5 Siddons House, Cottage Close, Harrow, HA2 0HG
About 5 Siddons House
5 Siddons House is a one-bedroom detached house in Harrow (HA2 0HG). It has a recorded floor area of 64 m² (around 689 sq ft), construction records dating it to 1900-1929 and council tax band E. At 64 m² this is the 2nd smallest of 5 units on EPC record in the building, where floor areas span 60–107 m². The building's EPC ratings span D to C, with this unit at the bottom. On EPC score it ranks last in the building (59 versus a best of 72). The latest certificate (January 2022) shows a D (score 59), a step below the typical UK home. The rating has held steady at D across 2 certificates since July 2009. Between certificates, lighting went from Very Poor to Good; while window efficiency dropped from Good to Average and hot-water efficiency dropped from Very Good to Good.
On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 2005–2022, sale prices on this property compounded at 0.6% per year. Today's modelled estimate of £309,000 is 12.4% above the 2022 sale price. Last sale on file: £275,000 in September 2022. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 5 Siddons House
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
What this property has
Inside
- Bedrooms1
- Bathrooms1
- Dining roomYes
- EnsuiteYes
Outside
- ParkingAllocated
Building
- RefurbishedYes
Energy performance
5 Siddons House sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water efficiency decreased
More low energy lighting installed
Planning history
5 Siddons House has no planning applications on record.
Notable planning nearby
5applications of note in the surrounding area
We flagged 2 things worth checking at 5 Siddons House
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
5 Siddons House's sale-price growth has lagged the wider UK trajectory across its history on file.
£309,000
Modelled from EPC, postcode comparables and a sale-price growth of 0.6% per year over 17 years.
£275,000
Growth on file: 0.6% per year over 17 years.
Sales timeline
4 September 2022Most recent
£275,000
2 August 2007
£274,995
+10.0%over 1 year18 August 2005
£250,000
Median price across the last 5 sales in HA2 0HG: £305,000 (2025–2022).
Nearby sales in HA2 0HG
2 Siddons House, Cottage Close, Harrow, HA2 0HG
Sold Feb 2025
£435,0007 Blake House, Cottage Close, Harrow, HA2 0HG
Sold Feb 2023
£360,0003 Blake House, Cottage Close, Harrow, HA2 0HG
Sold Jan 2023
£278,0004 Siddons House, Cottage Close, Harrow, HA2 0HG
Sold Jul 2022
£305,00014 Langton House, Cottage Close, Harrow, HA2 0HG
Sold Mar 2022
£415,000
Everything we know about 5 Siddons House, 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 Cottage Close homes
EPC Rating for 5 Siddons House lags the street by a wide margin.
Price per m²
£4,297
Street avg £4,680
Floor Area
64 m²
Street avg 72 m²
Habitable Rooms
2 rooms
Street avg 3 rooms
CO₂ Emissions
3.5 t/year
Street avg 1.9 t/year
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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
0.1 km
Roxeth Hill — bus stop.
Closest school
0.1 km
St Dominic's Sixth Form College. 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
48.8dB

Night-time· 23:00 – 07:00
40.7dB