William Street, Blackwood
House prices, sold prices and local information for NP12 1NU, NP12 1NX, NP12 1NW.
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At a glance
37 property sales on William Street, Blackwood have been recorded by HM Land Registry since 2016. In the last 12 months 3 homes sold here for an average of £183,333. Most sales here are terraced homes, which have sold for an average of £129,256. That is 20% below the Blackwood average of £230,534 over the same period. 8 homes here have sold more than once since 2016; 8 of them sold for more the second time. By property type, sales here have been 89% terraced, 8% semi-detached, 3% flat. Recorded sale prices on William Street range from £74,000 to £335,000. Every home sold here was sold freehold. Of 69 streets in Blackwood with at least two sales in the last year, William Street ranks 52nd for average price.
House prices on William Street compared
Average sale price over the last 12 months. See all NP12 house prices.
Average sale price by year
Tenure: 100% freehold and 0% leasehold across 41 recorded sales.
Prices by property type
| Type | Sales | Average price | Last sold |
|---|---|---|---|
| Terraced | 33 | £129,256 | 25 Aug 2026 |
| Semi-detached | 3 | £150,333 | 30 Apr 2025 |
| Flat | 1 | £335,000 | 21 Aug 2025 |
Sold prices on William Street
| Address | Date | Price | Type | Tenure |
|---|---|---|---|---|
| 74, William Street NP12 1NU | 25 Aug 2026 | £200,000 | Terraced | Freehold |
| 69, William Street NP12 1NU | 19 Dec 2025 | £185,000 | Terraced | Freehold |
| 61, William Street NP12 1NU | 3 Dec 2025 | £165,000 | Terraced | Freehold |
| 40, William Street NP12 1NW | 26 Sep 2025 | £165,000 | Terraced | Freehold |
| 65, William Street NP12 1NU | 19 Sep 2025 | £187,500 | Terraced | Freehold |
| 2, The Old Court, William Street NP12 1NU | 21 Aug 2025 | £335,000 | Flat | Freehold |
| 27, William Street NP12 1NX | 25 Jul 2025 | £97,000 | Terraced | Freehold |
| 46, William Street NP12 1NW | 16 Jun 2025 | £188,000 | Terraced | Freehold |
| 82, William Street NP12 1NU | 30 Apr 2025 | £187,500 | Semi-detached | Freehold |
| 52, William Street NP12 1NU | 14 Feb 2025 | £175,000 | Terraced | Freehold |
| 2, William Street NP12 1NX | 9 May 2024 | £120,000 | Terraced | Freehold |
| 65, William Street NP12 1NU | 19 Jan 2024 | £174,950 | Terraced | Freehold |
| 34, William Street NP12 1NW | 13 Oct 2023 | £140,000 | Terraced | Freehold |
| 20, William Street NP12 1NX | 10 Feb 2023 | £110,500 | Terraced | Freehold |
| 10, William Street NP12 1NX | 21 Jun 2022 | £155,000 | Terraced | Freehold |
| 45, William Street NP12 1NW | 19 Nov 2021 | £121,000 | Terraced | Freehold |
| 74, William Street NP12 1NU | 7 Sep 2021 | £148,000 | Terraced | Freehold |
| 50, William Street NP12 1NU | 12 May 2021 | £115,000 | Terraced | Freehold |
| 68, William Street NP12 1NU | 25 Mar 2021 | £122,500 | Semi-detached | Freehold |
| 74, William Street NP12 1NU | 5 Mar 2021 | £90,000 | Terraced | Freehold |
| 10, William Street NP12 1NX | 23 Sep 2020 | £117,000 | Terraced | Freehold |
| 46, William Street NP12 1NW | 19 Jun 2020 | £135,000 | Terraced | Freehold |
| 62, William Street NP12 1NU | 20 Dec 2019 | £117,000 | Terraced | Freehold |
| 65, William Street NP12 1NU | 1 Nov 2019 | £135,000 | Terraced | Freehold |
| 69, William Street NP12 1NU | 18 Apr 2019 | £135,000 | Terraced | Freehold |
| 28, William Street NP12 1NW | 11 Apr 2019 | £125,000 | Terraced | Freehold |
| 61, William Street NP12 1NU | 15 Feb 2019 | £128,000 | Terraced | Freehold |
| 60, William Street NP12 1NU | 2 Jul 2018 | £128,000 | Terraced | Freehold |
| 82, William Street NP12 1NU | 26 Jun 2018 | £141,000 | Semi-detached | Freehold |
| 64, William Street NP12 1NU | 9 Feb 2018 | £128,000 | Terraced | Freehold |
| 44, William Street NP12 1NW | 15 Dec 2017 | £115,000 | Terraced | Freehold |
| 61, William Street NP12 1NU | 17 Nov 2017 | £79,000 | Terraced | Freehold |
| 69, William Street NP12 1NU | 10 Nov 2017 | £79,000 | Terraced | Freehold |
| 19, William Street NP12 1NX | 25 Sep 2017 | £112,000 | Terraced | Freehold |
| 10, William Street NP12 1NX | 8 Sep 2017 | £93,000 | Terraced | Freehold |
| 41, William Street NP12 1NW | 8 Sep 2017 | £80,000 | Terraced | Freehold |
| 65, William Street NP12 1NU | 31 Mar 2017 | £124,000 | Terraced | Freehold |
| 37, William Street NP12 1NW | 24 Nov 2016 | £74,000 | Terraced | Freehold |
| 9, William Street NP12 1NX | 4 Oct 2016 | £74,000 | Terraced | Freehold |
| 76, William Street NP12 1NU | 19 Feb 2016 | £101,000 | Terraced | Freehold |
| 19, William Street NP12 1NX | 22 Jan 2016 | £98,000 | Terraced | Freehold |
Sale prices are as recorded by HM Land Registry. Some sales (for example repossessions and company purchases) are listed but left out of the averages.
