21 Byron Road, Harrow, HA1 1JR
About 21 Byron Road
21 Byron Road is a four-bedroom mid-terrace house in Harrow (HA1 1JR). It has a recorded floor area of 108 m² (around 1163 sq ft), construction records dating it to 1930-1949 and council tax band D. The latest certificate (June 2025) shows a D (score 58), a step below the typical UK home. The rating has held steady at D across 3 certificates since January 2009. Between certificates, hot-water efficiency went from Average to Good and main heating went from Average to Good; while roof efficiency dropped from Average to Very Poor. The recommended improvements would push it to C (score 80).
Held since October 2006 — that's 20 years off the open market, well above the local norm. At 108 m² the property is well over the postcode median (80 m² across 7 EPCs), placing it in the larger end of the local stock. Across 1998–2006, sale prices on this property compounded at 9.6% per year. Today's modelled estimate of £533,000 sits 107% above the 2006 sale of £257,500. On a £-per-square-foot basis, the last sale (£222/sq ft) was about 53.4% below the postcode norm.
Know exactly what you're buying at 21 Byron 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
- Bedrooms4
Energy performance
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water efficiency improved
Loft insulation upgraded to recommended levels
Low energy lighting percentage decreased
Heating controls upgraded for better temperature management
Windows upgraded, improving insulation
More low energy lighting installed
Planning history
21 Byron Road has no planning applications on record.
Notable planning nearby
9applications of note in the surrounding area
We flagged 1 thing worth checking at 21 Byron 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
21 Byron Road has more than doubled in price since the earliest registered sale in 1998.
£533,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.6% per year over 9 years.
£257,500
Growth on file: 9.6% per year over 9 years.
Sales timeline
20 October 2006Most recent
£257,500
+120.1%over 8 years26 March 1998
£117,000
Median price across the last 5 sales in HA1 1JR: £494,000 (2024–2020).
Everything we know about 21 Byron 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 Byron Road homes
EPC Rating for 21 Byron Road lags the street by a wide margin.
Price per m²
£2,384
Street avg £4,343
Floor Area
108 m²
Street avg 91 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.3 t/year
Street avg 3.7 t/year
Similar properties nearby
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
0.0 km
Greenhill Way — bus stop.
Closest school
0.3 km
Norbury School. 40 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
56.3dB
Night-time· 23:00 – 07:00
46.0dB