21 Armstrong Avenue, Exeter, EX4 5DJ
About 21 Armstrong Avenue
21 Armstrong Avenue is a three-bedroom detached house in Exeter (EX4 5DJ). It has a recorded floor area of 101 m² (around 1087 sq ft), construction records dating it to 1976-1982 and council tax band D. The latest certificate (October 2024) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in September 2014 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Poor to Average, window efficiency went from Average to Good and hot-water efficiency went from Poor to Good. The recommended improvements would lift it to B (score 83), a 2-band jump. Our model identifies extension potential, subject to local planning policy.
A recent sale: £440,000 in January 2025. Across 2015–2025, sale prices on this property compounded at 6.1% per year. On a £-per-square-foot basis, the last sale (£405/sq ft) was about 64.2% above the typical sold price in the postcode.
Know exactly what you're buying at 21 Armstrong Avenue
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
- Bedrooms3
- Bathrooms1
- Open-plan layoutYes
- Dining roomYes
- Utility roomYes
- CloakroomYes
Outside
- Private gardenSouth-facing
Building
- Extension potentialPossible
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
Window efficiency improved
Wall insulation upgraded
More low energy lighting installed
Planning history
21 Armstrong Avenue has no planning applications on record.
Notable planning nearby
6applications of note in the surrounding area
We flagged 2 things worth checking at 21 Armstrong Avenue
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
Latest sale on 21 Armstrong Avenue was the highest on Land Registry record across the postcode.
£426,000
Modelled from EPC, postcode comparables and a sale-price growth of 6.1% per year over 10 years.
£440,000
Growth on file: 6.1% per year over 10 years.
Sales timeline
24 January 2025Most recent
£440,000
+46.7%over 6 years11 October 2018
£300,000
+22.0%over 3 years28 April 2015
£246,000
Median price across the last 5 sales in EX4 5DJ: £315,000 (2022–2018).
Nearby sales in EX4 5DJ
Everything we know about 21 Armstrong Avenue, 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 Armstrong Avenue homes
Years Held for 21 Armstrong Avenue lags the street by a wide margin.
Price per m²
£4,356
Street avg £3,335
Floor Area
101 m²
Street avg 91 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
4.1 t/year
Street avg 4.3 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
12/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Rosebarn Lane — bus stop.
Closest school
0.5 km
Stoke Hill Junior School. 19 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
46.5dB

Night-time· 23:00 – 07:00
36.4dB