20b, Windmill Road, Thame, OX9 2DR
About 20b
20b is a detached house in Thame (OX9 2DR). It has a recorded floor area of 107 m² (around 1152 sq ft), construction records dating it to 1967-1975 and council tax band D. The latest certificate (May 2013) shows an E (score 51), well below the UK norm with real room to improve. Earlier certificates rated it D (February 2012); the latest reading is one band lower. Between certificates, wall efficiency dropped from Good to Poor and roof efficiency dropped from Good to Average. The recommended improvements would lift it to C (score 78), a 2-band jump. The latest certificate is from May 2013, so improvements made since then won't be reflected.
Untraded for 19 years, with the last transfer in April 2007. That sale landed at the peak of the pre-credit-crunch market, which is a useful reference point when interpreting the price. At 107 m² the property is well over the postcode median (82 m² across 23 EPCs), placing it in the larger end of the local stock. Today's modelled estimate of £480,000 sits 95.9% above the 2007 sale of £245,000. On a £-per-square-foot basis, the last sale (£213/sq ft) was about 29.3% below the postcode norm.
Know exactly what you're buying at 20b
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
20b's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 13 May 2023
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Low energy lighting percentage decreased
Planning history
20b has no planning applications on record.
Notable planning nearby
2applications of note in the surrounding area
We flagged 1 thing worth checking at 20b
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
The latest sale landed at the peak of the pre-credit-crunch market — a high-water reference point.
£480,000
Modelled from EPC, postcode comparables.
£245,000
Recorded with HM Land Registry.
Sales timeline
26 April 2007Most recent
£245,000
Median price across the last 5 sales in OX9 2DR: £450,000 (2025–2022).
Everything we know about 20b, 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 Windmill Road homes
20b is notably below the street on price per m².
Price per m²
£2,290
Street avg £4,833
Floor Area
107 m²
Street avg 78 m²
Habitable Rooms
4 rooms
Street avg 5 rooms
CO₂ Emissions
6.0 t/year
Street avg 3.7 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Upper High Street — bus stop.
Closest school
0.4 km
John Hampden Primary School. 4 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
46.8dB
Night-time· 23:00 – 07:00
37.6dB