173a, Mill Road, Cambridge, CB1 3AN
About 173a
173a is a mid-terrace house in Cambridge (CB1 3AN). It has a recorded floor area of 51 m² (around 549 sq ft), construction records dating it to 1900-1929 and council tax band B. The latest certificate (February 2025) shows an E (score 39), well below the UK norm with real room to improve. The rating has held steady at E across 3 certificates since December 2012. Between certificates, roof efficiency went from Average to Very Good, window efficiency went from Very Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Poor and main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 71), a 2-band jump. Main heating runs on electricity.
Today's modelled estimate of £246,000 is 50.8% below the 2026 sale of £500,000, an unusual pattern given regional price growth and worth checking against the EPC condition. On a £-per-square-foot basis, the last sale (£911/sq ft) was about 379.5% above the typical sold price in the postcode. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. It changed hands recently, sold May 2026 for £500,000.
Everything you need to know about 173a
The true value, the hidden risks and the full sale history, in one report.
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The data behind every report
Energy performance
173a sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Certificate validity
Valid until 7 February 2035
Property Improvements
Changes detected from historical EPC data
Heating system changed
Heating controls upgraded for better temperature management
Hot water system upgraded
Single glazing replaced with double or better glazing
Wall insulation improved
More low energy lighting installed
Hot water system upgraded
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has been extended more than once, and has no mains gas supply, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
173a has no planning applications on record.
But the area is active
34 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
173a valuation sits well clear of the typical sold price in this postcode.
£246,000
Modelled from EPC, postcode comparables.
£500,000
Recorded with HM Land Registry.
Sales timeline
7 May 2026Most recent
£500,000
Median price across the last 5 sales in CB1 3AN: £540,000 (2025–2018).
Nearby sales in CB1 3AN
Versus other Mill Road homes
On years held, 173a runs well behind the street norm.
Price per m²
£9,804
Street avg £4,265
Floor Area
51 m²
Street avg 49 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
4.6 t/year
Street avg 2.5 t/year
Everything you need to know about 173a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · from £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
334/mo
Steady year-on-year across the wider district.
Nearest stop
0.7 km
Cambridge Rail Station — railway station.
Closest school
0.4 km
Cambridge Maths School. 30 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode
Daytime· 07:00 – 23:00
48.0dB
Night-time· 23:00 – 07:00
37.2dB