18a, Ash Grove, Hemel Hempstead, HP3 9TL
About 18a
18a is a three-bedroom detached house in Hemel Hempstead (HP3 9TL). It has a recorded floor area of 104 m² (around 1124 sq ft), construction records dating it to 1991-1995 and council tax band E. The latest certificate (January 2012) shows a D (score 62), on the cusp of jumping into the C band. The rating has held steady at D across 2 certificates since September 2011. Between certificates, hot-water efficiency went from Average to Good and lighting went from Average to Good. The latest certificate is from January 2012, so improvements made since then won't be reflected. Records show the property has been extended at some point in its history.
Across 2005–2012, sale prices on this property compounded at 2.2% per year. Today's modelled estimate of £495,000 sits 54.7% above the 2012 sale of £320,000. One planning record on file: an extension approved in 2019. Past consents include an extension and a conservatory, meaningful when judging how the property has evolved. Last changed hands 14 years ago, in April 2012.
What this property has
Inside
- Bedrooms3
- EnsuiteYes
Outside
- Private gardenRear
Building
- Heating systemGas
- Previously extendedYes
Energy performance
18a's EPC is over a decade old — improvements since won't be reflected.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 18 Jan 2022
EPC Rating
Property Improvements
Changes detected from historical EPC data
Hot water system upgraded
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Planning history
18a has an approved side extension on the planning record.
1 application on record at 18a, Ash Grove, Hemel Hempstead, HP3 9TL
- May 2019ConservatoryFullOutcome in report
Extension: Side of property
Construction of conservatory to the side
Extension- Documents
- 7 docs on file
- Reference
- 4/00834/19/FHA
Unlock 18a, Ash Grove, Hemel Hempstead, HP3 9TL'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- Every decision — granted, refused or withdrawn (1 on record)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 2 notable nearby
- The 7 documents, officer reports & conditions
- What the pattern means for extending or converting here
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Sales history & valuation
18a valuation sits well clear of the typical sold price in this postcode.
£495,000
Modelled from EPC, postcode comparables and a sale-price growth of 2.2% per year over 7 years.
£320,000
Growth on file: 2.2% per year over 7 years.
Sales timeline
19 April 2012Most recent
£320,000
+16.8%over 6 years21 April 2005
£274,000
Median price across the last 5 sales in HP3 9TL: £395,950 (2022–2013).
Nearby sales in HP3 9TL
Versus other Ash Grove homes
18a outperforms the street on years held by a wide margin.
Price per m²
£3,064
Street avg £3,896
Floor Area
104 m²
Street avg 101 m²
Habitable Rooms
5 rooms
Street avg 6 rooms
CO₂ Emissions
4.4 t/year
Street avg 4.4 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
Oliver Rise — bus stop.
Closest school
0.4 km
Belswains Primary School. 23 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
50.3dB

Night-time· 23:00 – 07:00
39.7dB







