9, Calder Avenue, AL9 7AH
9 Calder Avenue is a 195 m² / 2,099 sq ft detached home in Welham Green. It sold for £1,125,000 in November 2025. Indexed forward to today's value, that sale is roughly £1,087k. Recent local prices imply a broad valuation context of £994k to £1,306k based on its internal area. The Land Registry and EPC data was last updated 2 July 2026.
- Sale history
-
Date Paid price Annual growth After inflation Nov 2025 £1,125,000 0.6% -2.9% Oct 2017 £1,070,000 na na - Floor plan
-
Archived estate agent floor plan for 9, Calder Avenue.
- Internal area
- 195 square metres (2,099 square feet) according to latest EPC inspection
- Price per internal area
-
This property sold for £5,769 per square metre (£536 per square foot) in Nov 2025. Indexed forward to today's value, this is roughly £5,573 per square metre (£518 per square foot) .
Date Paid price Paid £/sqm Today's value Today's value £/sqm Nov 2025 £1,125,000 £5,769 £1,086,654 £5,573 Oct 2017 £1,070,000 £5,487 £1,193,447 £6,120 Calculated using the latest EPC internal area of 195 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 £1,086,654. This is one data point to inform the valuation. Another method is the valuation implied by what comparable homes are selling for. Homes in Welham Green are now selling for between £5,100 and £6,700 per square metre (£473 and £622 per square foot). Based on an internal area of 195 m², this implies a valuation between £994,000 and £1,306,000. 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
- 4
- Type
- Detached
- Council tax band
- G
- Plot size
- 750 square metres (8,073 square feet) - map showing freehold boundary lines
- Planning ref:
- July 2021 6/2021/1064/HOUSE
- Type:
- Full and householder planning application
- Status:
- Application approved
- Address:
- 9 Calder Avenue Brookmans Park Hatfield
- Description:
- Erection of part single, part two storey front extension; two storey side extension; part single, part two storey rear extension; garage conversion; enlargement of roof; insertion of side and rear rooflights; and front facade alterations.
- Summary:
- 28 May 2025 - energy performance certificate grade C
- Certificate:
- View energy certificate on GOV.UK
- Reason for EPC:
- Marketed sale
- Tenure:
- Owner-occupied
- Property type:
- Detached House , has 7 habitable rooms. Estimated year built 1930 to 1949
- Area:
- 195 sqm (2,099 square foot) total internal area
- Comments:
- Walls: Cavity wall, filled cavity. Roof: Pitched, 200 mm loft insulation. Heating: Boiler and radiators, mains gas.
- Summary:
- 20 March 2015 - 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 6 habitable rooms. Estimated year built 1930 to 1949
- Area:
- 205 sqm (2,207 square foot) total internal area
- Comments:
- Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, 100 mm loft insulation. Heating: Boiler and radiators, mains gas.
9 Calder Avenue 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 £1,086,654.
- Based on an internal area of 195 m² and recent prices in Welham Green, this implies a lower and upper quartile range from £994,000 to £1,306,000, using HouseMetric's implied valuation methodology.
For more detail on HouseMetric data sources, update frequency and valuation methods, see the HouseMetric FAQs.