18a, Sidney Road, Harrow, HA2 6QE
About 18a
18a is a semi-detached house in Harrow (HA2 6QE). It has a recorded floor area of 102 m² (around 1098 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (May 2025) shows an E (score 54), well below the UK norm with real room to improve. The rating has held steady at E across 2 certificates since June 2015. Between certificates, window efficiency went from Average to Good and lighting went from Average to Very Good. The recommended improvements would lift it to B (score 83), a 3-band jump.
It hasn't traded since December 2003, a hold of 23 years that's notably long for the area. Across 1998–2003, sale prices on this property compounded at 17.8% per year. Today's modelled estimate of £655,000 sits 114.8% above the 2003 sale of £305,000. At 102 m² it's 25.9% larger than the typical home in the postcode (81 m² median across 27 EPCs).
Know exactly what you're buying at 18a
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
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
18a has no planning applications on record.
Notable planning nearby
3applications of note in the surrounding area
We flagged 1 thing worth checking at 18a
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
Sale price has at least doubled since 1998.
£655,000
Modelled from EPC, postcode comparables and a sale-price growth of 17.8% per year over 5 years.
£305,000
Growth on file: 17.8% per year over 5 years.
Sales timeline
3 December 2003Most recent
£305,000
+146.0%over 5 years7 June 1998
£124,000
Median price across the last 5 sales in HA2 6QE: £535,000 (2024–2020).
Everything we know about 18a, 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 Sidney Road homes
Years Held for 18a runs comfortably ahead of the street norm.
Price per m²
£2,990
Street avg £4,381
Floor Area
102 m²
Street avg 92 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.6 t/year
Street avg 5.0 t/year
Similar properties nearby
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
Headstone Drive — bus stop.
Closest school
0.7 km
Marlborough Primary School. 29 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
50.3dB
Night-time· 23:00 – 07:00
39.5dB