30d, Boundary Road, St Albans, AL1 4DW
About 30d
30d is a detached house in St Albans (AL1 4DW). It has a recorded floor area of 29 m² (around 312 sq ft), construction records dating it to 1983-1990 and council tax band B. At 29 m² this is the smallest unit on EPC record across the building (29–95 m²). The building's EPC ratings span E to C, with this unit at the bottom. The latest certificate (September 2024) shows an E (score 53), well below the UK norm with real room to improve. Earlier certificates rated it D (January 2014); the latest reading is one band lower. Between certificates, window efficiency went from Very Poor to Poor and lighting went from Average to Very Good; while main heating dropped from Average to Very Poor. The recommended improvements would lift it to C (score 70), a 2-band jump. Main heating runs on electricity.
It hasn't traded since November 2004, a hold of 22 years that's notably long for the area. At 29 m² it sits well below the postcode median (57 m² across 21 EPCs), making it one of the more compact homes locally. On energy efficiency it sits in the bottom 10% of properties in this postcode — significant headroom for improvement. Across 1999–2004, sale prices on this property compounded at 14.6% per year. Today's modelled estimate of £210,000 sits 78% above the 2004 sale of £118,000. On a £-per-square-foot basis, the last sale (£378/sq ft) was about 16.5% below the postcode norm.
Everything you need to know about 30d
The true value, the hidden risks and the full sale history, in one report.
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Energy performance
30d sits at the bottom of the postcode for energy efficiency — meaningful headroom to improve.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating system changed
Heating controls upgraded for better temperature management
Single glazing replaced with double or better glazing
More low energy lighting installed
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £885 · Includes VAT
Planning history
30d has no planning applications on record.
But the area is active
1 notable application nearby — larger schemes and conversions that could reshape the street. The report maps them all.
Sales history & valuation
30d's estimated value is more than triple its earliest registered sale price (1999).
£210,000
Modelled from EPC, postcode comparables and a sale-price growth of 14.6% per year over 5 years.
£118,000
Growth on file: 14.6% per year over 5 years.
Sales timeline
9 November 2004Most recent
£118,000
+96.7%over 4 years19 November 1999
£60,000
Median price across the last 5 sales in AL1 4DW: £500,000 (2025–2023).
Nearby sales in AL1 4DW
Versus other Boundary Road homes
30d outperforms the street on years held by a wide margin.
Price per m²
£4,069
Street avg £6,192
Floor Area
29 m²
Street avg 39 m²
Habitable Rooms
2 rooms
Street avg 2 rooms
CO₂ Emissions
2.8 t/year
Street avg 2.2 t/year
Everything you need to know about 30d
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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Similar properties nearby
The neighbourhood at a glance
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Boundary Road — bus stop.
Closest school
0.2 km
Bernards Heath Infant and Nursery School. 35 schools nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.