PostcodePropertyPostcodeProp
Free reportsProperty reportsHow it worksPricingBlog
Buy a report →
PostcodeProperty.ai

Independent property due diligence for the UK. Free area reports, £14.95 property reports. No subscriptions, ever.

Product
  • Free area reports
  • Property reports
  • Compare areas
  • Pricing
  • Blog
Legal
  • Privacy
  • Terms
  • About
  • Contact
Data Sources
United Kingdom:TfL / NaPTAN / National Rail · National Chargepoint Registry · Open-Meteo · OpenStreetMap
Great Britain:Police.uk · Ofcom Connected Nations · DEFRA UK-AIR · DfT STATS19 · UKHSA Radon Risk
England & Wales:ONS Census 2021 · ONS Private Rental Market Stats
England:MHCLG EPC Register · Environment Agency · planning.data.gov.uk · HM Land Registry (Price Paid) · Historic England · DEFRA Noise Mapping · DfE / Ofsted / GIAS · VOA Council Tax Bands · CQC / NHS Digital · Food Standards Agency · MHCLG IMD 2025
© 2026 PostcodeProperty.ai. All rights reserved.Contains public sector information licensed under the Open Government Licence v3.0.
  1. Home
  2. /
  3. Area Reports
  4. /
  5. SG3
FREE REPORTNo signup required · No subscription

SG3 Area Report

North Hertfordshire

Data from 22 official government & open-data sources · Updated June 2026

£452,232
Median Price
Postcode district (SG3)
LOW
Crime Level
Postcode district (SG3)
3
Schools Nearby
40/100
Transport Score
~50 Mbps
Broadband Est.
6/10

Investment Score

Average

Based on rental yield, price growth, safety, schools, transport & flood risk in SG3

Rental Yield
4
Price Growth
5.4
Safety
9
Schools
7
Transport
4
Flood Risk
6
Planning Friction
10
Climate Resilience
6

Crime Statistics

LOW CRIMEPostcode district (SG3)

Low crime area - significantly below average for this region.

20
Crimes/month
40
Area average

See the full crime breakdown by category, monthly trends & street-level detail

Get Property Report · £14.95 →

12-Month Crime Trend↓ Decreasing

2025-04: 35
2025-05: 25
2025-06: 23
2025-07: 34
2025-08: 30
2025-09: 34
2025-10: 26
2025-11: 31
2025-12: 24
2026-01: 16
2026-02: 20
2026-03: 24
2025-042026-03

↓ 22% vs previous period

Source: Police.uk • Open Government Licence

Deprivation Index (IMD)Local authority (North Hertfordshire)

DECILE 8/10 — 70–80% least deprived

North Hertfordshire has below-average deprivation, in the top 30% of least-deprived areas.

income
7
employment
7
education
7
health
8
crime
7
housing
7
environment
7

1 = most deprived 10%, 10 = least deprived 10% nationally

Source: MHCLG Index of Multiple Deprivation 2025 • Open Government Licence

House Price Index

Local-authority-wide figures for North Hertfordshire (the HPI is only published at LAD level). SG3 spans 3 local authorities; North Hertfordshire is the one covering the bulk of the outcode. For the SG3-specific median see the headline above and the sales sections below.

£420,695
North Hertfordshire average
+1.5%
Annual Change
Stable
Market

Average Price by Type

£803,624
Detached
£481,892
Semi-Detached
£377,725
Terraced
£229,605
Flat

24-Month Price Trend

01/12/2002: £159,376
01/12/2003: £182,933
01/12/2004: £203,081
01/12/2005: £205,820
01/12/2006: £226,246
01/12/2007: £240,351
01/12/2008: £217,463
01/12/2009: £215,981
01/12/2010: £232,952
01/12/2011: £229,854
01/12/2012: £234,642
01/12/2013: £250,660
01/12/2014: £281,878
01/12/2015: £320,220
01/12/2016: £347,375
01/12/2017: £364,548
01/12/2018: £363,779
01/12/2019: £353,892
01/12/2020: £374,532
01/12/2021: £381,458
01/12/2022: £397,417
01/12/2023: £398,888
01/12/2024: £414,563
01/12/2025: £420,695
01/12/200201/12/2025

Source: HM Land Registry UK House Price Index (as of 01/12/2025) • Open Government Licence

Schools & Education

3
Primary
3
Within 1 mile

Breakdown of all 3 schools within 1 mile, by phase.

Get school names, exact distances & Ofsted links for your specific address

Get Property Report · £14.95 →

Source: Department for Education • School Performance Tables 2024/25

Transport Links

40/100
Moderate transport - bus links available, may need connections for tube/rail.

Get full station list with walk times on a Property Report

View Property Report →

Source: TfL API & National Rail

Browse by property type

Median prices in SG3 broken out by HMLR property type, last 5 years.

Detached
£695,000
128 sales
Semi-detached
£500,000
120 sales
Terraced
£375,000
125 sales
Flat
£270,000
149 sales

Pages only appear above where at least 10 sales were registered in the last 5 years.

Price Trends

Momentum for North Hertfordshire. For the headline SG3 median see the top of the page; for the smoothed local-authority average see the House Price Index section above.

