House prices on Lock Island
Median value — November 2026
£735,500
Modelled from 6 properties Stede tracks in Lock Island
Market snapshot
£735,500
Median value
£815,500
Average value
0
Sales in the last 12 months
-1%
Change over the past year
Value over time
- Modelled value
- Projected
Modelled month by month from the UK House Price Index, averaged across every property type Stede tracks here.
View as a table
| Year | Modelled value |
|---|---|
| 2000 | £240,710 |
| 2001 | £269,464 |
| 2002 | £314,836 |
| 2003 | £338,509 |
| 2004 | £370,298 |
| 2005 | £373,789 |
| 2006 | £407,749 |
| 2007 | £450,990 |
| 2008 | £390,701 |
| 2009 | £398,890 |
| 2010 | £415,779 |
| 2011 | £420,442 |
| 2012 | £433,654 |
| 2013 | £451,663 |
| 2014 | £505,719 |
| 2015 | £558,034 |
| 2016 | £600,612 |
| 2017 | £626,396 |
| 2018 | £618,685 |
| 2019 | £607,260 |
| 2020 | £634,524 |
| 2021 | £656,309 |
| 2022 | £705,850 |
| 2023 | £696,746 |
| 2024 | £705,673 |
| 2025 | £711,367 |
| 2026 | £706,500 |
There aren't enough recorded sales on Lock Island alone to model a trend for it, so this line shows Marlow instead.
Property types
- Detached house100%£735,500
Recent sales
- White Cottage, Lock Island, Marlow, Buckinghamshire, SL7 1QE£950,000 · 2021£1,118,000
- The Dacha, Lock Island, Marlow, Buckinghamshire, SL7 1QE£485,000 · 2020£582,000
- The Wilding, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£830,000 · 2017£1,022,000
- The Chalet, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£410,000 · 2013£750,000
- Formosa, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£352,000 · 2011£700,000
- Kingfishers, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£375,000 · 2007£721,000
Addresses in Lock Island
- Formosa, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£352,000 · 2011£700,000
- Kingfishers, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£375,000 · 2007£721,000
- The Chalet, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£410,000 · 2013£750,000
- The Dacha, Lock Island, Marlow, Buckinghamshire, SL7 1QE£485,000 · 2020£582,000
- The Wilding, Lock Island, Marlow, Wycombe, Buckinghamshire, SL7 1QE£830,000 · 2017£1,022,000
- White Cottage, Lock Island, Marlow, Buckinghamshire, SL7 1QE£950,000 · 2021£1,118,000
About this area
Lock Island, in Marlow, is a street. Stede can model 6 properties there, from HM Land Registry Price Paid Data and the UK House Price Index.
As of November 2026, Lock Island has a median estimated value of £735,500 and an average of £815,500.
Modelled values in Lock Island are -1% over the past year and +8% over five years.
The market here is mostly detached houses, which make up 100% of the properties Stede tracks in Lock Island.
Common questions
What is the average house price in Lock Island?
As of November 2026, the average estimated value is £815,500 and the median is £735,500 across 6 properties Stede tracks in Lock Island. This is not a formal market valuation.
Are house prices in Lock Island going up or down?
Modelled values in Lock Island are -1% over the past year and +8% over five years, based on the UK House Price Index.
What types of property are in Lock Island?
100% of the properties Stede tracks in Lock Island are detached houses.
How many properties are in Lock Island?
Stede can model 6 properties in Lock Island, with 0 recorded sales in the past 12 months.
How does Stede calculate house prices for Lock Island?
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources used for every individual property valuation on Stede. Full detail is on the methodology page.
How we calculate this
These figures are modelled from HM Land Registry Price Paid Data and the UK House Price Index — the same sources behind every individual property valuation on Stede.
Read the full methodology and data sources →