UK Property Check · Printed on 8 November 2026ukpropertycheck.co.uk/postcode/np12
NP12Blackwood, Caerphilly, Wales
House prices in NP12, Blackwood
Homes in NP12 sold for a median of £210,000 between September 2024 and August 2026, from 810 standard sales.
That makes it the seventh cheapest of the 16 NP postcode districts with at least 100 sales.
Prices by property type
| Type | Sales | Median price | Middle half | Per m² |
|---|---|---|---|---|
| Detached | 240 | £329,000 | £280,000 to £375,000 | Too few |
| Semi-detached | 351 | £200,000 | £168,000 to £235,000 | Too few |
| Terraced | 211 | £160,000 | £140,000 to £182,000 | Too few |
Only 26 sales here are linked to an energy certificate with a floor area, so treat the per m² figures as a rough guide.
Semi-detached houses were the most common type sold here, at 43% of sales, ahead of detached houses at 30%.
Compare an asking price
- Check a home for its floor area
- How much to offer, then how to put the offer in writing
- Work out Land Transaction Tax
Where prices are higher in NP12
Of the postcode sectors with at least 20 standard sales, prices were highest in NP12 1, around Blackwood, with a median of £230,000, and lowest in NP12 3, around Cefn Fforest and Pengam, at £170,000. Dashed outlines on the map show roughly where the two sectors are.
Each dot is a postcode in NP12 with at least 3 standard sales from September 2024 to August 2026, shaded by the median price of those sales. Select a dot for its median and a link to its sales, or use the list below the map.
Map loading
List the 90 postcodes on the map, dearest first
| Postcode | Median price | Standard sales |
|---|---|---|
| NP12 2HB | £450,000 | 5 |
| NP12 0ES | £392,000 | 4 |
| NP12 0GX | £380,000 | 3 |
| NP12 0NQ | £337,500 | 6 |
| NP12 0RU | £335,000 | 4 |
| NP12 0ER | £330,000 | 3 |
| NP12 2RS | £330,000 | 12 |
| NP12 1GT | £327,000 | 4 |
| NP12 2RG | £326,000 | 17 |
| NP12 0BG | £302,500 | 4 |
| NP12 0GZ | £291,000 | 6 |
| NP12 3FT | £290,000 | 3 |
| NP12 0EG | £285,000 | 3 |
| NP12 2RE | £285,000 | 5 |
| NP12 2RF | £284,000 | 4 |
| NP12 1DN | £280,000 | 3 |
| NP12 2RR | £280,000 | 11 |
| NP12 1SN | £277,500 | 4 |
| NP12 1FZ | £275,000 | 13 |
| NP12 1FX | £270,000 | 47 |
| NP12 1JB | £270,000 | 3 |
| NP12 2QZ | £268,500 | 6 |
| NP12 2DS | £267,500 | 3 |
| NP12 0JH | £260,000 | 3 |
| NP12 1DF | £260,000 | 3 |
| NP12 1EQ | £255,000 | 3 |
| NP12 1DB | £251,500 | 4 |
| NP12 0NW | £250,000 | 5 |
| NP12 1HA | £250,000 | 3 |
| NP12 1EW | £242,000 | 3 |
| NP12 0UQ | £230,000 | 3 |
| NP12 2PL | £225,000 | 3 |
| NP12 1FF | £222,500 | 5 |
| NP12 0PA | £220,000 | 3 |
| NP12 2PJ | £220,000 | 3 |
| NP12 1FP | £217,500 | 4 |
| NP12 3PH | £215,000 | 3 |
| NP12 3TZ | £214,500 | 4 |
| NP12 1DT | £210,000 | 3 |
| NP12 2PH | £210,000 | 3 |
| NP12 2FW | £204,000 | 4 |
| NP12 3NA | £203,000 | 3 |
| NP12 2RD | £202,500 | 4 |
| NP12 3XH | £200,000 | 5 |
| NP12 0DD | £199,000 | 4 |
| NP12 2ED | £198,500 | 4 |
| NP12 2ET | £197,000 | 7 |
| NP12 0EL | £196,000 | 3 |
| NP12 2EG | £195,000 | 3 |
| NP12 0ND | £193,000 | 5 |
| NP12 1GA | £190,000 | 5 |
| NP12 0DA | £188,500 | 4 |
| NP12 1JF | £188,000 | 5 |
| NP12 1NU | £187,500 | 7 |
| NP12 2ER | £186,000 | 3 |
| NP12 0DF | £185,000 | 5 |
| NP12 3QR | £185,000 | 6 |
| NP12 1EA | £184,000 | 5 |
| NP12 2BX | £184,000 | 4 |
| NP12 1JQ | £183,500 | 3 |
| NP12 1DG | £180,000 | 3 |
| NP12 1FH | £180,000 | 3 |
| NP12 3XJ | £180,000 | 3 |
| NP12 0AT | £179,000 | 6 |
| NP12 3RD | £175,000 | 4 |
| NP12 1DZ | £170,000 | 3 |
| NP12 2GG | £170,000 | 3 |
| NP12 2JU | £168,000 | 3 |
| NP12 3NS | £161,000 | 3 |
| NP12 0DG | £160,000 | 3 |
| NP12 1DQ | £160,000 | 5 |
| NP12 3LA | £160,000 | 3 |
| NP12 2FF | £159,500 | 3 |
| NP12 2EL | £155,000 | 3 |
| NP12 2BY | £153,000 | 3 |
| NP12 3HF | £153,000 | 3 |
| NP12 3HB | £152,500 | 4 |
| NP12 2DL | £151,000 | 4 |
| NP12 0LY | £150,000 | 4 |
| NP12 1GP | £150,000 | 5 |
| NP12 3TJ | £150,000 | 5 |
| NP12 2NS | £143,000 | 5 |
| NP12 0AP | £140,000 | 5 |
| NP12 2NT | £140,000 | 3 |
| NP12 3JS | £140,000 | 3 |
| NP12 3NE | £140,000 | 3 |
| NP12 3RT | £129,000 | 4 |
| NP12 3NQ | £115,000 | 3 |
| NP12 0LZ | £100,000 | 3 |
| NP12 2QJ | £100,000 | 3 |
Prices over time
The median rose 74%, from £119,000 in 2016 to £206,500 in 2025, among the biggest tenth of rises across the 133 districts in Wales.
