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Postcode District

SG3

KNEBWORTH

Hertfordshire, East Of England, England

SG3 is the postcode district for KNEBWORTH, located in Hertfordshire, East Of England.

Avg price £439,293
1yr change ▲ 20.0%
Crime 11% below avg
Schools 0 Outstanding
Updated 2026-03
Average House Price

£439,293

▲ 20.0% vs last year

This area National avg £287K

53% above national avg

Crime Rate

72.4/1,000

▲ 10.0% vs previous year

This area National avg 81.3/1,000

11% below national avg

Schools (Ofsted)

3 schools

Broadband Speed

65 Mbps

Property Prices in SG3

Source: HM Land Registry Price Paid Data

The average property price in SG3 is £439,293, which is 15% below the Hertfordshire average of £513,810.

Properties in SG3 cost 53.1% more than the England and Wales average of £287,000.

House prices in SG3 have risen 20.0% over the past 12 months and risen 0.0% over five years.

Average Price by Property Type

Type Average Price Sales (12m)
Detached £704,200 5
Semi-detached £506,995 10
Terraced £420,797 16
Flat £286,142 0
All types £439,293 40

5-Year Price History

£435K £457K £478K £500K £522K 2025 2026

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Crime & Safety in SG3

Source: data.police.uk (rolling 12 months)

With 72.4 recorded crimes per 1,000 residents, SG3 has a crime rate 11% below the national average of 81.3 per 1,000.

Crime by Type vs National Average

Violent crime
19.5 per 1,000 (avg: 22.1 per 1,000)
Burglary
4.7 per 1,000 (avg: 6.8 per 1,000)
Vehicle crime
7.2 per 1,000 (avg: 8.4 per 1,000)
Antisocial behaviour
15.9 per 1,000 (avg: 16.2 per 1,000)
Other theft
11.6 per 1,000 (avg: 9.5 per 1,000)
This area
National average

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Schools in SG3

Source: DfE Get Information About Schools / Ofsted

SG3 has 3 schools within or near its boundaries, including 0 rated Good by Ofsted.

Nearest Schools

School Type Ofsted Distance
Knebworth Primary and Nursery School Primary Not yet inspected 0 mi
All Saints Church of England Voluntary Aided Primary School, Datchworth Primary Not yet inspected 0 mi
St Michael's Woolmer Green CofE VA Primary School Primary Not yet inspected 0 mi

0

Outstanding

0

Good

0

Requires improvement

0

Inadequate

Demographics

Source: ONS Census 2021

18,857

Population

44

Median Age

66%

Owner-Occupied

76%

Economically Active

Tenure Type

Owner-occupied
66.0%
Private rent
21.0%
Social rent
13.0%

Broadband & Connectivity

Source: Ofcom Connected Nations

Average broadband download speeds in SG3 are 65.0 Mbps, with 80% of premises having access to superfast broadband and 33% with full fibre (FTTP) connectivity.

65.0 Mbps

Avg Download

16.3 Mbps

Avg Upload

80%

Superfast Coverage

40%

Ultrafast Coverage

33%

Full Fibre (FTTP)

Council Tax

Source: Valuation Office Agency

Council tax in SG3 is collected by Stevenage Council. The Band D rate is £2,370/year.

Band A
8.0%
Band B
14.0%
Band C
25.0%
Band D
22.0%
Band E
16.0%
Band F
9.0%
Band G
5.0%
Band H
1.0%

Area Summary

SG

SG3 — KNEBWORTH

Area Summary

SG3 (KNEBWORTH) offers above-average property prices (£439,293, 53% above national average), 3 nearby schools, and good broadband connectivity (65 Mbps average).

Prices

Above avg

Safety

Average

Schools

Weak

Broadband

Good

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