12a, Holywell Hill, St Albans, AL1 1BZ
About 12a
12a is a two-bedroom detached house in St Albans (AL1 1BZ). It has a recorded floor area of 65 m² (around 700 sq ft), construction records dating it to before 1900 and council tax band C. The latest certificate (January 2026) shows a D (score 65), on the cusp of jumping into the C band. When first surveyed in July 2010 the rating was E, the property has climbed 1 band since. Between certificates, wall efficiency went from Very Poor to Good and lighting went from Average to Good; while window efficiency dropped from Poor to Very Poor and hot-water efficiency dropped from Good to Average. The recommended improvements would push it to C (score 80). Main heating runs on electricity. At 65 m² this is the 15th smallest of 31 units on EPC record in the building, where floor areas span 25–161 m². The building's EPC ratings span F to C across 31 units on file.
Today's modelled estimate of £436,000 is 26.4% above the 2015 sale price. On a £-per-square-foot basis, the last sale (£493/sq ft) was about 26.5% above the typical sold price in the postcode. Last sold in May 2015, so it's been off the market for around 11 years.
What this property has
Inside
- Bedrooms2
- Bathrooms1
Energy performance
12a's carbon output is low for the local stock.
EPC Rating
Certificate validity
Valid until 15 January 2036
Property Improvements
Changes detected from historical EPC data
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
Window efficiency improved
Wall insulation improved
Upgraded to gas central heating
Heating controls upgraded for better temperature management
Hot water system upgraded
Wall insulation upgraded
Connected to mains gas supply
Hot water efficiency improved
Single glazing replaced with double or better glazing
Heating system changed
Changed to a more efficient fuel source
Heating controls changed
Hot water system changed
External or internal wall insulation added
Get a survey for this property
Level 3 Building Survey
Because the property was built before 1919, has no mains gas supply, and has solid (non-cavity) walls, we believe a Level 3 building survey should be considered.
From £1,020 · Includes VAT
Planning history
12a has no planning applications on record.
But the area is active
5 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
12a valuation sits well clear of the typical sold price in this postcode.
£436,000
Modelled from EPC, postcode comparables.
£345,000
Recorded with HM Land Registry.
Sales timeline
28 May 2015Most recent
£345,000
Median price across the last 5 sales in AL1 1BZ: £296,500 (2020–2014).
Nearby sales in AL1 1BZ
28a, Holywell Hill, St Albans, AL1 1BZ
Sold Mar 2020
£368,000Lipscombe House, Apartment 2, 2 Holywell Hill, St Albans, AL1 1BZ
Sold Nov 2018
£445,00010b, Holywell Hill, St Albans, AL1 1BZ
Sold Mar 2016
£180,00018 Holywell Hill, St Albans, AL1 1BZ
Sold Dec 2011
£365,0002 Holywell Mews, Holywell Hill, St Albans, AL1 1BZ
Sold Jul 2008
£460,000
Versus other Holywell Hill homes
12a outperforms the street on co₂ emissions by a wide margin.
Price per m²
£5,308
Street avg £6,194
Floor Area
65 m²
Street avg 57 m²
Habitable Rooms
3 rooms
Street avg 3 rooms
CO₂ Emissions
0.8 t/year
Street avg 3.0 t/year
Similar properties nearby
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1 Dorcas Court, Old London Road
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The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
283/mo
Falling year-on-year across the wider district.
Nearest stop
0.1 km
The Peahen PH — bus stop.
Closest school
0.3 km
The Abbey Church of England Voluntary Aided Primary School, St Albans. 30 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







