SG3 house prices, schools and flood risk.

101 homes sold in SG3 in the last 12 months at a median of £452,000, down 6.8% on the year before. Detached homes typically sold for £775,000, flats for £255,000.

Covers Aston, Datchworth & Walkern, Hertford Rural, Welwyn East, Codicote, Datchworth, Tewin, Woolmer Green.

Median sold price

£452k

Last 12 months

Change on year

-6.8%

From £485k

Homes sold

101

Last 12 months

New builds

3%

Of recent sales · see developments →

Prices

What homes sell for in SG3

Detached

£775k

18 sales

Semi-detached

£550k

27 sales

Terraced

£400k

33 sales

Flat

£255k

23 sales

Median sold price by year

All home types

£385k£428k£471k201620182020202220242026
Median sold price by year in SG3
2016£397k (134 sales)
2017£385k (117 sales)
2018£420k (101 sales)
2019£415k (113 sales)
2020£471k (122 sales)
2021£470k (176 sales)
2022£444k (110 sales)
2023£420k (75 sales)
2024£450k (125 sales)
2025£470k (146 sales)
2026£468k (66 sales, year so far)

HM Land Registry price paid data, standard sales only, to September 2026. Sales take a few weeks to be registered.

Streets

Where prices are highest and lowest

Median sold price over five years, streets with four or more sales.

Highest

Deards End LaneSG3 6NL · Mostly detached
£1,423,2504 sales
Swangleys LaneSG3 6AA · Mostly detached
£1,165,0004 sales
Watton RoadSG3 6AH · Mostly detached
£883,5004 sales
Stevenage RoadSG3 6NN · Mostly detached
£842,5008 sales
Raffin CloseSG3 6RP · Mostly detached
£740,0005 sales

Most affordable

HaygarthSG3 6HE · Mostly flats
£224,00012 sales
Cherry CloseSG3 6DS · Mostly flats
£231,2504 sales
Kerr CloseSG3 6AL · Mixed homes
£252,50022 sales
Wolves MereSG3 6JW · Mixed homes
£285,0009 sales
Mardleybury CourtSG3 6LP · Mixed homes
£286,0004 sales

Sold recently

Latest recorded sales

The Conifers, Gipsy LaneSG3 6DJ · Semi-detached · 123 m² · 5 rooms · 16 Sept 2026
£650,000£5,280/m²
22 Stockens DellSG3 6BG · Terraced · 131 m² · 7 rooms · 14 Sept 2026
£510,000£3,890/m²
19 LongmeadSG3 6JH · Terraced · 81 m² · 5 rooms · 14 Sept 2026
£394,000£4,860/m²
14 Abbots CloseSG3 6TA · Semi-detached · 80 m² · 5 rooms · 4 Sept 2026
£650,000£8,130/m²
111 Wadnall WaySG3 6DT · Terraced · 57 m² · 3 rooms · 27 Aug 2026
£315,000£5,530/m²
87 Brookbridge LaneSG3 6SZ · Detached · 95 m² · 5 rooms · 27 Aug 2026
£590,000£6,210/m²
1 Harold Villas, 8 Gun LaneSG3 6AU · Semi-detached · 21 Aug 2026
£808,000
Old Lane House, Old LaneSG3 6AE · Detached · 157 m² · 7 rooms · 14 Aug 2026
£875,000£5,570/m²

Floor area and rooms from each home's energy certificate. Rooms counts bedrooms and living rooms, not kitchens or bathrooms.

Living here

Schools, crime and flood risk

Schools within 2 miles

All Saints Church of England Voluntary Aided Primary School, DatchworthPrimary · 0.8 mi from the SG3 centre
Good
Oaklands Primary SchoolPrimary · 1.4 mi from the SG3 centre
Good
Shephalbury Park Primary SchoolPrimary · 1.6 mi from the SG3 centre
Good

Latest Ofsted ratings. Schools inspected since late 2025 show their report-card Achievement grade.

Flood warning areas

The Environment Agency issues flood alerts for these areas in and around SG3. Being near one doesn't mean a home floods; check the exact address.

River Mimram at Welwyn
Stevenage Brook at Stevenage
River Beane at Walkern
River Mimram in Hertfordshire
River Beane catchment

SG3 questions

What is the average house price in SG3?

The median sold price in SG3 over the last 12 months was £452,000, across 101 sales recorded by HM Land Registry. By type: detached £775,000, semi-detached £550,000, terraced £400,000, flat £255,000.

Are house prices in SG3 going up?

The median sold price was down 6.8% on the previous 12 months (£485,000). Medians move with the mix of homes sold, so treat one year's change as a signal, not a forecast.

What is the most expensive street in SG3?

Deards End Lane has the highest median sold price in SG3 over the last five years: £1,423,250 across 4 sales.

How do I know if a home in SG3 is fairly priced?

Compare the asking price with recent sales of similar homes nearby, adjust for condition and any risks, then offer from the evidence. A Proptel report does this for one address in about 30 seconds for £9.99, including a suggested offer range and a letter for the agent.

© 2026 Proptel · Property data for buyers

Buying in SG3?Know what to offer · £9.99