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Get startedDormer Cottage is a detached house in Ewelme, Wallingford, Wallingford (OX10 6HQ). It has a recorded floor area of 203 m² (around 2185 sq ft) and construction records dating it to 2012 onwards. The latest certificate (July 2025) shows a C (score 70). When first surveyed in November 2018 the rating was G, the property has climbed 4 bands since. Between certificates, wall efficiency went from Very Poor to Very Good, roof efficiency went from Average to Very Good and window efficiency went from Very Poor to Good; while lighting dropped from Very Good to Good. Main heating runs on gas: bulk lpg.
Sale prices here have outpaced England HPI: 4.7% per year against 0% for the wider region. Today's modelled estimate of £764,000 sits 69.8% above the 2023 sale of £450,000. On a £-per-square-foot basis, the last sale (£206/sq ft) was about 47.1% below the postcode norm. At 203 m² the property is well over the postcode median (104 m² across 27 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. 4 planning records sit against the property, 0 approved, 0 refused. Most recent transfer: May 2023 at £450,000.
Dormer Cottage ranks among the most efficient homes in the postcode for energy use.
Discharge of condition 4(Landscaping) on application P23/S2343/HH (Two storey rear and first floor side extensions and alterations).
Dormer Cottage has more than doubled in price since the earliest registered sale in 2002.
£764,000
Modelled from EPC, postcode comparables and a sale-price growth of 4.7% per year over 20 years.
£450,000
Growth on file: 4.7% per year over 20 years.
Dormer Cottage outperforms the street on epc rating by a wide margin.
Price per m²
£2,217
Street avg £6,577
Floor Area
203 m²
Street avg 122 m²
CO₂ Emissions
3.9 t/year
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

Daytime· 07:00 – 23:00
44.5dB

Changes detected from historical EPC data
Upgraded to gas central heating
Fuel source changed
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Cavity wall insulation installed
Loft insulation upgraded to recommended levels
Floor insulation added or improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
Erection of two bay carport.
2 more applications for this property
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2 May 2023Most recent
£450,000
+34.3%over 16 years19 December 2006
£335,000
+91.4%over 4 years8 November 2002
£175,000
Median price across the last 5 sales in OX10 6HQ: £695,900 (2025–2024).
Street avg 7.0 t/year
Years Held
3 years
Street avg 9 years
Village Store — bus stop.
Closest school
0.4 km
Ewelme CofE Primary School. 3 schools nearby.
Night-time· 23:00 – 07:00
36.6dB
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