15, SEAVIEW AVENUE, BASILDON, SS16 4QZ - £490,000

Based on the January 2025 Price Paid Data (released on 3rd March 2025), the December 2024 House Price Index (released on 19th February 2025), and the January 2025 Energy Performance of Buildings Data (released on 27th February 2025). Sources

15 SEAVIEW AVENUE is a very large extended detached house of 148m², built sometime between 1983 and 1990, which could now be worth an estimated £475,852. It was last sold for £490,000 in March 2023, which was around 27% below the average March 2023 detached price in the Basildon local authority area. The most recent EPC inspection was March 2022, where the current energy rating was C, and the potential energy rating was B.

15 SEAVIEW AVENUE Sold Prices

Land registry data shows five sales for 15 SEAVIEW AVENUE since 1^st January 1995. The below table shows the price paid for the five sales, along with the average detached price in the Basildon local authority area for the corresponding sale date. Most of the five 15 SEAVIEW AVENUE 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
2023 7 MAR	£490,000	£675,200	27% below HPI
2010 29 OCT	£241,395	£347,997	31% below HPI
2006 31 MAR	£317,500	£311,352	2% above HPI
2000 26 MAY	£146,500	£162,414	10% below HPI
1997 31 JAN	£98,000	£109,575	11% below HPI

15 SEAVIEW AVENUE Price Paid vs. HPI Average

The below graph shows the average detached house price in the Basildon local authority area over time, sourced from the HPI. The five 15 SEAVIEW AVENUE sales between January 1997 and March 2023 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 October 2010 sale was for 31% below the HPI. So the extrapolation line tracks at 31% below the HPI over time, until the March 2023 sale, where it rises to 27% below the HPI. The line then continues to track at 27% below the HPI.

What might 15 SEAVIEW AVENUE be worth now?

15 SEAVIEW AVENUE might now be worth an estimated £475,852.

This is based on house price deflation of 2.9%, between March 2023 and December 2024, for detached houses, in the Basildon local authority area, as calculated by the Office for National Statistics and published in their UK House Price Index (HPI).

The 2.9% deflationary decrease is applied to the most recent sale price for 15 SEAVIEW AVENUE of £490,000 on 7th March 2023. For the value to have decreased from £490,000 to £475,852 over the three months to December 2024, the following assumptions must hold true:

• The value of 15 SEAVIEW AVENUE has moved in line with the HPI for detached houses in the Basildon local authority area.
• The March 2023 sale price of £490,000 represented a fair market value for the property.
• The size, condition, and specification of 15 SEAVIEW AVENUE has not materially changed since March 2023.

How Large is 15 SEAVIEW AVENUE?

15 SEAVIEW AVENUE is 148m², which includes two extensions, according to the EPC inspection conducted in March 2022. This puts it in the largest 20% of detached houses houses in Basildon, based on EPC data. The below chart shows the distribution of detached houses houses by size in Basildon, and where 15 SEAVIEW AVENUE lies on this distribution: 82% of detached houses houses are smaller than 15 SEAVIEW AVENUE, and 17% of houses are larger. Note that EPC data is not available for all properties in Basildon.

15 SEAVIEW AVENUE: Plot and Title Map

15 SEAVIEW AVENUE sits on a plot of roughly 0.174 of an acre, or 704m². The below map shows the location of 15 SEAVIEW AVENUE, 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 15 SEAVIEW AVENUE). 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 15 SEAVIEW AVENUE?

15 SEAVIEW AVENUE is located in BASILDON, in the SS16 postcode district. The below map shows the position of No. 15 on SEAVIEW AVENUE.