20a, Amwell Road, Cambridge, CB4 2UH
About 20a
20a is a detached house in Cambridge (CB4 2UH). It has a recorded floor area of 24 m² (around 258 sq ft), construction records dating it to 1967-1975 and council tax band A. At 24 m² this is the smallest unit on EPC record across the building (24–97 m²). The building's EPC ratings span E to B across 41 units on file. The latest certificate (April 2023) shows a C (score 71). When first surveyed in October 2011 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Good, roof efficiency went from Very Poor to Good and window efficiency went from Very Poor to Good. Main heating runs on electricity.
Held since October 2003 — that's 23 years off the open market, well above the local norm. Today's modelled estimate of £145,000 sits 141.7% above the 2003 sale of £60,000. On a £-per-square-foot basis, the last sale (£232/sq ft) was about 15.2% above the typical sold price in the postcode. At 24 m² it sits well below the postcode median (57 m² across 40 EPCs), making it one of the more compact homes locally.
Know exactly what you're buying at 20a
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
EPC Rating
Property Improvements
Changes detected from historical EPC data
Low energy lighting percentage decreased
Single glazing replaced with double or better glazing
Cavity wall insulation installed
Roof insulation improved
More low energy lighting installed
Planning history
20a has no planning applications on record.
Notable planning nearby
14applications of note in the surrounding area
We flagged 2 things worth checking at 20a
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
£145,000
Modelled from EPC, postcode comparables.
£60,000
Recorded with HM Land Registry.
Sales timeline
31 October 2003Most recent
£60,000
Median price across the last 5 sales in CB4 2UH: £340,000 (2025–2021).
Nearby sales in CB4 2UH
Everything we know about 20a, 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 Amwell Road homes
Habitable Rooms for 20a runs comfortably ahead of the street norm.
Price per m²
£2,500
Street avg £2,796
Floor Area
24 m²
Street avg 25 m²
Habitable Rooms
2 rooms
Street avg 1 rooms
CO₂ Emissions
2.3 t/year
Street avg 2.3 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
7/mo
Steady year-on-year across the wider district.
Nearest stop
2.0 km
Cambridge North Rail Station — railway station.
Closest school
0.2 km
Cambridge Regional College. 17 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
57.3dB
Night-time· 23:00 – 07:00
47.1dB