How much is 17 Addison Street, Blackwood, Caerphilly, NP12 1ES worth?
Estimated value — July 2026
£254,000
Likely range £209,000 – £303,000Four in five similar homes sold within their range when we tested it.
Latest recorded sale January 2007
65%
confidence
High
Typically within 9% of the sale price
Property details
Semi-detached house
Addison Street · Blackwood · NP12 1ES
Address
- District
- Caerphilly
- County
- Caerphilly
Value over time
- Modelled value
- Recorded sale
- Likely range (80%)
- Today's estimate
Drawn through each of this property's recorded sales and ending at today's estimate, with the UK House Price Index for its area and property type filling in the months between. A sale we treat with caution is shown but the line doesn't pass through it. The shaded band is where four in five prices fell when we tested this line against real sales of similar homes; it widens the further a month is from a recorded sale, and today it matches the likely range above.
View as a table
| Year | Modelled value | Likely range | Recorded sale |
|---|---|---|---|
| 2002 | £93,297 | £80,505 – £118,061 | £78,950 |
| 2003 | £115,171 | £100,591 – £135,333 | — |
| 2004 | £140,753 | £122,743 – £162,776 | — |
| 2005 | £146,118 | £127,766 – £174,990 | — |
| 2006 | £145,879 | £123,892 – £197,208 | — |
| 2007 | £150,693 | £131,087 – £182,751 | £145,000 |
| 2008 | £135,087 | £117,236 – £157,197 | — |
| 2009 | £132,625 | £114,085 – £153,585 | — |
| 2010 | £129,075 | £110,015 – £149,653 | — |
| 2011 | £136,453 | £115,346 – £159,238 | — |
| 2012 | £130,421 | £109,405 – £152,924 | — |
| 2013 | £132,652 | £110,714 – £155,519 | — |
| 2014 | £142,621 | £118,571 – £167,355 | — |
| 2015 | £145,403 | £120,266 – £170,981 | — |
| 2016 | £147,106 | £120,969 – £173,710 | — |
| 2017 | £158,401 | £129,734 – £187,503 | — |
| 2018 | £170,836 | £139,476 – £203,026 | — |
| 2019 | £174,241 | £142,468 – £207,602 | — |
| 2020 | £186,113 | £152,253 – £222,300 | — |
| 2021 | £209,077 | £171,066 – £250,486 | — |
| 2022 | £235,208 | £192,669 – £281,596 | — |
| 2023 | £232,256 | £196,711 – £270,960 | — |
| 2024 | £242,089 | £202,849 – £284,817 | — |
| 2025 | £244,299 | £202,491 – £289,823 | — |
| 2026 | £254,000 | £209,000 – £303,000 | — |
Sale history
Mortgage calculator
£1,363
Estimated monthly repayment
£228,600
Loan amount
£262,164
Total interest
£490,764
Total repayable
A guide only, based on a capital repayment mortgage held at a constant interest rate for the full term. Not a mortgage offer or financial advice.
Related properties
About this property
17 Addison Street, Blackwood, Caerphilly, NP12 1ES is a semi-detached house on Addison Street in Blackwood, Caerphilly. Stede's estimated value for July 2026 is £254,000. Four in five similar homes sold within their likely range when tested; for this property that range is £209,000 to £303,000. It combines its own last sale brought up to date with the House Price Index (75%) and recent sales of 100 similar homes in the same postcode sector (25%). The confidence score is 65 out of 100 (high): estimates like this one are typically within 9% of the eventual sale price.
It last sold in January 2007 for £145,000. It has 2 sales on record, the earliest in 2002. The current estimate is 75% higher than that price. The current owner has held it for about 19 years.
The modelled value is up 5% over the past year and up 25% over the past five years.
Among 4 nearby properties Stede tracks in the NP12 area, estimated values run from £183,000 to £249,000. This semi-detached house's £254,000 sits above that range.
Common questions
How much is 17 Addison Street, Blackwood, Caerphilly, NP12 1ES worth?
Stede estimates 17 Addison Street, Blackwood, Caerphilly, NP12 1ES is worth £254,000 as of July 2026, within a likely range of £209,000 to £303,000. The estimate is generated automatically from recorded sale prices of this and similar nearby homes and the UK House Price Index, and is not a formal valuation.
When did 17 Addison Street, Blackwood, Caerphilly, NP12 1ES last sell?
It last sold in January 2007 for £145,000. There are 2 sales on record, the earliest in 2002.
What type of property is 17 Addison Street, Blackwood, Caerphilly, NP12 1ES?
It is recorded as a Semi-detached house on Addison Street in the NP12 postcode area.
How reliable is this estimate?
The confidence score is 65 out of 100 (high). Tested against real sales of similar homes, estimates like this one are typically within 9% of the sale price, and four in five sold within their likely range. The figure is a data model, not a RICS valuation or Home Report, and should not be used for mortgage or legal decisions.
How does Stede calculate this estimate?
It combines its own last sale brought up to date with the House Price Index (75%) and recent sales of 100 similar homes in the same postcode sector (25%). Each piece of evidence gets the share that proved most accurate when tested against real sales of similar homes, and the same testing sets the likely range and confidence. Full detail is on the methodology page.
How we got this figure
We weighed the evidence below, giving each piece the share that proved most accurate when we tested it against real sales of similar homes. The likely range and confidence come from testing the same method against 77,975 real sales of similar homes.
- Its sale in January 2007, brought up to today with the House Price Index£260,79675%
- 100 similar homes sold recently in the same postcode sector£232,17525%
Estimate £254,000, likely £209,000 – £303,000
Read the full methodology and data sources →