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Formosa Annexe, Mill Lane, Cookham, Maidenhead, SL6 9QT

Property type
Detached
Habitable rooms
7
From EPC
Floor area
136 m²
1464 sq ft
Energy rating
E
Score 39
Council tax
Band F
Tenure
Private Rental
Overview

About Formosa Annexe

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

Formosa Annexe is a detached house in Cookham, Maidenhead, Maidenhead (SL6 9QT). It has a recorded floor area of 136 m² (around 1464 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (August 2025) shows an E (score 39), well below the UK norm with real room to improve. The recommended improvements would lift it to B (score 86), a 3-band jump. Main heating runs on oil.

At 136 m² it sits well below the postcode median (278 m² across 6 EPCs), making it one of the more compact homes locally.

Before you decide

Everything you need to know about Formosa Annexe

The true value, the hidden risks and the full sale history, in one report.

Environmental risk flagged
£14.99one-off

30-day money-back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Energy

Energy performance

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

Formosa Annexe's carbon output runs well above what efficient homes in the postcode produce.

EPC Rating

A
B
C
D
E
E39
F
G
Main Heating
Gas
Main Fuel
Oil
Hot Water
Average
Windows
Poor
CO2 Emissions
8.3 t/year
Occupancy
Rented
Planning

Planning history

Applications and permits filed against Formosa Annexe, Mill Lane, Cookham, Maidenhead, SL6 9QT, sourced from the PlanIt planning register.

Formosa Annexe has no planning applications on record.

The full report still covers planning activity across the surrounding area.

Before you offer

We flagged 1 thing worth checking at Formosa Annexe

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.

  • Environmental risk flagged
£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.

Formosa Annexe has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Current estimate

£961,000

Modelled from EPC, postcode comparables.

See how we calculated this

No sales recorded with HM Land Registry

That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.

Median price across the last 5 sales in SL6 9QT: £485,000 (2006–2001).

On the street

Versus other Mill Lane homes

Four headline reads against 6 similar houses on this street, drawn from the latest EPC and Land Registry data.

On floor area, Formosa Annexe runs well behind the street norm.

EPC Rating

39 (E)

Street avg 44 (E)

Strongly below

Floor Area

136 m²

Street avg 276 m²

Strongly below

CO₂ Emissions

8.3 t/year

Street avg 13.5 t/year

Strongly above

Habitable Rooms

7 rooms

Street avg 8 rooms

On par
Before you decide

Everything you need to know about Formosa Annexe

The true value, the hidden risks and the full sale history, in one report.

Environmental risk flagged
£14.99one-off

30-day money-back guarantee

Preview of the full property report

The data behind every report

  • HM Land Registry, source of sold price history
  • Department for Education, source of schools data
  • Police.uk, source of crime statistics
  • Department for Transport, source of stations and transport links
  • Environment Agency, source of flood risk data
  • Department for Environment, Food & Rural Affairs, source of road noise data
  • PlanIt, source of planning application records
Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
£1m

1 Barnfield Close, Cookham

SL6 9DY

£855k

1 Broom Hill, Cookham

SL6 9LH

5 bed2 bath
£783k

1 Grange Lane, Cookham

SL6 9RP

£1.2m

1 Formosa Court, Mill Lane, Cookham

SL6 9QT

4 bed
£642k

1 Ethel Cottage, New Road, Cookham

SL6 9HD

£635k

1 Albion Cottages, Church Road, Cookham

SL6 9PE

£626k

1 Dean Valley Cottages, Dean Lane, Cookham

SL6 9AL

2 bed1 bath
£600k

1 Coxborrow Close, Cookham

SL6 9HH

4 bed2 bath
Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Maidenhead district page.
Full Maidenhead report

Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.

Crime

5/mo

Steady year-on-year across the wider district.

Nearest stop

0.8 km

Village Memorial — bus stop.

Closest school

0.6 km

Holy Trinity CofE Primary School, Cookham. 5 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 SL6 9QT from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for SL6 9QT

Daytime· 07:00 – 23:00

43.0dB

Low
Night-time road noise heatmap for SL6 9QT

Night-time· 23:00 – 07:00

37.2dB

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 Formosa Annexe, Mill Lane, Cookham, Maidenhead, SL6 9QT. Each answer is also embedded as structured data for search engines.