Windsor House, Apartment 6, Dean Street, Marlow, SL7 3AA
About Windsor House
Windsor House is a one-bedroom detached house in Marlow (SL7 3AA). It has a recorded floor area of 57 m² (around 614 sq ft). The latest certificate (July 2018) returns a B (score 83), comfortably above the UK average. At 57 m² this is the 3rd smallest of 16 units on EPC record in Windsor House, where floor areas span 53–96 m². The building's EPC ratings span C to B, with this unit at the top. The property has underfloor heating on record, all of which lower running costs and tend to lift resale appeal.
At 57 m² it sits well below the postcode median (87 m² across 22 EPCs), making it one of the more compact homes locally. Last sale on file: £390,000 in June 2019.
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
What this property has
Inside
- Bedrooms1
Outside
- Communal gardenYes
- ParkingAllocated
Building
- Heating systemElectric
- Underfloor heatingYes
- RefurbishedYes
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
Windsor House valuation runs notably under the typical sold price in this postcode.
£377,000
Modelled from EPC, postcode comparables.
£390,000
Recorded with HM Land Registry.
Sales timeline
27 June 2019Most recent
£390,000
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
Windsor House outperforms the street on co₂ emissions by a wide margin.
Price per m²
£6,842
Street avg £7,169
Floor Area
57 m²
Street avg 80 m²
CO₂ Emissions
0.8 t/year
Street avg 1.5 t/year
Years Held
7 years
Street avg 5 years
Similar properties nearby
Flat 2, 89 Seymour Court Road
SL7 3BQ
Flat 3, 89 Seymour Court Road
SL7 3BQ
Bank Apartments, Flat 2, Dean Street
SL7 3DX
Bank Apartments, Flat 4, Dean Street
SL7 3DX
Bank Apartments, Flat 1, Dean Street
SL7 3DX
Flat 6, 89 Seymour Court Road
SL7 3BQ
Bank Apartments, Flat 5, Dean Street
SL7 3DX
Flat 5, 89 Seymour Court Road
SL7 3BQ
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