Sale history: homes sold more than once
| Address | Sales | Change |
|---|---|---|
| 74, William Street | £90,000 (Mar 2021) → £148,000 (Sep 2021) → £200,000 (Aug 2026) | +122% over 5 yrs |
| 69, William Street | £79,000 (Nov 2017) → £135,000 (Apr 2019) → £185,000 (Dec 2025) | +134% over 8 yrs |
| 61, William Street | £79,000 (Nov 2017) → £128,000 (Feb 2019) → £165,000 (Dec 2025) | +109% over 8 yrs |
| 65, William Street | £124,000 (Mar 2017) → £135,000 (Nov 2019) → £174,950 (Jan 2024) → £187,500 (Sep 2025) | +51% over 8 yrs |
| 46, William Street | £135,000 (Jun 2020) → £188,000 (Jun 2025) | +39% over 5 yrs |
| 82, William Street | £141,000 (Jun 2018) → £187,500 (Apr 2025) | +33% over 7 yrs |
| 10, William Street | £93,000 (Sep 2017) → £117,000 (Sep 2020) → £155,000 (Jun 2022) | +67% over 5 yrs |
| 19, William Street | £98,000 (Jan 2016) → £112,000 (Sep 2017) | +14% over 2 yrs |
Buying on William Street?
Crime and flood risk near William Street
Crime
284 crimes were reported within about a mile of William Street in August 2026.
| Violence & sexual offences | 94 |
| Anti-social behaviour | 61 |
| Criminal damage & arson | 39 |
| Public order | 27 |
| Shoplifting | 15 |
| Burglary | 13 |
Source: data.police.uk. Locations are approximate and cover the surrounding area, not just this street.
Flood risk
William Street is not in or near any Environment Agency flood warning or alert area.
Flood warning areas cover places at risk from rivers and the sea. Surface water risk isn't included. Check the long-term flood risk for a postcode on GOV.UK.
Getting around, shops and health
Train stations
- Pengam station 1.6 mi · 31 min walk
- Hengoed station 1.9 mi · 37 min walk
- Gilfach Fargoed station 1.9 mi · 37 min walk
Nearest bus stops
- Pentwyn Road Garage (opp, Pentwyn Road) 4 min walk
- Pentwyn Road Garage (o/s, Pentwyn Road) 4 min walk
- ASDA Car Park (in, Grounds) 4 min walk
- ASDA (o/s, High Street) 5 min walk
GP surgeries
- Sunnybank Health Centre
Bryn Road, Cefn Fforest, Blackwood · 0.6 mi - Blackwood Medical Group
Avicenna Medical Centre, Pontllanfraith Blackwood, Blackwood · 0.8 mi - Pontllanfraith Health Centre
Riverside Medical Practic, Pontllanfraith Health Centre, Blackwood · 0.8 mi - Pengam Health Centre
Glan-Yr-Afon Lane, Fleur De Lis, Blackwood · 1.4 mi
Supermarkets
- Iceland Iceland Blackwood · 0.1 mi
- Farmfoods Farmfoods Cefn Fforest Blackwood · 0.2 mi
- Asda Express Asda Blackwood Express Petrol · 0.2 mi
- Asda Superstore Asda Blackwood Superstore · 0.2 mi
Pharmacies
- Boots · 0.1 mi
- Mayberry Pharmacy · 0.1 mi
- Pontllanfraith Pharmacy Limited · 0.8 mi
Dentists
- Laffan Dental Surgery · 0.1 mi
- Dental Surgery · 0.1 mi
- Dental Surgery · 0.1 mi
Sources: Department for Transport (NaPTAN), NHS England organisation data, and GEOLYTIX Retail Points (open data). Walking times are estimates from straight-line distance.
