31a, Allens Avenue, Norwich, NR7 8EP
About 31a
31a is a mid-terrace house in Norwich (NR7 8EP). It has a recorded floor area of 96 m² (around 1033 sq ft), construction records dating it to 1930-1949 and council tax band B. The latest certificate (November 2016) shows a D (score 56), a step below the typical UK home. When first surveyed in February 2010 the rating was E, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good, hot-water efficiency went from Average to Good and main heating went from Average to Good; while lighting dropped from Average to Poor. The recommended improvements would lift it to B (score 82), a 2-band jump.
Held since December 2005 — that's 20 years off the open market, well above the local norm. Across 2005–2005, sale prices on this property compounded at 31.4% per year. Today's modelled estimate of £257,000 sits 86.2% above the 2005 sale of £138,000. On a £-per-square-foot basis, the last sale (£134/sq ft) was about 24.7% below the postcode norm. 2 planning records sit against the property, 2 approved, 0 refused. Past consents include an extension, meaningful when judging how the property has evolved.
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 efficiency improved
Loft insulation installed or upgraded to 250mm+
Low energy lighting percentage decreased
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Planning history
31a has 2 separate extension applications on the council record.
2 applications on record at 31a, Allens Avenue, Norwich, NR7 8EP
- Nov 2021ExtensionFullOutcome in report
Extension: Single storey · Rear of property
Single storey pitched roof rear extension
- Documents
- 7 docs on file
- Reference
- 20211498
- More recent applications — locked
- ExtensionMay 2023Decision
Unlock 31a, Allens Avenue, Norwich, NR7 8EP's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (2 on record)
- All 2 applications on this property in full
- The 14 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
31a changed hands twice within eighteen months — unusual for the area.
£257,000
Modelled from EPC, postcode comparables and a sale-price growth of 31.4% per year over 1 year.
£138,000
Growth on file: 31.4% per year over 1 year.
Sales timeline
15 December 2005Most recent
£138,000
+31.4%over 8 months28 April 2005
£105,000
Median price across the last 5 sales in NR7 8EP: £308,500 (2025–2023).
Versus other Allens Avenue homes
31a outperforms the street on years held by a wide margin.
Price per m²
£1,438
Street avg £2,502
Floor Area
96 m²
Street avg 97 m²
Habitable Rooms
5 rooms
Street avg 5 rooms
CO₂ Emissions
5.4 t/year
Street avg 4.9 t/year
Similar properties nearby
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
2.9 km
Norwich International Airport — airport.
Closest school
0.1 km
Sprowston Junior School. 26 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
50.8dB

Night-time· 23:00 – 07:00
41.3dB







