SG4 postcode
Broadband in SG4 7LY
Graveley, North Hertfordshire
Superfast broadband covers 50% of premises here.
Free, independent comparison · Ofcom verified data · Updated 13 March 2026
Flood Risk
Low
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 7LY 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 7LY.
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) | 50% | 50% | 10-20 Mbps |
| Superfast (30+ Mbps) | 50% | 50% | 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 7LY
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: Low
This postcode is in undefined — low risk of flooding from rivers and sea.
Flood Zone
Risk Level
Low
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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Check Deals →Living near SG4 7LY
Graveley is home to SG4 7LY. 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.
50% of premises at SG4 7LY can access superfast broadband. The UK average is 93%. There is room for improvement here.
The speed distribution at SG4 7LY tells a more detailed story than headline figures alone. 50% 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 7LY mean in practice?
Fixed Wireless Access is not currently available at SG4 7LY. 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 7LY, 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 50% of the area. NGA typically means speeds of 24 Mbps or above.
Flood risk at SG4 7LY 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 SG4 7LY 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 7LY: remote working 35/100, family 50/100, value 50/100. Remote workers may want to verify actual speeds before committing.
SG4 7LY 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 7LY is below the area average of 92%.
How does SG4 7LY compare to its neighbours? SG4 7LT (0.06 miles, graveley) has 100% superfast coverage and 0% gigabit. Neighbouring postcodes tend to have better superfast coverage.
Not every property at SG4 7LY 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.
Pulling the data together for SG4 7LY, 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.
Data is a starting point for Graveley. 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.
SG4 7LY 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 7LY
What are the broadband speeds available at SG4 7LY?
Superfast broadband (30 Mbps+) is available to 50% of premises at SG4 7LY.
What is the average house price near SG4 7LY?
No recent house price data is available for SG4 7LY.
What is the flood risk for properties at SG4 7LY?
SG4 7LY has a Low flood risk rating. Check Environment Agency maps for detail.
What schools are nearby in the SG4 7LY area?
School data for SG4 7LY is being updated. Check the Get Information About Schools service for the latest.
How does crime rate in SG4 7LY compare to other areas?
Crime data for this area is being updated.
How suitable is SG4 7LY for remote working?
SG4 7LY scores 35/100 for remote working suitability. Speeds may limit video-heavy workflows.
What is the mobile signal like at SG4 7LY?
4G outdoor coverage at SG4 7LY is 95%. Indoor coverage may be lower.
What is the most common energy efficiency rating near SG4 7LY?
EPC data for SG4 7LY is being updated. Check the EPC register for individual property ratings.
What is the council tax band distribution at SG4 7LY?
Council tax band information for SG4 7LY is being updated.
How accessible are GP surgeries near SG4 7LY?
GP surgery data for SG4 7LY is being updated. Check NHS.uk for the latest.
What transport links are available near SG4 7LY?
Transport data for SG4 7LY is being updated.
Is SG4 7LY a suitable area for families?
SG4 7LY scores 50/100 for family suitability. Check school and crime sections above for detail.
What is the air quality like at SG4 7LY?
Air quality data for SG4 7LY is being updated.
How far is the nearest EV charging point from SG4 7LY?
EV charging data for SG4 7LY is being updated. Check Zap-Map for the latest.
Can I get full fibre broadband at SG4 7LY?
Full fibre availability at SG4 7LY is being updated. Check Openreach for the latest rollout status.
Area suitability scores
SG4 7LYRemote 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
E01033026
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