What kind of home is Windsor House, Apartment 9, Dean Street, SL7 3AA?

Windsor House, Apartment 9, Dean Street, SL7 3AA is a 2-bedroom detached house.

When did Windsor House, Apartment 9, Dean Street, SL7 3AA last change hands?

Windsor House, Apartment 9, Dean Street, SL7 3AA last sold for £625,000 in August 2022, around 4 years ago. Before that, it sold for £545,000 in April 2019, so prices have been rising over 3 years on record. Source: HM Land Registry.

Has Windsor House, Apartment 9, Dean Street, SL7 3AA appreciated in value?

Across 2 sales between April 2019 and August 2022, Windsor House, Apartment 9, Dean Street, SL7 3AA rose from £545,000 to £625,000, a change of £80,000. That works out to roughly +4.1% per year compounded over 3 years. Source: HM Land Registry.

How energy efficient is Windsor House, Apartment 9, Dean Street, SL7 3AA?

The current EPC rating for Windsor House, Apartment 9, Dean Street, SL7 3AA is B with a score of 84 out of 100, lodged in July 2018. It has improved from a F recorded in October 2012 (4 bands). Source: EPC Register.

How big is Windsor House, Apartment 9, Dean Street, SL7 3AA?

Windsor House, Apartment 9, Dean Street, SL7 3AA has a recorded floor area of 88 m² (947 sq ft), around 44 m² per bedroom. That makes it about 21% larger than the median EPC-recorded property in SL7 3AA. Source: EPC Register.

What heating system does Windsor House, Apartment 9, Dean Street, SL7 3AA use?

The latest EPC at Windsor House, Apartment 9, Dean Street, SL7 3AA records mains gas as the main heating fuel. Source: EPC Register.

Which area is Windsor House, Apartment 9, Dean Street, SL7 3AA in?

Windsor House, Apartment 9, Dean Street, SL7 3AA sits in Marlow. It falls within the SL7 postcode district in Buckinghamshire.

Is Windsor House, Apartment 9, Dean Street, SL7 3AA in a safe area?

Police records around Windsor House, Apartment 9, Dean Street, SL7 3AA show an average of 3 reported crimes per month over the last 10 months. Violent crime makes up roughly 52% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

What schools are near Windsor House, Apartment 9, Dean Street, SL7 3AA?

The closest primary school to Windsor House, Apartment 9, Dean Street, SL7 3AA is Holy Trinity Church of England (Aided) School (240m), one of 9 primaries within walking distance. The closest secondary is Sir William Borlase's Grammar School (490m), with 2 secondaries in the surrounding area.

How well connected is Windsor House, Apartment 9, Dean Street, SL7 3AA?

The closest bus stop to Windsor House, Apartment 9, Dean Street, SL7 3AA is Dean Street Car Park, 55m away. The nearest rail option is Marlow Rail Station, 759m away.

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Windsor House, Apartment 9, Dean Street, Marlow, SL7 3AA

EPC B

Property type

Semi-detached

Floor top floor

Bedrooms

Floor area

88 m²

947 sq ft

Energy rating

Score 84

Overview

About Windsor House

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

Windsor House is a two-bedroom semi-detached house in Marlow (SL7 3AA). It has a recorded floor area of 88 m² (around 947 sq ft) and construction records dating it to 1900-1929. The latest certificate (July 2018) returns a B (score 84), comfortably above the UK average. When first surveyed in October 2012 the rating was F, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Very Poor to Good and window efficiency went from Good to Very Good. At 88 m² this is the 10th 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. Other recorded features include a balcony.

Across 2019–2022, sale prices on this property compounded at 4.1% per year. Most recent transfer: August 2022 at £625,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you offer

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

Larger development activity nearby

£14.99

Trusted by UK homebuyers

Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

Bedrooms2

Outside

Private gardenYes
ParkingAllocated
BalconyYes

Building

Heating systemElectric
Underfloor heatingYes
RefurbishedYes

Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Windsor House's carbon output is low for the local stock.

Current Certificate(1 of 3)

Jul 2018

EPC Rating

B84

Main Heating

Electric & Gas

Main Fuel

Gas

Hot Water

Good

Windows

Very Good

CO2 Emissions

1.1 t/year

Occupancy

—

Property Improvements

Changes detected from historical EPC data

Jun 2018from Oct 2012

EPC improved fromF25toE39

Walls

Very PoorPoor

Wall insulation improved

Roof Insulation

UninsulatedWell Insulated

Loft insulation installed or upgraded to 250mm+

Low Energy Lighting

0%100%

More low energy lighting installed

Jul 2018from Jun 2018

EPC improved fromE39toB84

Heating System

Room HeatersGas Boiler

Upgraded to gas central heating

Main Fuel

ElectricGas

Connected to mains gas supply

Heating Controls

Prog + StatFull Control

Heating controls upgraded for better temperature management

Hot Water

ImmersionMain System

Hot water system upgraded

Windows

Full DoubleHigh Performance

High performance glazing installed

Wall Insulation

Uninsulated SolidInsulated Cavity

Cavity wall insulation installed

Planning

Planning history

Applications and permits filed against Windsor House, Apartment 9, Dean Street, Marlow, SL7 3AA, sourced from the PlanIt planning register.

Windsor House has no planning applications on record.

Notable planning nearby

1applications of note in the surrounding area

Before you offer

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

£14.99

30-day money-back guarantee

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

The latest sale landed in the post-pandemic price surge — useful context when reading the figure.

Current estimate

£671,000

Modelled from EPC, postcode comparables and a sale-price growth of 4.1% per year over 3 years.

See how we calculated this

Last sold (2022)

£625,000

Growth on file: 4.1% per year over 3 years.

Sales timeline

25 August 2022Most recent
£625,000
+14.7%over 3 years
11 April 2019
£545,000

Median price across the last 5 sales in SL7 3AA: £720,000 (2025–2020).

Nearby sales in SL7 3AA

Before you offer

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

£14.99

Trusted by UK homebuyers

On the street

Versus other Dean Street homes

Four headline reads against 22 similar flats on this street, drawn from the latest EPC and Land Registry data.

On years held, Windsor House runs well behind the street norm.

Price per m²

£7,102

Street avg £7,148

On par

Floor Area

88 m²

Street avg 78 m²

On par

CO₂ Emissions

1.1 t/year

Street avg 1.5 t/year

Above

Years Held

4 years

Street avg 6 years

Strongly below

Comparables

Similar properties nearby

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.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around SL7 3AA from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

51.1dB

Low

Night-time road noise heatmap for SL7 3AA

Night-time· 23:00 – 07:00

41.4dB

Low

55 dB

60 dB

65 dB

70 dB

75 dB

80 dB

Defra Road Noise Strategic Mapping, Round 4

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about Windsor House, Apartment 9, Dean Street, Marlow, SL7 3AA. Each answer is also embedded as structured data for search engines.