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Get started12 Bowness Avenue is a four-bedroom semi-detached house in Headington, Oxford, Oxford (OX3 0AJ). It has a recorded floor area of 131 m² (around 1410 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (February 2023) shows a C (score 70). When first surveyed in December 2014 the rating was E, the property has climbed 2 bands since. Between certificates, roof efficiency went from Good to Very Good and window efficiency went from Average to Good. The recommended improvements would push it to B (score 84). Records show the property has been extended at some point in its history.
Sale prices here have outpaced Oxford HPI: 8% per year against 0% for the wider region. Today's modelled estimate of £803,000 is 10.8% above the 2023 sale price. On a £-per-square-foot basis, the last sale (£514/sq ft) was about 86.6% above the typical sold price in the postcode. At 131 m² the property is well over the postcode median (95 m² across 22 EPCs), placing it in the larger end of the local stock. 2 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Sold July 2023 for £725,000.
Planning history includes both a loft conversion and an extension — the classic family-home expansion.
Extension: Single storey · Rear of property
Application for prior approval for the erection of a single storey rear extension, which would extend beyond the rear wall of the original house by 5.0m, for which the maximum height would be 4.0m, and for which the height of the eaves would be 2.925m.
12 Bowness Avenue valuation sits well clear of the typical sold price in this postcode.
£803,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.0% per year over 8 years.
£725,000
Growth on file: 8.0% per year over 8 years.
Years Held for 12 Bowness Avenue lags the street by a wide margin.
Price per m²
£5,534
Street avg £3,727
Floor Area
131 m²
Street avg 105 m²
Habitable Rooms
7 rooms
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Bowness Avenue — bus stop.

Daytime· 07:00 – 23:00
50.2dB

Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Window efficiency improved
Roof insulation improved
Are we missing something? Tell us about home improvements to help adjust your valuation.
Rear dormer
27 July 2023Most recent
£725,000
+90.3%over 8 years6 March 2015
£381,000
Median price across the last 5 sales in OX3 0AJ: £515,000 (2025–2019).
Street avg 5 rooms
CO₂ Emissions
4.2 t/year
Street avg 4.6 t/year
OX3 0AG
Closest school
0.2 km
St Joseph's Catholic Primary School, Oxford. 17 schools nearby.
Night-time· 23:00 – 07:00
40.8dB
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