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.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement.
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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Energy performance
173a sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
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
36 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
173a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£271,000
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 CB1 3AN: £454,000 (2024–2016).
Nearby sales in CB1 3AN
Versus other Mill Road homes
On epc rating, 173a runs well behind the street norm.
EPC Rating
39 (E)
Street avg 63 (D)
Floor Area
51 m²
Street avg 49 m²
CO₂ Emissions
4.6 t/year
Street avg 2.5 t/year
Habitable Rooms
2 rooms
Street avg 2 rooms
Everything you need to know about 173a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £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
4/mo
Rising 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