21 Downing Street, Chippenham, SN14 0AA
About 21 Downing Street
21 Downing Street is a three-bedroom mid-terrace house in Chippenham (SN14 0AA). It has a recorded floor area of 93 m² (around 1001 sq ft), construction records dating it to before 1900 and council tax band B. The latest certificate (July 2012) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 84), a 2-band jump. The latest certificate is from July 2012, so improvements made since then won't be reflected.
Untraded for 26 years, with the last transfer in September 2000. Across 1997–2000, sale prices on this property compounded at 20.1% per year. Today's modelled estimate of £245,000 sits 197% above the 2000 sale of £82,500. On a £-per-square-foot basis, the last sale (£82/sq ft) was about 50.6% below the postcode norm. At 93 m² it's 19.2% larger than the typical home in the postcode (78 m² median across 44 EPCs).
What this property has
Inside
- Bedrooms3
- Dining roomYes
Outside
- Private gardenRear
Building
- Heating systemGas
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 23 Jul 2022
EPC Rating
Planning history
21 Downing Street has no planning applications on record.
The full report still covers planning activity across the surrounding area.
Sales history & valuation
21 Downing Street's modelled value sits at over four times its earliest registered sale price (1997).
£245,000
Modelled from EPC, postcode comparables and a sale-price growth of 20.1% per year over 3 years.
£82,500
Growth on file: 20.1% per year over 3 years.
Sales timeline
28 September 2000Most recent
£82,500
+87.5%over 3 years24 April 1997
£44,000
Median price across the last 5 sales in SN14 0AA: £261,500 (2025–2021).
Nearby sales in SN14 0AA
Versus other Downing Street homes
Price per m² for 21 Downing Street lags the street by a wide margin.
Price per m²
£887
Street avg £2,327
Floor Area
93 m²
Street avg 82 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
3.9 t/year
Street avg 4.1 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Woodlands Road — bus stop.
Closest school
0.3 km
Redland Primary School. 14 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
50.4dB

Night-time· 23:00 – 07:00
41.4dB







