21a, Exchange Road, Ascot, SL5 7AW
About 21a
21a is a semi-detached house in Ascot (SL5 7AW). It has a recorded floor area of 153 m² (around 1647 sq ft), construction records dating it to 2007 onwards and council tax band F. The latest certificate (November 2019) shows a C (score 77), near the top of the C band. Earlier certificates rated it B (August 2010); the latest reading is one band lower. Between certificates, lighting went from Good to Very Good; while wall efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Good. The recommended improvements would push it to B (score 85).
At 153 m² the property is well over the postcode median (115 m² across 19 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 84% of similar EPCs). 2 planning records sit against the property, 1 approved, 1 refused. Past consents include an extension and a garage conversion, meaningful when judging how the property has evolved.
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
Loft insulation upgraded to recommended levels
More low energy lighting installed
Planning history
- Apr 2016Garage ConversionFullIn report
Extension: Single storey · Side of property
Single storey side extension, garage conversion into habitable accommodation and amendments to rear garage elevation
Extension- Documents
- 11 docs on file
- Reference
- 16/00933/FULL
- Feb 2016Garage ConversionOutlineIn report
Extension: Side of property
Certificate of lawfulness to determine whether a single storey side extension and conversion of garage into habitable accommodation with amendments to rear garage elevation are lawful
Extension- Documents
- 9 docs on file
- Reference
- 16/00484/CPD
We flagged 1 thing worth checking at 21a
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
21a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£851,000
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 7AW: £760,000 (2025–2022).
Versus other Exchange Road homes
21a outperforms the street on epc rating by a wide margin.
EPC Rating
77 (C)
Street avg 56 (D)
Floor Area
153 m²
Street avg 117 m²
CO₂ Emissions
3.4 t/year
Street avg 5.6 t/year
Habitable Rooms
6 rooms
Street avg 6 rooms
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.4 km
St Michaels School — bus stop.
Closest school
0.4 km
St Michael's CofE Primary School, Sunninghill. 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
47.4dB

Night-time· 23:00 – 07:00
38.6dB







