21 Northumberland Road, Harrow, HA2 7RA
About 21 Northumberland Road
21 Northumberland Road is a five-bedroom semi-detached house in Harrow (HA2 7RA). It has a recorded floor area of 149 m² (around 1604 sq ft), construction records dating it to 1930-1949 and council tax band E. The latest certificate (September 2025) shows a D (score 66), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since July 2015. Between certificates, roof efficiency went from Very Poor to Average; while window efficiency dropped from Good to Average. The recommended improvements would push it to C (score 77). Records show the property has been extended at some point in its history.
At 149 m² the property is well over the postcode median (110 m² across 28 EPCs), placing it in the larger end of the local stock. 5 bedrooms is on the larger side for this postcode, where 4 is the typical count. Most recent transfer was October 2025 at £675,000 — fresh data. Across 2002–2025, sale prices on this property compounded at 5.1% per year. Today's modelled estimate of £759,000 is 12.4% above the 2025 sale price. On a £-per-square-foot basis, the last sale (£421/sq ft) was about 52.8% above the typical sold price in the postcode. One historical planning record sits against the property in 2016.
Know exactly what you're buying at 21 Northumberland Road
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
- Bedrooms5
- Bathrooms2
- Dining roomYes
- CloakroomYes
- EnsuiteYes
- StudyYes
Outside
- ParkingOff street
Building
- Previously extendedYes
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Loft insulation installed or upgraded to 250mm+
More low energy lighting installed
Planning history
- Aug 2016ExtensionFullIn report
Extension: Single storey · Rear of property
Single storey rear extension: extending 4 metres beyond the original rear wall 3 metres maximum height 3 metres high to the eaves
- Documents
- 11 docs on file
- Reference
- P/3159/16
We flagged 1 thing worth checking at 21 Northumberland Road
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
30-day money-back guarantee
Sales history & valuation
Sale price has grown by over 3x since 2002.
£759,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.1% per year over 24 years.
£675,000
Growth on file: 5.1% per year over 24 years.
Sales timeline
14 October 2025Most recent
£675,000
+226.1%over 23 years15 January 2002
£207,000
Median price across the last 5 sales in HA2 7RA: £645,000 (2024–2022).
Nearby sales in HA2 7RA
Everything we know about 21 Northumberland Road, 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
Versus other Northumberland Road homes
21 Northumberland Road is notably below the street on years held.
Price per m²
£4,530
Street avg £5,021
Floor Area
149 m²
Street avg 113 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
4.9 t/year
Street avg 4.9 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
North Harrow Underground Station — subway entrance.
Closest school
0.5 km
St John Fisher Catholic Primary School. 36 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
41.2dB