Area profile
Homes
| Here | Eng & Wales | |
|---|---|---|
| Owned | 73.5% | 62.5% |
| Private rented | 19.6% | 20.3% |
| Social rented | 6.8% | 17.1% |
| Households | 792 |
People
| Here | Eng & Wales | |
|---|---|---|
| Under 15 | 16.1% | 17.4% |
| Aged 15–64 | 63.1% | 64.1% |
| Aged 65+ | 20.8% | 18.6% |
| Residents | 1,737 |
Broadband
| Here | UK | |
|---|---|---|
| Superfast (30Mbit+) | 100% | 95% |
| Ultrafast (300Mbit+) | 100% | 80% |
| Gigabit-capable | 100% | 80% |
Share of homes on this street's postcodes that can get each speed. UK figure is the average across all postcodes. Source: Ofcom Connected Nations.
Mobile signal
| Here | Eng & Wales | |
|---|---|---|
| 4G indoors, all 4 networks | 94% | 89% |
| 4G indoors, at least 1 network | 100% | 100% |
| 4G outdoors, all 4 networks | 100% | 99% |
| Calls indoors, all 4 networks | 96% | 92% |
Share of homes across Caerphilly with good coverage (Jul 2025). Signal varies street by street; check your exact address on Ofcom's checker. Source: Ofcom Connected Nations.
Neighbourhood figures cover the surrounding Lower Layer Super Output Area (about 1,500 residents). Sources: Census 2021 (ONS) and the English Indices of Deprivation 2025.
Energy ratings and home sizes on William Street
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Who lives around William Street
Ethnic group
| Here | Caerphilly | |
|---|---|---|
| White | 97.8% | 97.7% |
| Asian, Asian British or Asian Welsh | 1.3% | 0.9% |
| Other ethnic group | 0.5% | 0.2% |
| Mixed or Multiple ethnic groups | 0.4% | 1% |
| Black, Black British, Black Welsh, Caribbean or African | 0.1% | 0.2% |
Religion
| Here | Caerphilly | |
|---|---|---|
| No religion | 58.1% | 56.7% |
| Christian | 37% | 36.4% |
| Not answered | 4% | 5.7% |
| Hindu | 0.3% | 0.1% |
| Buddhist | 0.2% | 0.2% |
| Muslim | 0.2% | 0.3% |
| Other religion | 0.2% | 0.4% |
| Jewish | 0.1% | – |
Country of birth
| Here | Caerphilly | |
|---|---|---|
| Born in the UK | 95.6% | 97.1% |
| Born outside the UK | 4.4% | 2.9% |
Highest qualification
| Here | Caerphilly | |
|---|---|---|
| Level 4 qualifications and above | 24% | 25.3% |
| No qualifications | 23.2% | 24.1% |
| Level 3 qualifications | 19.6% | 16.8% |
| Level 2 qualifications | 14.6% | 15.5% |
| Level 1 and entry level qualifications | 10% | 10.1% |
| Apprenticeship | 6% | 5.5% |
| Other qualifications | 2.6% | 2.7% |
General health
| Here | Caerphilly | |
|---|---|---|
| Very good health | 43% | 43.7% |
| Good health | 34.5% | 32.1% |
| Fair health | 15.5% | 15.7% |
| Bad health | 5.2% | 6.4% |
| Very bad health | 1.8% | 2.1% |
Cars or vans per household
| Here | Caerphilly | |
|---|---|---|
| 1 car or van in household | 46% | 41.8% |
| 2 cars or vans in household | 26.4% | 27.7% |
| No cars or vans in household | 18.4% | 20.3% |
| 3 or more cars or vans in household | 9.2% | 10.2% |
Source: Census 2021 (ONS), via Nomis. Percentages of usual residents or households, as recorded in March 2021.
Figures cover the surrounding neighbourhood (Lower Layer Super Output Area, about 1,500 residents). Full demographics of Caerphilly.
Planning and heritage near William Street
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Planning applications near William Street
Recent planning applications around William Street from the council's planning register. Choose how far to look:
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Thinking of selling on William Street?
What's my home worth?
Get an instant estimate from what you paid and how prices in Caerphilly have moved since.
Council tax here
Caerphilly Band D is £2,083 a year (Band A £1,389). See every band.
Estate agents near William Street
- Peter Allen 0.1 mi
- Richard Tuck Estate Agent 0.1 mi
- Flying Keys 0.1 mi
- Brinsons Estates 0.2 mi
- Hurley Davies Property Consultants 0.2 mi
Agent locations © OpenStreetMap contributors. More local agents
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