20a, Cromwell Road, Ascot, SL5 9DG
About 20a
20a is a detached house in Ascot (SL5 9DG). It has a recorded floor area of 151 m² (around 1625 sq ft), construction records dating it to 1900-1929 and council tax band F. The latest certificate (February 2026) shows a D (score 61), on the cusp of jumping into the C band. When first surveyed in March 2009 the rating was F, the property has climbed 2 bands since. Between certificates, hot-water efficiency went from Average to Good, lighting went from Very Poor to Good and main heating went from Average to Good; while wall efficiency dropped from Good to Poor and roof efficiency dropped from Average to Poor. The recommended improvements would push it to C (score 77). This certificate was lodged in the last six months, so the rating reflects current condition.
At 151 m² the property is well over the postcode median (83 m² across 27 EPCs), placing it in the larger end of the local stock. 3 planning records sit against the property, 1 approved, 2 refused. Past consents include partial demolition, meaningful when judging how the property has evolved.
Everything you need to know about 20a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
20a'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 upgraded
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Apr 2025DemolitionFullIn report
2no. semi-detached three bedroom dwellings with new access and refuse/cycle storage following the demolition of the existing dwelling.
- Documents
- 46 docs on file
- Reference
- 22/02992/FULL
- Feb 2020New BuildFullIn report
Construction of 4 flats with off street parking and provision for refuse, recycling and cycle storage, following demolition of the existing dwelling.
- Documents
- 59 docs on file
- Reference
- 19/02535/FULL
We flagged 1 thing 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.
- Larger development activity nearby
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Sales history & valuation
20a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£506,000
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 SL5 9DG: £435,000 (2025–2024).
Versus other Cromwell Road homes
On habitable rooms, 20a stands well clear of the street.
EPC Rating
61 (D)
Street avg 57 (D)
Floor Area
151 m²
Street avg 95 m²
CO₂ Emissions
6.4 t/year
Street avg 4.6 t/year
Habitable Rooms
7 rooms
Street avg 4 rooms
Everything you need to know about 20a
The true value, the hidden risks and the full sale history, in one report.
30-day money-back guarantee
The data behind every report
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Victoria Road — bus stop.
Closest school
0.4 km
South Ascot Village Primary School. 7 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
39.7dB