfast (30+ Mbps)36%
36%
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 SO21 1RR

10–30 Mbps (64%)
30–300 Mbps (36%)

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: High

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

Flood Zone

Risk Level

High

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 Winchester

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 SO21 1RR

This is the area guide for SO21 1RR, located in Colden Common (Winchester). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.

36.4% of premises at SO21 1RR can access superfast broadband. The UK average is 93%. There is room for improvement here.

Here is how broadband speeds break down across premises at SO21 1RR. 63.6% of connections fall in the 10 to 30 Mbps range. 36.4% of connections fall in the 30 to 300 Mbps range. No premises here are stuck below 5 Mbps. Every property meets the basic threshold for video calls.

Translating the numbers at SO21 1RR into daily use gives a clearer picture. Superfast coverage is limited here. Streaming HD video should work on one device. Multiple simultaneous streams may struggle during peak hours.

Fixed Wireless Access is not currently available at SO21 1RR. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.

0% of premises at SO21 1RR fall below the Universal Service Obligation of 10 Mbps. 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 SO21 1RR is rated High. 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 SO21 1RR 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. Strong 4G coverage combined with limited fixed broadband means 4G home broadband could be a practical alternative here.

Suitability scores for SO21 1RR: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

SO21 1RR falls within the Winchester local authority area. The immediate area is Colden Common, a distinct community within the wider district. The SO21 postcode area contains 732 postcodes on this site. Superfast broadband across SO21 ranges from 0% to 100%. SO21 1RR is below the area average of 79%.

Not every property at SO21 1RR 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.

Every part of Colden Common has its own feel. This data gives you the factual starting point. A visit fills in the rest.

Looking at the overall picture for SO21 1RR, a few things are worth highlighting. Winchester 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. Colden Common 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 Colden Common. 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.

SO21 1RR in Colden Common: 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 SO21 1RR

What are the broadband speeds available at SO21 1RR?

Superfast broadband (30 Mbps+) is available to 36.4% of premises at SO21 1RR.

What is the average house price near SO21 1RR?

No recent house price data is available for SO21 1RR.

What is the flood risk for properties at SO21 1RR?

SO21 1RR has a High flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SO21 1RR area?

School data for SO21 1RR is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SO21 1RR compare to other areas?

Crime data for this area is being updated.

How suitable is SO21 1RR for remote working?

SO21 1RR scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SO21 1RR?

4G outdoor coverage at SO21 1RR is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SO21 1RR?

EPC data for SO21 1RR is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SO21 1RR?

Council tax band information for SO21 1RR is being updated.

How accessible are GP surgeries near SO21 1RR?

GP surgery data for SO21 1RR is being updated. Check NHS.uk for the latest.

What transport links are available near SO21 1RR?

Transport data for SO21 1RR is being updated.

Is SO21 1RR a suitable area for families?

SO21 1RR scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SO21 1RR?

Air quality data for SO21 1RR is being updated.

How far is the nearest EV charging point from SO21 1RR?

EV charging data for SO21 1RR is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SO21 1RR?

Full fibre availability at SO21 1RR is being updated. Check Openreach for the latest rollout status.

Area suitability scores

SO21 1RR

Remote Worker

35

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

Area info

Parish

Colden Common

District

Winchester

Region

Constituency

LSOA

E01023227

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