SG4 postcode
Broadband in SG4 7LN
Graveley, North Hertfordshire
Superfast broadband covers 47.1% of premises here.
Free, independent comparison · Ofcom verified data · Updated 7 March 2026
Flood Risk
Medium
Fibre (FTTP)
No
Best speed
~30 Mbps
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.
The best available speed at SG4 7LN is ~30 Mbps. That covers your 14 Mbps estimate.
Speed Test
Check your current download speed and see how it compares to what is available at SG4 7LN.
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)
| Technology | Available | Coverage | Typical Speed |
|---|---|---|---|
| Standard (ADSL) | 47% | 47% | 10-20 Mbps |
| Superfast (30+ Mbps) | 47% | 47% | 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 SG4 7LN
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 North Hertfordshire
Most common: Band
Annual council tax estimates for , 2024/25
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Looking at SG4 7LN in Graveley? Here is what the data says. From broadband coverage to crime rates, this is the full picture. All numbers are from official sources. The guide is updated as new data becomes available.
Superfast broadband (30 Mbps+) coverage at SG4 7LN stands at 47.1%. That is below the UK average of 93%.
The speed distribution at SG4 7LN tells a more detailed story than headline figures alone. 52.9% of connections fall in the 10 to 30 Mbps range. 47.1% 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 SG4 7LN 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 SG4 7LN. 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 7LN, 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 7LN 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 7LN 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 7LN: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
SG4 7LN falls within the North Hertfordshire local authority area. 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 7LN is below the area average of 92%.
How does SG4 7LN compare to its neighbours? SG4 7LP (0.05 miles, graveley) has 0% superfast coverage and 0% gigabit. SG4 7LN has better superfast coverage than its immediate neighbours.
Broadband availability varies by provider and by property. At SG4 7LN, 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.
Graveley offers a mix of residential properties and local amenities. The character of any area is best judged in person.
Pulling the data together for SG4 7LN, here is what stands out. 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 7LN. 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.
That is the full data picture for SG4 7LN in Graveley. 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 SG4 7LN
What are the broadband speeds available at SG4 7LN?
Superfast broadband (30 Mbps+) is available to 47.1% of premises at SG4 7LN.
What is the average house price near SG4 7LN?
No recent house price data is available for SG4 7LN.
What is the flood risk for properties at SG4 7LN?
SG4 7LN has a Medium flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the SG4 7LN area?
School data for SG4 7LN is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in SG4 7LN compare to other areas?
Crime data for this area is being updated.
How suitable is SG4 7LN for remote working?
SG4 7LN scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at SG4 7LN?
4G outdoor coverage at SG4 7LN is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near SG4 7LN?
EPC data for SG4 7LN is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at SG4 7LN?
Council tax band information for SG4 7LN is being updated.
How accessible are GP surgeries near SG4 7LN?
GP surgery data for SG4 7LN is being updated. Check NHS.uk for the latest.
What transport links are available near SG4 7LN?
Transport data for SG4 7LN is being updated.
Is SG4 7LN a suitable area for families?
SG4 7LN scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at SG4 7LN?
Air quality data for SG4 7LN is being updated.
How far is the nearest EV charging point from SG4 7LN?
EV charging data for SG4 7LN is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at SG4 7LN?
Full fibre availability at SG4 7LN is being updated. Check Openreach for the latest rollout status.
Area suitability scores
SG4 7LNRemote Worker
35Based 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
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Area info
Parish
Graveley
District
North Hertfordshire
Region
Constituency
LSOA
E01023600
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