| Postcode | CF3 0DP | 
|---|---|
| Post Town | Cardiff | 
| Nearest station | Llanishen (6 km) | 
| Bus stops | 
                       Heritage Park (NW) 
Willow Grove (NW) 
Bishop Childs (NE) 
Wyevale Garden Centre (SW) 
Saffron Close (SE) 
Willowdene Way (NW) 
                     | 
                  
| Roads in this postcode | |
| Number of UPRNs | 43 View | 
| Known addresses | 
                       1 Heritage Park, St Mellons 
                            3 Heritage Park, St Mellons 
                            5 Heritage Park, St Mellons 
                            8 Heritage Park, St Mellons 
                            9 Heritage Park, St Mellons 
                            10 Heritage Park, St Mellons 
                            12 Heritage Park, St Mellons 
                            13 Heritage Park, St Mellons 
                            14 Heritage Park, St Mellons 
                            15 Heritage Park, St Mellons 
                            16 Heritage Park, St Mellons 
                            18 Heritage Park, St Mellons 
                            19 Heritage Park, St Mellons 
                            21 Heritage Park, St Mellons 
                            22 Heritage Park, St Mellons 
                            23 Heritage Park, St Mellons 
                            25 Heritage Park, St Mellons 
                            27 Heritage Park, St Mellons 
                            28 Heritage Park, St Mellons 
                            29 Heritage Park, St Mellons 
                            32 Heritage Park, St Mellons 
                            33 Heritage Park, St Mellons 
                            35 Heritage Park, St Mellons 
                            36 Heritage Park, St Mellons 
                            37 Heritage Park, St Mellons 
                            38 Heritage Park, St Mellons 
                            39 Heritage Park, St Mellons 
                            40 Heritage Park, St Mellons 
                            41 Heritage Park, St Mellons 
                            42 Heritage Park, St Mellons 
                       | 
                  
| Main property type | Terraced | 
| Businesses | 
| Latitude | 51.528459 | |
|---|---|---|
| Longitude | -3.097586 | |
| Easting | 323956 | |
| Northing | 181632 | |
| Grid reference | ST239816 | |
| UTM reference | 30U 493230 5708598 | |
| what3words | erase.season.assure | |
| FixPhrase | cringing luridness showroom unheard | |
| Plus code | 9C3RGWH2+9X | |
| Altitude | 19 metres (62 feet) | |
| Sunrise (today) | 7:10 | |
| Sunset (today) | 16:43 | |
| Distance away | ||
| Distance to sea | 2.8 KMs (1.8 miles) | 
| Parish | Trowbridge | W04001008 | 
|---|---|---|
| Ward | Trowbridge | W05001296 | 
| Unitary Authority | Cardiff | W06000015 | 
| County | South Glamorgan | W11000007 | 
| Constituency (2024) | Cardiff East | W07000089 | 
| MP | Jo Stevens | Labour | 
| Police force | South Wales | |
| Water company | Dwr Cymru Welsh Water | |
| NUTS/ITL 3 | Cardiff and Vale of Glamorgan | |
| NUTS/ITL 2 | South East Wales | |
| NUTS/ITL 1 | Wales | |
| Country | Wales | W92000004 | 
| Date introduced | January 1983 | 
|---|---|
| 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) | 82 | |
|---|---|---|
| Households (2011) | 41 | |
| 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) | Cardiff | W45001208 | 
| Census output area (2021) | W00009684 | |
| Census output area (2011) | 5A2 | |
| Lower layer super output area (2021) | Cardiff 011B | W01001878 | 
| Lower layer super output area (2011) | Cardiff 011B | W01001878 | 
| Middle layer super output area (2021) | Pwll-mawr & St Mellons East | W02000377 | 
| Middle layer super output area (2011) | Pwll-mawr & St Mellons East | W02000377 | 
| Travel to work area | Cardiff | W22000024 | 
| Address | Type | Date | Price | 
|---|---|---|---|
| 3 Heritage Park, St Mellons | Detached (freehold) | Nov 2024 | £267,500 | 
| Detached (freehold) | Feb 2019 | £200,000 | |
| Detached (freehold) | Sep 2011 | £150,000 | |
| 8 Heritage Park, St Mellons | Semi-detached (freehold) | Oct 2024 | £275,000 | 
| Semi-detached (freehold) | May 2012 | £192,500 | |
| 14 Heritage Park, St Mellons | Detached (freehold) | Apr 2024 | £305,000 | 
| Detached (freehold) | Feb 2001 | £80,000 | |
| Detached (freehold) | Mar 1997 | £64,000 | |
| 13 Heritage Park, St Mellons | Detached (freehold) | Nov 2023 | £192,000 | 
| Detached (freehold) | Jun 2000 | £75,000 | |
| Detached (freehold) | Oct 1996 | £54,000 | |
| 29 Heritage Park, St Mellons | Terraced (freehold) | Apr 2023 | £180,000 | 
| Terraced (freehold) | Dec 2015 | £126,000 | |
| Semi-detached (freehold) | Sep 2005 | £104,000 | |
| Semi-detached (freehold) | Feb 2003 | £74,000 | |
| Semi-detached (freehold) | Feb 1999 | £40,000 | |
| 33 Heritage Park, St Mellons | Terraced (freehold) | Nov 2022 | £140,000 | 
| Terraced (freehold) | Jan 1995 | £42,950 | |
| 10 Heritage Park, St Mellons | Semi-detached (freehold) | Sep 2022 | £250,000 | 
| Semi-detached (freehold) | Oct 2018 | £168,350 | |
| Semi-detached (freehold) | May 1998 | £58,950 | |
| 9 Heritage Park, St Mellons | Detached (freehold) | Jul 2022 | £295,000 | 
| 27 Heritage Park, St Mellons | Terraced (freehold) | Mar 2022 | £170,000 | 
| Terraced (freehold) | Jun 2001 | £51,000 | |
| 39 Heritage Park, St Mellons | Terraced (freehold) | Mar 2021 | £155,000 | 
| Terraced (freehold) | Sep 2013 | £112,000 | |
| Terraced (freehold) | Jan 1999 | £38,500 |