Coal mining
All 904 live postcodes in NP12 are in the Mining Remediation Authority's coal mining reporting area, so expect your conveyancer to order a mining report with the other conveyancing searches. It does not mean a home is affected (what the report covers).
Postcode districts in the Caerphilly council area
Median sale price of the 5 districts with at least 100 standard sales, September 2024 to August 2026, dearest first, each named by its post town. NP12 is the second most expensive.
- CF83 Caerphilly£225,000
- NP12 Blackwood, this district£210,000
- CF82 Hengoed£198,000
- NP11 Newport£170,000
- CF81 Bargoed£145,500
Recent sales
The 10 latest sales ran from £138,000 for a terraced house on Islwyn Terrace to £320,000 for a detached house on Manor Road.
The latest standard sales recorded in NP12. Sales take 2 weeks to 2 months to appear (how to find out what a house sold for). Select an address to check that home, or a postcode for every sale there.
- 1 Manor RoadSold for £320,000
- 42 Cae CollenSold for £185,000
- 54 Bedwellty RoadSold for £230,000
- 28 Addison StreetSold for £242,000
- 20 Islwyn TerraceSold for £138,000
- 15 BroadmeadSold for £195,000
- 40 Chartist RiseSold for £295,000
- 2 Bryn LaneSold for £268,000
- 27 Bryn RoadSold for £179,950
- 1 Central AvenueSold for £216,000
Streets with the most standard sales, with their median price, September 2024 to August 2026:
- Ffordd Caer Ywen, Cwmgelli£270,00047 sales
- Woodfieldside Road, Gellihaf£326,00017 sales
- Heol Waun Wen, Cwmgelli£275,00013 sales
- Sirhowy Crescent, Pontllanfraith£330,00012 sales
- Chartist Rise, Pontllanfraith£280,00011 sales
Living in NP12
Crime
91 crimes per 1,000 residents in the year to August 2026
Higher than 73 in 100 postcode districts. England and Wales: 84. The middle half of postcode districts are between 47 and 93.
The rate counts every crime recorded in an area against the people who live there, so shops, stations and nightlife push it up.
Gigabit broadband
Across its postcodes, an average of 90% of homes can get it
Near the middle of all postcode districts. England and Wales: 89%. The middle half of postcode districts are between 73% and 94%.
Radon
97% of postcodes are in a 1 km square that includes a radon Affected Area
Higher than 76 in 100 postcode districts.
In a radon Affected Area, UKHSA recommends a radon test. A UKradon report gives the result for an exact address.
Council tax
Band D is £2,083 a year in Caerphilly for 2026 to 2027
Lower than 95 in 100 council areas. Wales: £2,283. The middle half of council areas are between £2,323 and £2,526.
Band D includes every charge on the bill, such as the police and any community council.
The free check gives these for a single home, with the nearest schools and road and rail noise (how we work them out).
Crime: data.police.uk, with Census 2021 population from the Office for National Statistics. Broadband: Ofcom Connected Nations, January 2026. Radon: the British Geological Survey and UKHSA. Council tax: the Welsh Government. Contains public sector information licensed under the Open Government Licence v3.0.
Prices by council ward
Median price in the council wards that cover most of NP12, from the sales in NP12, September 2024 to August 2026, dearest first:
- Blackwood 248 sales£230,000
- Penmaen 145 sales£230,000
- Pontllanfraith 188 sales£203,000
- Cefn Fforest and Pengam 135 sales£170,000
- Argoed 52 sales£162,000
Energy ratings of homes for sale
| Rating | Homes | Share |
|---|---|---|
| A | 3 | |
| B | 20 | |
| C | 331 | |
| D | 284 | |
| E | 37 | |
| F | 7 | |
| G | 1 |
When the homes were built
| Built | Homes | Share |
|---|---|---|
| 33 | ||
| 142 | ||
| 44 | ||
| 151 | ||
| 146 | ||
| 46 | ||
| 105 | ||
| 16 |
About these figures
The figures come from 810 standard sales in NP12 (what counts as a standard sale). Of these, 11% were new builds and fewer than 1 in 10 were flats.
Updated 15 October 2026 with sales recorded to August 2026. Next update due in late November 2026.
Contains HM Land Registry data © Crown copyright and database right 2026. Energy certificate data from the Ministry of Housing, Communities and Local Government. Both are licensed under the Open Government Licence v3.0.