The information on this page is based on a number of underlying datasets, most of which are updated monthly. We maintain an update schedule which explains which version of each dataset we are currently relying on.
19 UNION STREET is a very small extended detached house of 52m², built sometime before 1900, which could now be worth an estimated £109,745. It was last sold for £79,000 in May 2007, which was around 56% below the average May 2007 detached price in the Boston local authority area. The most recent EPC inspection was December 2019, where the current energy rating was E, and the potential energy rating was B.
Land registry data shows two sales for 19 UNION STREET since 1st January 1995. The below table shows the price paid for the two sales, along with the average detached price in the Boston local authority area for the corresponding sale date. Both of the two 19 UNION STREET sales were for below the average price. The average price is sourced from the Office for National Statistics' House Price Index (HPI).
| Date | Price | HPI Price | Variation from HPI |
|---|---|---|---|
2007 9 MAY | £79,000 | £181,362 | 56% below HPI |
2003 30 DEC | £62,500 | £146,886 | 57% below HPI |
The below graph shows the average detached house price in the Boston local authority area over time, sourced from the HPI. The two 19 UNION STREET sales from December 2003 and May 2007 have been plotted on the graph. A line has been extrapolated to show what the value of the property might have been over time, following each sale, had it maintained the same margin above or below the HPI (as a percentage). For example, the December 2003 sale was for 57% below the HPI. So the extrapolation line tracks at 57% below the HPI over time, until the May 2007 sale, where it rises to 56% below the HPI. The line then continues to track at 56% below the HPI.

19 UNION STREET might now be worth an estimated £109,745.
This is based on house price inflation of 38.9%, between May 2007 and August 2025, for detached houses, in the Boston local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).
The 38.9% inflationary increase is applied to the most recent sale price for 19 UNION STREET of £79,000 on 9th May 2007. For the value to have increased from £79,000 to £109,745 over the seventeen years and nine months to August 2025, the following assumptions must hold true:
19 UNION STREET is 52m², which includes two extensions, according to the EPC inspection conducted in December 2019. This puts it in the smallest 10% of detached houses houses in Boston, based on EPC data. The below chart shows the distribution of detached houses houses by size in Boston, and where 19 UNION STREET lies on this distribution: 1% of detached houses houses are smaller than 19 UNION STREET, and 99% of houses are larger. Note that EPC data is not available for all properties in Boston.

19 UNION STREET sits on a plot of roughly 0.021 of an acre, or 87m². The below map shows the location of 19 UNION STREET, an approximate outline of the building(s), and the indicative extent of the property. The plot extent is a Land Registry INSPIRE Index Polygon, and it is important to note that a title may include more than one polygon, whereas only one polygon is shown on the map (the polygon which intersects with the position of 19 UNION STREET). The full extent of the land contained in any registered title can only be identified from the individual title plan. The maps on this page should not be relied upon to establish the extent of a title.

19 UNION STREET is located in BOSTON, in the PE21 postcode district. The below map shows the position of No. 19 on UNION STREET.

Most recent sales first: