SG3 area guide
House prices, recent sales, crime and schools for the SG3 postcode district in East Hertfordshire. Free to read, from official open data. For one address in detail, run a full property report.
East Hertfordshire · 2026-05 (UK HPI)
Median £517,500
Street-level crime at the district centre
Ofsted rated, within one mile
What the data says about SG3
The average home across East Hertfordshire is worth about £460,485 (UK House Price Index, 2026-05), and the median of the 2 most recent Land Registry sales recorded inside SG3 is £517,500, and prices have risen 4.2% over the last year.
Of 320 energy certificates sampled across 12 postcodes in SG3, band C is the most common, and 54.1% of homes sit below band C — the point at which most lenders' green mortgage deals and future rental rules bite.
Police recorded 134 crimes around the centre of SG3 in the six months to 2026-06, most often violence and sexual offences (45).
There are 1 schools rated Good or Outstanding by Ofsted within a mile of SG3 in East Hertfordshire, including Knebworth Primary and Nursery School.
The district covers the Aston, Datchworth & Walkern, Hertford Rural, Knebworth, Welwyn East ward areas.
Sample of 320 energy certificates from 12 postcodes in SG3, taken from the government energy performance register, most recent lodged 2026. Indicative of the district rather than a full census.
Prices changed +4.2% over the last year in East Hertfordshire.
Street-level crime from data.police.uk, six months to 2026-06.
Primary
- Knebworth Primary and Nursery SchoolNot rated · 0.3 mi
- St Michael's Woolmer Green CofE VA Primary SchoolNot rated · 0.7 mi
- All Saints Church of England Voluntary Aided Primary School, DatchworthGood · 0.8 mi
- Oaklands Primary SchoolGood · 1.4 mi
- Shephalbury Park Primary SchoolGood · 1.6 mi
Secondary
- Greenside SchoolNot rated · 2.0 mi
- The Valley SchoolNot rated · 2.1 mi
- Barnwell SchoolGood · 2.1 mi
- Sherrardswood SchoolNot rated · 2.4 mi
- North Hertfordshire CollegeNot rated · 2.6 mi
Aston, Datchworth & Walkern · Hertford Rural · Knebworth · Welwyn East
Common questions about SG3
What is the average house price in SG3?
The UK House Price Index puts the average home in East Hertfordshire at £460,485 as of 2026-05. Recent Land Registry sales recorded inside the SG3 district have a median price of £517,500.
How much does each property type cost in SG3?
Detached £890,934, semi-detached £530,418, terraced £416,913, flats £252,822, based on the UK House Price Index for East Hertfordshire.
Is SG3 a safe area?
Police recorded 134 crimes near the centre of SG3 in the six months to 2026-06. The most common category was violence and sexual offences with 45 reports. Crime is recorded at street level, so figures vary street to street within the same district.
What EPC rating do homes in SG3 usually have?
Band C is the most common rating in our sample of 320 certificates from SG3, with 54.1% of homes rated below band C. A full property report shows the exact certificate, running costs and recommended improvements for one address.
What are the schools like near SG3?
1 schools within a mile of the SG3 district centre are rated Good or Outstanding by Ofsted. Nearby secondaries include Greenside School. Catchment areas are set by the local authority and can change year to year.
Where does this SG3 data come from?
HM Land Registry Price Paid Data and the UK House Price Index for prices, the government's energy performance register for EPC bands, data.police.uk for crime, Get Information About Schools and Ofsted for schools, and ONS postcode geography. All are published under the Open Government Licence v3.0.
A full report covers the energy certificate, sale history and valuation, council tax band and bill, flood and crime risk, schools, transport and neighbourhood data for a single property.
Search an addressMore on SG3
Nearby SG postcode districts
Sources: HM Land Registry Price Paid Data and UK House Price Index, ONS postcode geography, data.police.uk, Get Information About Schools and Ofsted. Contains public sector information licensed under the Open Government Licence v3.0.