12, TWISS SQUARE, WINCHESTER, SO23 7FF - £435,000

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.

12 TWISS SQUARE is a very small extended semi-detached house of 74m², built sometime between 2007 and 2011, which could now be worth an estimated £434,028. It was last sold for £435,000 in January 2026, which was around 7% below the average January 2026 semi-detached price in the Winchester local authority area. The most recent EPC inspection was March 2019, where the current energy rating was C, and the potential energy rating was B.

12 TWISS SQUARE Sold Prices

Land registry data shows three sales for 12 TWISS SQUARE since 1^st January 1995. The below table shows the price paid for the three sales, along with the average semi-detached price in the Winchester local authority area for the corresponding sale date. One of the three 12 TWISS SQUARE sales was for below the average price, whilst two were for above 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
2026 30 JAN	£435,000	£469,707	7% below HPI
2015 5 JUN	£395,000	£367,706	7% above HPI
2009 28 MAY	£288,000	£243,636	18% above HPI

12 TWISS SQUARE Price Paid vs. HPI Average

The below graph shows the average semi-detached house price in the Winchester local authority area over time, sourced from the HPI. The three 12 TWISS SQUARE sales between May 2009 and January 2026 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 June 2015 sale was for 7% above the HPI. So the extrapolation line tracks at 7% above the HPI over time, until the January 2026 sale, where it falls to 7% below the HPI. The line then continues to track at 7% below the HPI.

What might 12 TWISS SQUARE be worth now?

12 TWISS SQUARE might now be worth an estimated £434,028.

This is based on house price deflation of 0.2%, between January 2026 and April 2026, for semi-detached houses, in the Winchester local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 0.2% deflationary decrease is applied to the most recent sale price for 12 TWISS SQUARE of £435,000 on 30th January 2026. For the value to have decreased from £435,000 to £434,028 over the nine months to April 2026, the following assumptions must hold true:

• The value of 12 TWISS SQUARE has moved in line with the HPI for semi-detached houses in the Winchester local authority area.
• The January 2026 sale price of £435,000 represented a fair market value for the property.
• The size, condition, and specification of 12 TWISS SQUARE has not materially changed since January 2026.

How Large is 12 TWISS SQUARE?

12 TWISS SQUARE is 74m², which includes one extension, according to the EPC inspection conducted in March 2019. This puts it in the smallest 10% of semi-detached houses houses in Winchester, based on EPC data. The below chart shows the distribution of semi-detached houses houses by size in Winchester, and where 12 TWISS SQUARE lies on this distribution: 3% of semi-detached houses houses are smaller than 12 TWISS SQUARE, and 97% of houses are larger. Note that EPC data is not available for all properties in Winchester.

12 TWISS SQUARE: Plot and Title Map

12 TWISS SQUARE sits on a plot of roughly 0.033 of an acre, or 133m². The below map shows the location of 12 TWISS SQUARE, 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 12 TWISS SQUARE). 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.

Where is 12 TWISS SQUARE?

12 TWISS SQUARE is located in WINCHESTER, in the SO23 postcode district. The below map shows the position of No. 12 on TWISS SQUARE.