20 Hampden Avenue, Thame, OX9 2DT
About 20 Hampden Avenue
20 Hampden Avenue is a three-bedroom semi-detached house in Thame (OX9 2DT). It has a recorded floor area of 125 m² (around 1345 sq ft), construction records dating it to 1930-1949 and council tax band C. The latest certificate (August 2022) shows a C (score 71). When first surveyed in June 2014 the rating was E, the property has climbed 2 bands since. Between certificates, window efficiency went from Average to Good. The recommended improvements would push it to B (score 84). Other recorded features include outbuildings.
At 125 m² the property is well over the postcode median (74 m² across 30 EPCs), placing it in the larger end of the local stock. Across 1998–2022, sale prices on this property compounded at 8.9% per year. On a £-per-square-foot basis, the last sale (£446/sq ft) was about 53.2% above the typical sold price in the postcode. Last sale on file: £600,000 in November 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. One historical planning record sits against the property in 2016.
Know exactly what you're buying at 20 Hampden Avenue
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
- Bedrooms3
- Bathrooms2
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenYes
- ParkingOff street
- OutbuildingsYes
Building
- RefurbishedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
More low energy lighting installed
Planning history
- Jan 2016PorchFullIn report
Extension: Rear of property
Two storey rear extension and proposed front porch
Extension- Documents
- 10 docs on file
- Reference
- P15/S3911/HH
We flagged 1 thing worth checking at 20 Hampden Avenue
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
Price for 20 Hampden Avenue has grown more than fourfold since the 1998 starting point.
£599,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.9% per year over 24 years.
£600,000
Growth on file: 8.9% per year over 24 years.
Sales timeline
18 November 2022Most recent
£600,000
+98.3%over 7 years4 June 2015
£302,550
+287.9%over 16 years27 November 1998
£78,000
Median price across the last 5 sales in OX9 2DT: £450,000 (2025–2022).
Everything we know about 20 Hampden Avenue, 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 Hampden Avenue homes
Floor Area for 20 Hampden Avenue runs comfortably ahead of the street norm.
Price per m²
£4,800
Street avg £4,117
Floor Area
125 m²
Street avg 81 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.5 t/year
Street avg 3.5 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
Thame Area Pick Up Zone — bus stop.
Closest school
0.3 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
47.3dB

Night-time· 23:00 – 07:00
37.9dB