31, Mill Lane, AL6 9EU

31 Mill Lane is a 269 m² / 2,895 sq ft detached home in Welwyn. It sold for £760,000 in December 1997. Indexed forward to today's value, that sale is roughly £3,619k. Recent local prices imply a broad valuation context of £1,262k to £1,574k based on its internal area. The Land Registry and EPC data was last updated 1 June 2026.

Property data
Sale history
£760,000 on Dec 1997
Internal area
269 square metres (2,895 square feet) according to latest EPC inspection
Price per internal area

This property sold for £2,825 per square metre (£262 per square foot) in Dec 1997. Indexed forward to today's value, this is roughly £13,454 per square metre (£1,250 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Dec 1997 £760,000 £2,825 £3,619,247 £13,454

Calculated using the latest EPC internal area of 269 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 £3,619,247. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Welwyn are now selling for between £4,690 and £5,850 per square metre (£435 and £543 per square foot). Based on an internal area of 269 m², this implies a valuation between £1,262,000 and £1,574,000. 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
5
Type
Detached
Council tax band
H
Plot size
2,203 square metres (23,713 square feet) - map showing freehold boundary lines
Planning applications
Planning ref:
November 2024 6/2024/2010/TC
Type:
Tree and hedge works
Status:
Application approved
Address:
31 Mill Lane Welwyn
Description:
T1 Yew to cut back overhanging branches to the boundary.
Planning ref:
March 2024 6/2024/0301/TC
Type:
Tree and hedge works
Status:
Application approved
Address:
31 Mill Lane Welwyn
Description:
T1-Sycamore-Reduce crown all round by 2-3 metres to maintain size and shape and to allow more light
Planning ref:
March 2019 6/2018/3009/LB
Type:
Heritage application - conservation issues and listed buildings
Status:
Application approved
Address:
31 Mill Lane Welwyn
Description:
Replacement of Modern PVC, Aluminium Windows and Doors on Grade II listed building
EPC Inspections
Summary:
13 September 2024 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Detached House , has 10 habitable rooms. Estimated year built before 1900
Area:
269 sqm (2,895 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: Pitched, no insulation (assumed). Heating: Boiler and radiators, mains gas.
Frequently asked questions

31 Mill 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 £3,619,247.
  • Based on an internal area of 269 m² and recent prices in Welwyn, this implies a lower and upper quartile range from £1,262,000 to £1,574,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 31 Mill Lane last sold for £760,000 in December 1997.

HouseMetric shows 31 Mill Lane as 269 m² (2,895 sq ft), based on the latest internal area data available for this property. The bedroom count is shown as 5 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 13 September 2024. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 31 Mill Lane was in council tax band H. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

31 Mill Lane is in postcode AL6 9EU, in Welwyn. You can also view HouseMetric's sold-price page for Mill Lane, AL6 9EU or analysis of the Welwyn property market.

HouseMetric combines HM Land Registry price paid data, Energy Performance Certificate data and Ordnance Survey/open data. The data were last updated 1 June 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.