+1.5%
1 Year Change
stable
Market Status
North Hertfordshire
Area Tracked

12 Month Trend

Unlock chart in Property Report

Source: ONS House Price Index • Open Government Licence

Unlock More in Property Reports

Get complete data when you purchase a Property Report (£14.95 one-off):

✓Full crime breakdown (all categories)
✓Monthly crime trends chart
✓All schools with Ofsted links
✓Price history charts
✓Average income & economy data
✓Healthcare - GPs, dentists, hospitals
✓EPC certificate & energy costs
✓Planning applications nearby
Get Property Report - £14.95 →

Council Tax📍Postcode-level

🔒 Get the actual band for this property£14.95
D
Band D
£68,001 - £88,000 (1991 valuation)
Est. £2,100/year
Estimated band — verify on gov.uk
Band A
Up to £40,000
Band B
£40,001 - £52,000
Band C
£52,001 - £68,000
Band D
£68,001 - £88,000
Band E
£88,001 - £120,000
Band F
£120,001 - £160,000
Band G
£160,001 - £320,000
Band H
Over £320,000

Source: Valuation Office Agency

Planning Applications & Constraints📍Postcode-level

🔒 Get the planning history for this exact property£14.95
Planning Friction
0/10
No restrictions
Designation Stack
0
No designations
Climate Resilience
6/10
Mixed
Planning Constraints:
Built-up Area
What can I actually do here?
✓ Likely allowed (8)
  • Single-storey rear extension (under 4 m)
  • Loft conversion with rear dormer
  • Replace windows (uPVC, double-glazed)
  • Solar PV panels on roof
  • Heat pump (air source) external unit
  • Front porch (under 3 m²)
  • Outbuilding / garden room
  • Fell or significantly prune a tree
⚠ Needs consent (2)
  • Drop kerb / new vehicle access
  • Demolish + rebuild
✗ Blocked (0)
  • —

Indicative only — your local planning authority has the final say.

View council planning portal →

Source: planning.data.gov.uk

Heritage & Listed Buildings📍Postcode-level

🔒 Is THIS building listed? Get the answer£14.95
Listed Buildings Nearby
1
Grade II

Source: Historic England

Noise Levels

quiet
This location falls outside DEFRA strategic noise contours, indicating low environmental noise levels.

Source: DEFRA Strategic Noise Maps (Round 3)

UPGRADE TO

Property Report

Get address-specific data for a property you're serious about.

  • ✓Actual EPC certificate
  • ✓Property sales history
  • ✓Comparable sales nearby
  • ✓Planning applications
  • ✓Council tax band
  • ✓Heritage status
£14.95one-off
✓ No subscription
✓ No monthly fees
✓ Pay once, own forever
Get Property Report →

BroadbandEst.

Avg Download~50 Mbps
Max Available~500 Mbps
Superfast+ Yes
Full Fibre× No

Estimated from area data • Verify on Ofcom

Air Quality

Low

Low pollution. Ideal for outdoor activities.

Source: DEFRA UK-AIR

Flood Risk

NONE RISK

No current flood alerts in this area.

Source: Environment Agency

Walkability

90/100

Excellent walkability with daily errands easily completed on foot.

Within ½ mile:11 places

Source: OpenStreetMap

Why no subscription?

You're buying a house, not renting data. We believe you should pay once for the information you need, not £10-30/month that auto-renews.

+One-off payment
+No auto-renewal
+No account required for free reports

Explore More for SG3

Price TrendsCost of LivingFlatsHousesDetachedSemi-DetachedTerraced

Share This Report

Share with a friend — both get £3 off your next property report

WhatsAppX / TwitterFacebookEmail

Local Climate

5-year average from Open-Meteo

11°C
Avg Temperature
730mm
Annual Rainfall
2753h
Sunshine/Year
21.6 km/h
Avg Wind
Warmest: July
Coldest: January
Wettest: September
Driest: April
Now: 13°C, OvercastHumidity: 86%

Source: Open-Meteo Historical Weather API

Food Hygiene Ratings

34 rated establishments within 1 mile

4.8/5
Average Rating
97%
Rated Good or Very Good
34
Total Establishments
Monread LodgeCaring Premises
5/5
Knebworth LtdRetailers - other
5/5
Knebworth JMI SchoolSchool/college/university
5/5
Knebbers Crew c/o Knebworth Primary and Nursery SchoolCaring Premises
5/5
Simmons (Bakers) LimitedRetailers - other
5/5

Source: Food Standards Agency

Energy & Carbon Intensity

Grid region: Unknown

17%
Renewable Energy
221g
CO₂/kWh
high
Intensity Level

Generation Mix

gas 50.5%wind 16.8%biomass 14.4%imports 10.2%nuclear 8.1%hydro 0.1%

Source: National Grid ESO Carbon Intensity API

Elevation

104m
Highabove sea level

At 104m above sea level, this location is well-elevated, significantly reducing flood risk from coastal and river sources.

Source: Open Topo Data (SRTM 30m)

Area Reviews

No reviews yet. Be the first to share your experience of this area!

Compare SG3 with nearby areas

SG3 vs SG1SG3 vs SG2SG3 vs SG4SG3 vs SG5
Browse all comparisons

Need address-specific data?

This free report shows area-level data. For property-specific information like EPC certificates, sales history, and planning applications, get a Property Report.

Get Property Report£14.95