20 St Marys Street, Ely, CB7 4ES
About 20 St Marys Street
20 St Marys Street is a three-bedroom semi-detached house in Ely (CB7 4ES). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to before 1900 and council tax band D. The latest certificate (September 2019) shows an E (score 47), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since July 2009. Between certificates, window efficiency went from Very Poor to Poor; while hot-water efficiency dropped from Good to Average. The recommended improvements would lift it to B (score 81), a 3-band jump.
Held since November 2010 — that's 16 years off the open market, well above the local norm. At 86 m² the property is well over the postcode median (58 m² across 13 EPCs), placing it in the larger end of the local stock. It lags the bulk of the postcode on energy efficiency (less efficient than 77% of similar EPCs). Today's modelled estimate of £359,000 sits 75.1% above the 2010 sale of £205,000. On a £-per-square-foot basis, the last sale (£221/sq ft) was about 22% below the postcode norm. One planning record on file: new windows approved in 2011. Past consents include new windows, meaningful when judging how the property has evolved.
Know exactly what you're buying at 20 St Marys Street
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
What this property has
Inside
- Bedrooms3
- Bathrooms1
Building
- Central heatingYes
Energy performance
20 St Marys Street's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system changed
Single glazing replaced with double or better glazing
Planning history
- Mar 2011RenovationHeritageIn report
Replacement of three casement windows with new sash windows and replacement of existing back door.
New Windows- Documents
- 16 docs on file
- Reference
- 11/00006/LBC
We flagged 1 thing worth checking at 20 St Marys Street
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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
20 St Marys Street valuation sits well clear of the typical sold price in this postcode.
£359,000
Modelled from EPC, postcode comparables.
£205,000
Recorded with HM Land Registry.
Sales timeline
3 November 2010Most recent
£205,000
18 July 2006
£205,000
Median price across the last 5 sales in CB7 4ES: £730,000 (2023–2018).
Nearby sales in CB7 4ES
Everything we know about 20 St Marys Street, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other St Marys Street homes
20 St Marys Street outperforms the street on floor area by a wide margin.
Price per m²
£2,384
Street avg £2,677
Floor Area
86 m²
Street avg 65 m²
Habitable Rooms
4 rooms
Street avg 3 rooms
CO₂ Emissions
6.5 t/year
Street avg 3.3 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
1.1 km
Ely Rail Station — railway station.
Closest school
0.8 km
Ely College. 6 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
48.5dB

Night-time· 23:00 – 07:00
38.5dB