SG4 postcode

Broadband in SG4 7LG

Graveley, North Hertfordshire

Superfast broadband covers 12.5% of premises here.

Best speed~30 Mbps
StandardSuperfastGigabit
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Free, independent comparison · Ofcom verified data · Updated 4 March 2026

Flood Risk

Medium

Fibre (FTTP)

No

Best speed

~30 Mbps

Reviewed by Rex BlackwellData last verified: 4 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 SG4 7LG 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 SG4 7LG.

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)13%
13%
10-20 Mbps
Superfast (30+ Mbps)13%
13%
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 SG4 7LG

10–30 Mbps (88%)
30–300 Mbps (13%)

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 North Hertfordshire

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 SG4 7LG

This is the area guide for SG4 7LG, located in Graveley (North Hertfordshire). It covers connectivity, property, safety, and local services. Every claim links back to a specific data point. Read on for the detail.

Superfast coverage here stands at 12.5%. Nationally, 93% of UK premises have access. Some properties may struggle with speed.

Looking at the full speed profile for SG4 7LG gives a better picture of what to expect. 87.5% of connections fall in the 10 to 30 Mbps range. 12.5% 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.

What do the broadband speeds at SG4 7LG mean in practice? Superfast coverage is limited here. Streaming HD video should work on one device. Multiple simultaneous streams may struggle during peak hours. 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.

Fixed Wireless Access is not currently available at SG4 7LG. For properties without fibre, 4G or 5G home broadband from Three, EE, or Vodafone may be an alternative.

The USO guarantees every UK home at least 10 Mbps. At SG4 7LG, 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 SG4 7LG 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 SG4 7LG 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 SG4 7LG: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.

The local authority for SG4 7LG is North Hertfordshire. The immediate area is Graveley, a distinct community within the wider district. The SG4 postcode area contains 890 postcodes on this site. Superfast broadband across SG4 ranges from 0% to 100%. SG4 7LG is below the area average of 92%.

How does SG4 7LG compare to its neighbours? SG4 7LH (0.04 miles, graveley) has 0% superfast coverage and 0% gigabit. SG4 7LG has better superfast coverage than its immediate neighbours.

Not every property at SG4 7LG 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 Graveley 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 SG4 7LG? North 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. Graveley 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.

Numbers tell part of the story for SG4 7LG. Visit at different times of day. Talk to neighbours. Check mobile signal indoors. Walk the route to the nearest school or station. Test the broadband speed from inside the property. These things do not show up in data.

SG4 7LG in Graveley: 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 SG4 7LG

What are the broadband speeds available at SG4 7LG?

Superfast broadband (30 Mbps+) is available to 12.5% of premises at SG4 7LG.

What is the average house price near SG4 7LG?

No recent house price data is available for SG4 7LG.

What is the flood risk for properties at SG4 7LG?

SG4 7LG has a Medium flood risk rating. Check Environment Agency maps for detail.

What schools are nearby in the SG4 7LG area?

School data for SG4 7LG is being updated. Check the Get Information About Schools service for the latest.

How does crime rate in SG4 7LG compare to other areas?

Crime data for this area is being updated.

How suitable is SG4 7LG for remote working?

SG4 7LG scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.

What is the mobile signal like at SG4 7LG?

4G outdoor coverage at SG4 7LG is 95%. Indoor coverage may be lower.

What is the most common energy efficiency rating near SG4 7LG?

EPC data for SG4 7LG is being updated. Check the EPC register for individual property ratings.

What is the council tax band distribution at SG4 7LG?

Council tax band information for SG4 7LG is being updated.

How accessible are GP surgeries near SG4 7LG?

GP surgery data for SG4 7LG is being updated. Check NHS.uk for the latest.

What transport links are available near SG4 7LG?

Transport data for SG4 7LG is being updated.

Is SG4 7LG a suitable area for families?

SG4 7LG scores 50/100 for family suitability. Check school and crime sections above for detail.

What is the air quality like at SG4 7LG?

Air quality data for SG4 7LG is being updated.

How far is the nearest EV charging point from SG4 7LG?

EV charging data for SG4 7LG is being updated. Check Zap-Map for the latest.

Can I get full fibre broadband at SG4 7LG?

Full fibre availability at SG4 7LG is being updated. Check Openreach for the latest rollout status.

Area suitability scores

SG4 7LG

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

Explore nearby postcodes

Area info

Parish

Graveley

District

North Hertfordshire

Region

Constituency

LSOA

E01023600

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