9, Coldharbour Lane, AL5 4NQ

9 Coldharbour Lane is a 87 m² / 936 sq ft semi-detached home in Harpenden. It sold for £399,950 in December 2010. Indexed forward to today's value, that sale is roughly £656k. Recent local prices imply a broad valuation context of £502k to £717k based on its internal area. The Land Registry and EPC data was last updated 2 July 2026.

Property data
Sale history
Date Paid price Annual growth After inflation
Dec 2010 £399,950 7.5% 4.8%
May 2004 £249,950 na na
Internal area
87 square metres (936 square feet) according to latest EPC inspection
Price per internal area

This property sold for £4,597 per square metre (£427 per square foot) in Dec 2010. Indexed forward to today's value, this is roughly £7,545 per square metre (£701 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Dec 2010 £399,950 £4,597 £656,379 £7,545
May 2004 £249,950 £2,873 £437,750 £5,032

Calculated using the latest EPC internal area of 87 m². Earlier sale dates may not have had the same measured area available.

Valuation
The most recent sale price indexed forward to today's value is £656,379. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Harpenden are now selling for between £5,770 and £8,240 per square metre (£536 and £765 per square foot). Based on an internal area of 87 m², this implies a valuation between £502,000 and £717,000. Treat this as context only. For a valuation using hand-picked comparable sales, use the Advanced search tool — create a shortlist of similar condition homes, then export a valuation report.
Bedrooms
3
Type
Semi-detached
Council tax band
E
Plot size
290 square metres (3,122 square feet) - map showing freehold boundary lines
EPC Inspections
Summary:
07 September 2010 - energy performance certificate grade D
Reason for EPC:
None
Tenure:
Owner-occupied
Property type:
None , has 5 habitable rooms. Estimated year built 1950 to 1966
Area:
87 sqm (936 square foot) total internal area
Comments:
Frequently asked questions

9 Coldharbour Lane is worth whatever price a willing buyer and seller agree upon. However, the following can provide useful context.

  • HouseMetric estimates the most recent sale price indexed forward to today's value is £656,379.
  • Based on an internal area of 87 m² and recent prices in Harpenden, this implies a lower and upper quartile range from £502,000 to £717,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 9 Coldharbour Lane last sold for £399,950 in December 2010.

HouseMetric shows 9 Coldharbour Lane as 87 m² (936 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 3 bedrooms. Bedroom numbers can come from a previous estate agency listing, an EPC record, or an estimate based on the size of the property.

The latest EPC rating shown by HouseMetric is D, from an inspection dated 07 September 2010. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 9 Coldharbour Lane was in council tax band E. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

9 Coldharbour Lane is in postcode AL5 4NQ, in Harpenden. You can also view HouseMetric's sold-price page for Coldharbour Lane, AL5 4NQ or analysis of the Harpenden property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 2 July 2026. Figures such as indexed values and local valuation ranges are calculated estimates for context, while official records can change as public datasets are updated.

For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.