3, Swangleys Lane, SG3 6AA

3 Swangleys Lane is a 107 m² / 1,152 sq ft detached home in Knebworth. It sold for £575,000 in September 2025. Indexed forward to today's value, that sale is roughly £569k. Recent local prices imply a broad valuation context of £479k to £609k based on its internal area. The Land Registry and EPC data was last updated 2 July 2026.

Property data
Sale history
£575,000 on Sep 2025
Internal area
107 square metres (1,152 square feet) according to latest EPC inspection
Price per internal area

This property sold for £5,373 per square metre (£499 per square foot) in Sep 2025. Indexed forward to today's value, this is roughly £5,321 per square metre (£494 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Sep 2025 £575,000 £5,374 £569,391 £5,321

Calculated using the latest EPC internal area of 107 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 £569,391. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Knebworth are now selling for between £4,480 and £5,690 per square metre (£416 and £528 per square foot). Based on an internal area of 107 m², this implies a valuation between £479,000 and £609,000. 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
Detached
Council tax band
F
EPC Inspections
Summary:
06 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 Bungalow , has 6 habitable rooms. Estimated year built 1900 to 1929
Area:
107 sqm (1,152 square foot) total internal area
Comments:
Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, 150 mm loft insulation. Heating: Boiler and radiators, mains gas.
Summary:
19 June 2012 - energy performance certificate grade D
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
not sale or rental
Tenure:
Unknown
Property type:
Detached Bungalow , has 6 habitable rooms. Estimated year built 1900 to 1929
Area:
108 sqm (1,163 square foot) total internal area
Comments:
Walls: Solid brick, as built, no insulation (assumed). Roof: Pitched, 300+ mm loft insulation. Heating: Boiler and radiators, mains gas.
Frequently asked questions

3 Swangleys 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 £569,391.
  • Based on an internal area of 107 m² and recent prices in Knebworth, this implies a lower and upper quartile range from £479,000 to £609,000, using HouseMetric's implied valuation methodology.

According to HM Land Registry price paid data, 3 Swangleys Lane last sold for £575,000 in September 2025.

HouseMetric shows 3 Swangleys Lane as 107 m² (1,152 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 06 September 2024. EPC information comes from the public Energy Performance Certificate data for England and Wales.

When we last checked, 3 Swangleys Lane was in council tax band F. Council Tax bands can change, so check the latest Valuation Office Agency Council Tax list.

3 Swangleys Lane is in postcode SG3 6AA, in Knebworth. You can also view HouseMetric's sold-price page for Swangleys Lane, SG3 6AA or analysis of the Knebworth 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.