12a, King Harry Lane, St Albans, AL3 4AR
About 12a
12a is a six-bedroom detached house in St Albans (AL3 4AR). It has a recorded floor area of 338 m² (around 3638 sq ft), construction records dating it to 2003-2006 and council tax band H. There is a swimming pool on the plot, uncommon for the area. Other recorded features include outbuildings. The latest certificate (June 2015) shows a C (score 73). The latest certificate is from June 2015, so improvements made since then won't be reflected.
At 338 m² the property is well over the postcode median (178 m² across 7 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 86% of similar EPCs). 6 bedrooms is on the larger side for this postcode, where 4 is the typical count. Today's modelled estimate of £2,318,000 is 29.1% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£493/sq ft) was about 44.8% above the typical sold price in the postcode. 4 planning records sit against the property, 1 approved, 0 refused. Sold June 2021 for £1,795,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
What this property has
Inside
- Bedrooms6
- Bathrooms5
- Dining roomYes
- EnsuiteYes
- StudyYes
Outside
- ParkingOff street
- OutbuildingsYes
- Swimming poolYes
Energy performance
12a's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 01 Jun 2025
EPC Rating
Get a survey for this property
Level 3 Building Survey
Because the property is a large detached home over 300m², has been extended more than once, and has permanent outbuildings, we believe a Level 3 building survey should be considered.
From £1,945 · Includes VAT
Planning history
4 applications on record at 12a, King Harry Lane, St Albans, AL3 4AR
- Apr 2015RenovationOutlineOutcome in report
Installation of 3 roof lights
- Documents
- 5 docs on file
- Reference
- 5/2015/0426
- More recent applications — locked
- Tree WorksJan 2024Decision
- OutbuildingJan 2024Decision
+ 1 more application in the report
Unlock 12a, King Harry Lane, St Albans, AL3 4AR's full planning history
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- Every decision — granted, refused or withdrawn (4 on record)
- All 4 applications on this property in full, plus 5 notable nearby
- The 36 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
Latest sale on 12a was the highest on Land Registry record across the postcode.
£2,318,000
Modelled from EPC, postcode comparables.
£1,795,000
Recorded with HM Land Registry.
Sales timeline
15 June 2021Most recent
£1,795,000
Median price across the last 5 sales in AL3 4AR: £850,000 (2014–2010).
Nearby sales in AL3 4AR
12 King Harry Lane, St Albans, AL3 4AR
Sold Nov 2014
£1,200,00022 King Harry Lane, St Albans, AL3 4AR
Sold Feb 2011
£790,0003 Kingsgate, King Harry Lane, St Albans, AL3 4AR
Sold Jan 2011
£850,0006 King Harry Lane, St Albans, AL3 4AR
Sold Dec 2010
£650,00018 King Harry Lane, St Albans, AL3 4AR
Sold Apr 2010
£1,300,000
Versus other King Harry Lane homes
Years Held for 12a lags the street by a wide margin.
Price per m²
£5,311
Street avg £5,519
Floor Area
338 m²
Street avg 184 m²
Habitable Rooms
13 rooms
Street avg 9 rooms
CO₂ Emissions
9.4 t/year
Street avg 9.0 t/year
Similar properties nearby
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
St Columba's College — bus stop.
Closest school
0.5 km
Prae Wood Primary School. 25 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.







