Garden House, Sudbury Hill, Harrow, HA1 3NA
About Garden House
Garden House is a detached house in Harrow (HA1 3NA). It has a recorded floor area of 248 m² (around 2669 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (June 2023) shows a D (score 63), on the cusp of jumping into the C band. When first surveyed in April 2013 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Very Poor to Very Good; while roof efficiency dropped from Very Good to Average. The recommended improvements would push it to C (score 78).
At 248 m² the property is well over the postcode median (91 m² across 18 EPCs), placing it in the larger end of the local stock. 12 planning records sit against the property, 5 approved, 1 refused. Past consents include tree works, a garage conversion, an extension and a porch, meaningful when judging how the property has evolved.
Know exactly what you're buying at Garden 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
Energy performance
Garden House's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls changed
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Planning history
Garden House has been through 5 approved planning applications — a well-evolved property.
- May 2019Tree WorksTreesIn report
T1 Silver birch: tree split and fell in wind. I have already removed this tree. Base decay. T2 silver birch: reduce by 3m to remove weight and sail in wind and reduce back from building by 3m T3 pine: crown clean and reduce end loading. T4 pine in neighbours garden: reduce end loading on large lateral branch. T5 Acer, Ivy-clad: Crown clean remove ivy inspect canopy and reduce by 2m neighbours garden. T6,7,8 Horse chestnuts: reduce damaged branches and crown clean.
- Documents
- 5 docs on file
- Reference
- P/1172/19
- May 2015Garage ConversionOutlineIn report
Certificate of lawful development (proposed): conversion of garage into habitable room including replacement of garage doors with window; alterations to first floor windows on front elevation
- Documents
- 15 docs on file
- Reference
- P/1362/15
We flagged 1 thing worth checking at Garden 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.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Garden House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£1,194,000
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 HA1 3NA: £507,500 (2024–2021).
Nearby sales in HA1 3NA
Kings Gate, Sudbury Hill, Harrow, HA1 3NA
Sold Jul 2024
£1,100,000Highlawn Hall, Flat 7, Sudbury Hill, Harrow, HA1 3NA
Sold Dec 2023
£507,500Highlawn Hall, Flat 2, Sudbury Hill, Harrow, HA1 3NA
Sold Mar 2022
£449,950The Orchard, Sudbury Hill, Harrow, HA1 3NA
Sold Apr 2021
£2,244,0002 Highlawn House, Sudbury Hill, Harrow, HA1 3NA
Sold Dec 2020
£85,000
Everything we know about Garden 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
- Larger development activity nearby

Versus other Sudbury Hill homes
Garden House is notably below the street on floor area.
EPC Rating
63 (D)
Street avg 59 (D)
Floor Area
248 m²
Street avg 312 m²
CO₂ Emissions
9.2 t/year
Street avg 12.4 t/year
Habitable Rooms
7 rooms
Street avg 10 rooms
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
28/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Clementine Churchill Hospital — bus stop.
Closest school
0.3 km
St Dominic's Sixth Form College. 31 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
48.1dB

Night-time· 23:00 – 07:00
40.4dB