15 Gainsborough Avenue, St Albans, AL1 4NJ
About 15 Gainsborough Avenue
15 Gainsborough Avenue is a four-bedroom detached house in St Albans (AL1 4NJ). It has a recorded floor area of 246 m² (around 2648 sq ft), construction records dating it to 1950-1966 and council tax band G. The latest certificate (January 2024) shows a C (score 80), near the top of the C band. When first surveyed in April 2022 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Average to Very Good, window efficiency went from Poor to Good and lighting went from Very Poor to Very Good; while hot-water efficiency dropped from Average to Poor. The recommended improvements would push it to B (score 86). Main heating runs on electricity.
At 246 m² the property is well over the postcode median (147 m² across 11 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 82% of similar EPCs). On a £-per-square-foot basis, the last sale (£623/sq ft) was about 52.3% above the typical sold price in the postcode. 2 planning records sit against the property, 0 approved, 0 refused. Sold October 2022 for £1,650,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms4
- Bathrooms1
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenFront and rear
- GarageDetached
Everything you need to know about 15 Gainsborough Avenue
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Energy performance
Achieving this rating across a home of this size is uncommon — larger homes typically score lower.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heat pump installed, significantly improving energy efficiency
Changed to a more efficient fuel source
Heating controls upgraded for better temperature management
Hot water efficiency decreased
Windows upgraded, improving insulation
Floor insulation added or improved
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has been extended more than once and has no mains gas supply, we believe a Level 3 building survey should be considered.
From £1,795 · Includes VAT
Planning history
2 applications on record at 15 Gainsborough Avenue, St Albans, AL1 4NJ
- Nov 2022ExtensionFullOutcome in report
Extension: Side and rear of property
Two storey side and rear and one storey side and rear extensions with rooflight and alterations to openings
- Documents
- 10 docs on file
- Reference
- 5/2022/2713
- More recent applications — locked
- Demolition And RebuildSept 2024Decision
Unlock 15 Gainsborough Avenue, St Albans, AL1 4NJ'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, plus 1 notable nearby
- The 22 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Latest sale on 15 Gainsborough Avenue was the highest on Land Registry record across the postcode.
£1,778,000
Modelled from EPC, postcode comparables.
£1,650,000
Recorded with HM Land Registry.
Sales timeline
2 October 2022Most recent
£1,650,000
Median price across the last 5 sales in AL1 4NJ: £1,088,000 (2024–2013).
Nearby sales in AL1 4NJ
17 Gainsborough Avenue, St Albans, AL1 4NJ
Sold Apr 2024
£1,300,0005 Gainsborough Avenue, St Albans, AL1 4NJ
Sold Jul 2019
£1,015,00027 Gainsborough Avenue, St Albans, AL1 4NJ
Sold Feb 2016
£1,285,00019 Gainsborough Avenue, St Albans, AL1 4NJ
Sold Nov 2014
£1,088,00029 Gainsborough Avenue, St Albans, AL1 4NJ
Sold Sept 2013
£745,000
Versus other Gainsborough Avenue homes
15 Gainsborough Avenue outperforms the street on epc rating by a wide margin.
Price per m²
£6,707
Street avg £6,083
Floor Area
246 m²
Street avg 149 m²
Habitable Rooms
7 rooms
Street avg 7 rooms
CO₂ Emissions
3.7 t/year
Street avg 6.4 t/year
Everything you need to know about 15 Gainsborough Avenue
The true value, the hidden risks and the full sale history, in one report.
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One time fee only - money back guarantee

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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Blenheim Road — bus stop.
Closest school
0.5 km
Verulam School. 36 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.









