21a, Flat 2, Cave Street, Oxford, OX4 1BA
About 21a
21a is a semi-detached house in Oxford (OX4 1BA). It has a recorded floor area of 31 m² (around 334 sq ft) and construction records dating it to 2012 onwards. At 31 m² this is the smallest unit on EPC record across 21a (31–40 m²). The latest certificate (August 2023) shows a C (score 79), near the top of the C band. The rating has held steady at C across 2 certificates since August 2013. Between certificates, wall efficiency went from Good to Very Good and lighting went from Good to Very Good.
At 31 m² it sits well below the postcode median (55 m² across 20 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 21a
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
21a's carbon output is low for the local stock.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Wall insulation upgraded
Planning history
21a has no planning applications on record.
Notable planning nearby
63applications of note in the surrounding area
We flagged 2 things worth checking at 21a
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.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
21a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£229,000
Modelled from EPC, postcode comparables.
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 OX4 1BA: £408,000 (2025–2018).
Everything we know about 21a, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby
Versus other Cave Street homes
On floor area, 21a runs well behind the street norm.
EPC Rating
79 (C)
Street avg 79 (C)
Floor Area
31 m²
Street avg 35 m²
CO₂ Emissions
0.8 t/year
Street avg 0.9 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Glebe Street — bus stop.
Closest school
0.4 km
East Oxford Primary School. 29 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
49.9dB
Night-time· 23:00 – 07:00
42.4dB