21a, St Williams Way, Norwich, NR7 0AH
About 21a
21a is a detached house in Norwich (NR7 0AH). It has a recorded floor area of 162 m² (around 1744 sq ft), construction records dating it to 1967-1975 and council tax band C. The latest certificate (April 2023) returns a B (score 81), comfortably above the UK average. When first surveyed in May 2013 the rating was D, the property has climbed 2 bands since. Between certificates, roof efficiency went from Average to Good and window efficiency went from Average to Good; while wall efficiency dropped from Good to Average.
At 162 m² the property is well over the postcode median (93 m² across 21 EPCs), placing it in the larger end of the local stock. On energy efficiency it sits in the top 10% of properties in this postcode. One historical planning record sits against the property in 2025.
Everything you need to know about 21a
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
21a ranks among the most efficient homes in the postcode for energy use.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Window efficiency improved
Loft insulation upgraded to recommended levels
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
1 application on record at 21a, St Williams Way, Norwich, NR7 0AH
- Apr 2025OutbuildingFullOutcome in report
Construction of swimpond and timber summerhouse
- Documents
- 9 docs on file
- Reference
- 2025/0518
Unlock 21a, St Williams Way, Norwich, NR7 0AH's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn (1 on record)
- All 1 application on this property in full, plus 3 notable nearby
- The 9 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
21a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£493,000
Modelled from EPC, postcode comparables.
No sales recorded with HM Land Registry
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
Median price across the last 5 sales in NR7 0AH: £305,000 (2025–2022).
Nearby sales in NR7 0AH
Versus other St Williams Way homes
On epc rating, 21a stands well clear of the street.
EPC Rating
81 (B)
Street avg 59 (D)
Floor Area
162 m²
Street avg 103 m²
CO₂ Emissions
4.0 t/year
Street avg 5.2 t/year
Habitable Rooms
7 rooms
Street avg 5 rooms
Everything you need to know about 21a
The true value, the hidden risks and the full sale history, in one report.
Pick your report · every report is £14.99
One time fee only - money back guarantee
The data behind every report
Similar properties nearby
The neighbourhood at a glance
Crime
4/mo
Steady year-on-year across the wider district.
Nearest stop
2.0 km
Norwich Rail Station — railway station.
Closest school
0.4 km
St William's Primary School. 28 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
51.2dB
Night-time· 23:00 – 07:00
40.5dB