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18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF

How much is 18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF worth?

Estimated value — November 2026

£808,000

Likely range £641,000 – £927,000Four in five similar homes sold within their range when we tested it.

Latest recorded sale July 1999

64%

confidence

Medium

Typically within 9% of the sale price

Property details

Semi-detached house

Windermere Avenue · Ruislip · HA4 9RF

128 m²1,378 sq ftFloor area
1930-1949Built
Mains gas boilerHeating

Energy performance

Current ratingC73
PotentialB84

Mains Gas (Not Community) · EPC 0992-1002-2203-7749-1204 · inspected July 2021

Address

District
Hillingdon
County
Greater London
See house prices in HA4 →

Value over time

  • Modelled value
  • Projected
  • Likely range (80%)
  • Today's estimate
£0£200k£400k£600k£800k£1m20002002200420062008201020122014201620182020202220242026£808,000

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. 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
Modelled value at the end of each year, with any recorded sales
YearModelled valueLikely range
2000£207,748£180,640 – £245,266
2001£233,499£201,521 – £269,449
2002£286,275£244,586 – £329,422
2003£311,577£263,579 – £359,284
2004£330,067£276,626 – £382,346
2005£331,885£275,952 – £384,707
2006£355,093£293,482 – £410,807
2007£394,314£323,843 – £456,009
2008£358,647£292,216 – £415,524
2009£366,502£296,276 – £425,593
2010£383,262£307,813 – £446,043
2011£397,114£317,915 – £463,560
2012£413,266£330,706 – £483,494
2013£440,681£352,166 – £517,659
2014£507,191£405,137 – £596,722
2015£599,906£524,749 – £653,461
2016£648,233£562,074 – £709,628
2017£647,869£556,815 – £712,752
2018£657,405£559,993 – £726,818
2019£655,007£552,952 – £727,729
2020£699,256£584,971 – £780,693
2021£712,524£590,632 – £799,381
2022£780,378£640,923 – £879,750
2023£747,700£608,379 – £846,977
2024£772,372£622,559 – £879,125
2025£789,130£630,045 – £902,490
2026£808,000£641,000 – £927,000

Sale history

1999Sold
£165,000
2026Today — estimated
+390%£808,000

Mortgage calculator

£4,337

Estimated monthly repayment

£727,200

Loan amount

£833,970

Total interest

£1,561,170

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

18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF is a semi-detached house on Windermere Avenue in Ruislip, Greater London. Stede's estimated value for November 2026 is £808,000. Four in five similar homes sold within their likely range when tested; for this property that range is £641,000 to £927,000. It combines their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 107 similar homes in the same postcode sector (25%). The confidence score is 64 out of 100 (medium): estimates like this one are typically within 9% of the eventual sale price.

It last sold in July 1999 for £165,000. The current estimate is 390% higher than that price. The current owner has held it for about 27 years.

Its EPC energy-efficiency rating is band C (73 out of 100), with a potential of band B (84) after the recommended improvements. The certificate records a total floor area of 128 m² (1,378 sq ft). It was lodged in July 2021.

The modelled value is up 3% over the past year and up 13% over the past five years.

Among 10 nearby properties Stede tracks in the HA4 area, estimated values run from £647,000 to £991,000. This semi-detached house's £808,000 sits toward the upper end of that range.

Common questions

How much is 18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF worth?

Stede estimates 18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF is worth £808,000 as of November 2026, within a likely range of £641,000 to £927,000. 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 18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF last sell?

It last sold in July 1999 for £165,000.

What type of property is 18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF?

It is recorded as a Semi-detached house on Windermere Avenue in the HA4 postcode area.

What is the EPC rating of 18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF?

18 Windermere Avenue, Ruislip, Hillingdon, Greater London, HA4 9RF has an EPC energy-efficiency rating of band C (73 out of 100). Its potential rating after the recommended improvements is band B (84). The certificate records a floor area of 128 m² (1,378 sq ft). EPC data is published by the Ministry of Housing, Communities & Local Government and reflects the most recent certificate on record.

How reliable is this estimate?

The confidence score is 64 out of 100 (medium). 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 their price per m² applied to its floor area (50%), its own last sale brought up to date with the House Price Index (25%) and recent sales of 107 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 19,418 real sales of similar homes.

  • Recent price per m² in the same postcode sector, for its 128 m²£916,49550%
  • Its sale in July 1999, brought up to today with the House Price Index£729,01225%
  • 107 similar homes sold recently in the same postcode sector£669,82625%

Estimate £808,000, likely £641,000 – £927,000

Read the full methodology and data sources →