| Postcode | AL7 3XG | 
|---|---|
| Post Town | Welwyn, Welwyn Garden City | 
| Nearest station | Welwyn Garden City (1 km) | 
| Bus stops | Pond Croft (NE) Holwell Road (N) Holwell Road (S) Peartree Lane (NW) Peartree Lane (SE) Penn Way (SW) | 
| Roads in this postcode | |
| Number of UPRNs | 17 View | 
| Known addresses | 2 Gainswood, Welwyn Garden City 3 Gainswood, Welwyn Garden City 4 Gainswood, Welwyn Garden City 5 Gainswood, Welwyn Garden City 8 Gainswood, Welwyn Garden City 9 Gainswood, Welwyn Garden City 11 Gainswood, Welwyn Garden City 13 Gainswood, Welwyn Garden City 16 Gainswood, Welwyn Garden City | 
| Main property type | Terraced | 
| Businesses | 
| Latitude | 51.794702 | |
|---|---|---|
| Longitude | -0.198584 | |
| Easting | 524329 | |
| Northing | 212207 | |
| Grid reference | TL243122 | |
| UTM reference | 30U 693179 5741917 | |
| what3words | fell.aware.lists | |
| FixPhrase | crinkly magnesium superjet untidy | |
| Plus code | 9C3XQRV2+VH | |
| Altitude | 88 metres (288 feet) | |
| Sunrise (today) | 6:54 | |
| Sunset (today) | 16:36 | |
| Distance away | ||
| Distance to sea | 55.3 KMs (34.4 miles) | 
| Parish | Welwyn Hatfield, unparished area | E43000083 | 
|---|---|---|
| Ward | Peartree | E05011069 | 
| Local Authority District | Welwyn Hatfield | E07000241 | 
| County Electoral Division | Handside & Peartree | E58000623 | 
| Local Authority | Hertfordshire | E10000015 | 
| County | Hertfordshire | E10000015 | 
| Constituency (2024) | Welwyn Hatfield | E14001573 | 
| MP | Andrew Lewin | Labour | 
| Police force | Hertfordshire | |
| Water company | Affinity Water | |
| Sewage company | Thames Water | |
| NUTS/ITL 3 | North and East Hertfordshire | |
| NUTS/ITL 2 | Bedfordshire and Hertfordshire | |
| NUTS/ITL 1 | East of England | |
| Country | England | E92000001 | 
| Date introduced | January 1980 | 
|---|---|
| Last updated | September 2025 | 
| User type | Small (addresses receive less than 25 items of mail per day) | 
| Quality | Within the building of the matched address closest to the postcode mean | 
| Population (2011) | 40 | |
|---|---|---|
| Households (2011) | 13 | |
| Index of Multiple Deprivation (2019) | Most deprivedLeast deprived | |
| Average household income (2020) | Lowest (£22,200)
                        Highest (£108,100)
                       | |
| Rural/urban (2021) | Urban: Nearer to a major town or city | |
| Rural/urban (2011) | Urban city and town | |
| Built up area (2024) | Welwyn Garden City | E63011463 | 
| Census output area (2021) | E00121633 | |
| Census output area (2011) | 4A1 | |
| Lower layer super output area (2021) | Welwyn Hatfield 007C | E01023956 | 
| Lower layer super output area (2011) | Welwyn Hatfield 007C | E01023956 | 
| Middle layer super output area (2021) | Peartree | E02004986 | 
| Middle layer super output area (2011) | Peartree | E02004986 | 
| Travel to work area | Stevenage and Welwyn Garden City | E30000272 | 
| Average property price in St Albans | £541,094 | 
|---|---|
| Annual change | -0.5% | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 3 Gainswood, Welwyn Garden City | Terraced (freehold) | Feb 2024 | £385,000 | 
| Terraced (freehold) | Dec 2019 | £350,000 | |
| Terraced (freehold) | Jun 2002 | £134,950 | |
| 2 Gainswood, Welwyn Garden City | Semi-detached (freehold) | Jan 2021 | £375,000 | 
| Semi-detached (freehold) | Dec 2007 | £200,000 | |
| 11 Gainswood, Welwyn Garden City | Semi-detached (freehold) | Nov 2020 | £475,000 | 
| Semi-detached (freehold) | Jul 2002 | £139,995 | |
| 4 Gainswood, Welwyn Garden City | Terraced (freehold) | Mar 2020 | £353,000 | 
| Terraced (freehold) | Oct 2017 | £350,000 | |
| Terraced (freehold) | Dec 2005 | £168,000 | |
| Terraced (freehold) | Oct 1999 | £86,000 | |
| Terraced (freehold) | Jun 1998 | £79,950 | |
| 8 Gainswood, Welwyn Garden City | Terraced (freehold) | Nov 2019 | £365,000 | 
| Terraced (freehold) | May 2017 | £352,000 | |
| Terraced (freehold) | Apr 2003 | £182,000 | |
| Terraced (freehold) | Oct 1998 | £83,000 | |
| Terraced (freehold) | Jun 1995 | £59,995 | |
| 9 Gainswood, Welwyn Garden City | Terraced (freehold) | Oct 2009 | £199,950 | 
| Terraced (freehold) | Jun 2002 | £134,950 | |
| Terraced (freehold) | Jan 1995 | £59,000 | |
| 13 Gainswood, Welwyn Garden City | Terraced (freehold) | Mar 2008 | £215,000 | 
| Terraced (freehold) | Nov 2007 | £210,000 | |
| Terraced (freehold) | Oct 2003 | £171,000 | |
| Terraced (freehold) | Apr 1995 | £58,500 | |
| 16 Gainswood, Welwyn Garden City | Terraced (freehold) | Dec 2005 | £208,000 | 
| Terraced (freehold) | Nov 1996 | £59,995 | |
| 5 Gainswood, Welwyn Garden City | Semi-detached (freehold) | May 2002 | £130,000 |