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About 21 Christchurch Avenue
A plain-English summary derived from public records, EPC certificates, sold prices and local data.
21 Christchurch Avenue is a three-bedroom mid-terrace house in Harrow (HA3 8ND). It has a recorded floor area of 19 m² (around 205 sq ft), construction records dating it to 2025 and council tax band F. At 19 m² this is the 3rd smallest of 13 units on EPC record in the building, where floor areas span 18–189 m². The building's EPC ratings span E to C, with this unit at the top. On EPC score it ranks first in the building (74 versus a worst of 53). The latest certificate (July 2025) shows a C (score 74). When first surveyed in August 2009 the rating was D, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Very Good, window efficiency went from Average to Very Good and lighting went from Very Poor to Very Good; while roof efficiency dropped from Very Good to Good and hot-water efficiency dropped from Very Good to Very Poor. Main heating runs on electricity: electricity, unspecified tariff.
It hasn't traded since December 2009, a hold of 16 years that's notably long for the area. That sale fell during the post-crash dip, which often skews comparisons against later neighbouring sales. Today's modelled estimate of £671,000 sits 86.4% above the 2009 sale of £360,000. On a £-per-square-foot basis, the last sale (£1,760/sq ft) was about 294.6% above the typical sold price in the postcode. At 19 m² it sits well below the postcode median (145 m² across 12 EPCs), making it one of the more compact homes locally.
What this property has
Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.
Inside
- Bedrooms3
- Dining roomYes
Outside
- Parkingoff_street
Building
Energy performance
Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.
21 Christchurch Avenue's carbon output is low for the local stock.
Current Certificate(1 of 2)
Jul 2025
EPC Rating
A
B
C
C74
D
E
F
G
Main Heating
Electric
Main Fuel
Electric
Hot Water
Very Poor
Windows
Very Good
CO2 Emissions
1.0 t/year
Occupancy
—
Sales history & valuation
Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.
The latest sale fell during the post-2008 dip, often a low-water mark in price comparisons.
Current estimate
See how we calculated this£671,000
Modelled from EPC, postcode comparables.
Last sold (2009)
£360,000
Recorded with HM Land Registry.
Sales timeline
Full property reportLaunch offer · 33% off
The complete analysis of 21 Christchurch Avenue, Harrow, HA3 8ND
Everything we know about this property, compiled into one in-depth, downloadable report.
Detailed AI analysis
Similar properties nearby
A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.
The neighbourhood at a glance
A condensed read of the local area. Each tile links through to the full breakdown on the Harrow district page.
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Road noise across the postcode
Modelled day and night-time noise levels around HA3 8ND from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime· 07:00 – 23:00
49.3dB
Everything within walking distance
Schools, transport stops and scenic spots near this property — 71 points of interest in total.
Common questions
The questions buyers, sellers and homeowners most often ask about 21 Christchurch Avenue, Harrow, HA3 8ND. Each answer is also embedded as structured data for search engines.