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Postcode District

SG3

KNEBWORTH

Hertfordshire, East Of England, England

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

Avg price £499,663
1yr change ▲ 3.6%
Crime 89% below avg
Schools 0 Outstanding
Updated 2026-03
BUS
Average House Price

£499,663

▲ 3.6% vs last year

This area National avg £287K

74% above national avg

Crime Rate

8.8/1,000

This area National avg 81.3/1,000

89% below national avg

Schools (Ofsted)

3 schools

Broadband Speed

260 Mbps

Property Prices in SG3

Source: HM Land Registry Price Paid Data

The average property price in SG3 is £499,663, which is 13% below the Hertfordshire average of £572,493.

Properties in SG3 cost 74.1% more than the England and Wales average of £287,000.

House prices in SG3 have risen 3.6% over the past 12 months and risen 0.0% over five years.

Explore Hertfordshire postcodes or read the Hertfordshire house prices guide →

Average Price by Property Type

Type Average Price Sales (12m)
Detached £787,849 73
Semi-detached £527,002 85
Terraced £396,268 83
Flat £302,366 84
All types £499,663 332

5-Year Price History

£493K £497K £502K £506K £511K 2023 2024 2025

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Crime & Safety in SG3

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

With 8.8 recorded crimes per 1,000 residents, SG3 has a crime rate well 89% below the national average of 81.3 per 1,000.

See how SG3 compares: safest areas in England & Wales →

Crime by Type vs National Average

Violent crime
2.8 per 1,000 (avg: 22.1 per 1,000)
Burglary
0.4 per 1,000 (avg: 6.8 per 1,000)
Vehicle crime
0.8 per 1,000 (avg: 8.4 per 1,000)
Antisocial behaviour
1.8 per 1,000 (avg: 16.2 per 1,000)
Other theft
1.4 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 1 rated Good by Ofsted.

How Ofsted ratings affect house prices →

Nearest Schools

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

0

Outstanding

1

Good

0

Requires improvement

0

Inadequate

Demographics

Source: ONS Census 2021

137,201

Population

62

Median Age

31%

Owner-Occupied

76%

Economically Active

Tenure Type

Owner-occupied
31.0%
Private rent
14.0%
Social rent
19.0%

Broadband & Connectivity

Source: Ofcom Connected Nations

Average broadband download speeds in SG3 are 260.0 Mbps, with 99% of premises having access to superfast broadband and 87% with full fibre (FTTP) connectivity.

How broadband speeds affect house prices →

260.0 Mbps

Avg Download

47.0 Mbps

Avg Upload

96%

Superfast Coverage

60%

Ultrafast Coverage

0%

Full Fibre (FTTP)

Council Tax

Source: Valuation Office Agency

Council tax in SG3 is collected by North Hertfordshire. The Band D rate is £2,123/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 (£499,663, 74% above national average), low crime (89% below national average), 3 nearby schools, and excellent broadband (260 Mbps average).

Prices

Above avg

Safety

Low crime

Schools

Weak

Broadband

Good

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Frequently Asked Questions about SG3 KNEBWORTH

What is the average house price in SG3 KNEBWORTH?
The average house price in SG3 (KNEBWORTH) is £499,663, based on 332 residential sales in the past 12 months. This is 74% above the national average of £287,000. Prices have risen by 3.6% over the past year.
Is SG3 KNEBWORTH a safe area to live?
Crime in SG3 is significantly below the national average (8.8 crimes per 1,000 residents vs the national average of 81.3). The most common crime types recorded are violent crime (2.8 per 1,000) and antisocial behaviour (1.8 per 1,000). Crime figures are sourced from data.police.uk rolling 12-month data.
What is the population of SG3 KNEBWORTH?
The population of SG3 (KNEBWORTH) is approximately 137,201 (ONS Census 2021). The median age is 62 years. 31% of homes are owner-occupied, 14% are privately rented, and 19% are social housing.
How fast is broadband in SG3?
The average broadband download speed in SG3 is 260 Mbps. Superfast broadband (30 Mbps+) is available to 96% of premises, ultrafast to 60%, and full-fibre (FTTP) to 0%. Source: Ofcom Connected Nations.
What are schools like in SG3 KNEBWORTH?
There are 3 schools in or near SG3. 33% are rated Good or Outstanding by Ofsted — 0 Outstanding and 1 Good. None require improvement.

Nearby Postcodes

Compare areas →

SG2

STEVENAGE

£381K

▲ 3.9% YoY

SG4

HITCHIN

£560K

▼ 1.6% YoY

SG5

HITCHIN

£492K

▲ 0.3% YoY

Compare SG3 with nearby areas

SG3 vs SG2 SG3 vs SG4 SG3 vs SG5

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