21 Southdown Crescent, Harrow, HA2 0QT
About 21 Southdown Crescent
21 Southdown Crescent is an end-of-terrace house in Harrow (HA2 0QT). It has a recorded floor area of 45 m² (around 484 sq ft), construction records dating it to 2020 and council tax band D. At 45 m² this is the 2nd smallest of 26 units on EPC record in the building, where floor areas span 38–113 m². The building's EPC ratings span F to C, with this unit at the top. The latest certificate (March 2021) shows a C (score 76), near the top of the C band.
Held since June 2004 — that's 22 years off the open market, well above the local norm. At 45 m² it sits well below the postcode median (81 m² across 25 EPCs), making it one of the more compact homes locally. Its energy rating outperforms most of the postcode (better than 72% of similar EPCs). 3 planning records sit against the property, 1 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved. Today's modelled estimate of £322,000 is 30.1% above the 2004 sale price. On a £-per-square-foot basis, the last sale (£511/sq ft) was about 70.1% above the typical sold price in the postcode.
Know exactly what you're buying at 21 Southdown Crescent
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
Energy performance
21 Southdown Crescent's carbon output is low for the local stock.
EPC Rating
Planning history
Council records include a part-single-part-two-storey side and rear extension at 21 Southdown Crescent.
- Jul 2014PorchFullIn report
Two storey side; single storey rear extensions; front porch; external alterations
Extension- Documents
- 11 docs on file
- Reference
- P/1927/14
- Apr 2014ExtensionFullIn report
Single storey rear extension; two storey side extension
- Documents
- 10 docs on file
- Reference
- P/0561/14
We flagged 2 things worth checking at 21 Southdown Crescent
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.
- Signs of HMO activity in the area
- Larger development activity nearby
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Sales history & valuation
21 Southdown Crescent valuation sits well clear of the typical sold price in this postcode.
£322,000
Modelled from EPC, postcode comparables.
£247,500
Recorded with HM Land Registry.
Sales timeline
27 June 2004Most recent
£247,500
Median price across the last 5 sales in HA2 0QT: £527,000 (2025–2019).
Nearby sales in HA2 0QT
Everything we know about 21 Southdown Crescent, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Signs of HMO activity in the area
- Larger development activity nearby

Versus other Southdown Crescent homes
On epc rating, 21 Southdown Crescent runs well behind the street norm.
EPC Rating
76 (C)
Street avg 77 (C)
Floor Area
45 m²
Street avg 59 m²
CO₂ Emissions
1.3 t/year
Street avg 1.5 t/year
Similar properties nearby
1 Emerald Court, Drinkwater Road
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1 Athena Close, Byron Hill Road
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1 Amber Court, Goldsmith Close
HA2 0EZ
1 Abbots Drive
HA2 0RE
1 Cowen Avenue
HA2 0LU
1 Crown Court, Crown Street
HA2 0HS
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Rising year-on-year across the wider district.
Nearest stop
0.2 km
Porlock Avenue — bus stop.
Closest school
0.2 km
Grange Primary School. 37 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
51.1dB

Night-time· 23:00 – 07:00
39.6dB