Windsor House, Apartment 14, Dean Street, Marlow, SL7 3AA
About Windsor House
Windsor House is a detached house in Marlow (SL7 3AA). It has a recorded floor area of 53 m² (around 570 sq ft). At 53 m² this is the smallest unit on EPC record across Windsor House (53–96 m²). The building's EPC ratings span C to B, with this unit at the bottom. On EPC score it ranks last in the building (80 versus a best of 86). The latest certificate (October 2019) shows a C (score 80), near the top of the C band.
Today's modelled estimate of £281,000 is 16.7% below the 2020 sale of £337,500, an unusual pattern given regional price growth and worth checking against the EPC condition. At 53 m² it sits well below the postcode median (87 m² across 22 EPCs), making it one of the more compact homes locally. It lags the bulk of the postcode on energy efficiency (less efficient than 86% of similar EPCs). Most recent transfer: February 2020 at £337,500.
Know exactly what you're buying at Windsor House
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Windsor House's carbon output is low for the local stock.
EPC Rating
Planning history
Windsor House has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 1 thing worth checking at Windsor House
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Latest sale on Windsor House was the lowest on Land Registry record across the postcode.
£281,000
Modelled from EPC, postcode comparables.
£337,500
Recorded with HM Land Registry.
Sales timeline
21 February 2020Most recent
£337,500
Median price across the last 5 sales in SL7 3AA: £720,000 (2025–2022).
Nearby sales in SL7 3AA
Windsor House, Apartment 5, Dean Street, Marlow, SL7 3AA
Sold Feb 2025
£790,00011 Dean Street, Marlow, SL7 3AA
Sold Mar 2023
£467,500Windsor House, Apartment 9, Dean Street, Marlow, SL7 3AA
Sold Aug 2022
£625,000Windsor House, Apartment 11, Dean Street, Marlow, SL7 3AA
Sold Mar 2022
£850,000Windsor House, Apartment 4, Dean Street, Marlow, SL7 3AA
Sold Mar 2022
£720,000
Everything we know about Windsor House, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby
Versus other Dean Street homes
Floor Area for Windsor House lags the street by a wide margin.
Price per m²
£6,368
Street avg £7,209
Floor Area
53 m²
Street avg 80 m²
CO₂ Emissions
1.1 t/year
Street avg 1.5 t/year
Years Held
6 years
Street avg 5 years
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Dean Street Car Park — bus stop.
Closest school
0.2 km
Holy Trinity Church of England (Aided) School. 11 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
51.1dB
Night-time· 23:00 – 07:00
41.4dB