Property data
Sale history
Date Paid price Annual growth After inflation
Aug 2023 £1,250,000 6.1% 2.3%
Nov 2017 £885,500 na na
Internal area
177 square metres (1,905 square feet) according to latest EPC inspection
Price per internal area

This property sold for £7,062 per square metre (£656 per square foot) in Aug 2023. Indexed forward to today's value, this is roughly £6,911 per square metre (£642 per square foot) .

Date Paid price Paid £/sqm Today's value Today's value £/sqm
Aug 2023 £1,250,000 £7,062 £1,223,192 £6,911
Nov 2017 £885,500 £5,003 £1,009,327 £5,702

Calculated using the latest EPC internal area of 177 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 £1,223,192. 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 £4,820 and £6,220 per square metre (£447 and £577 per square foot). Based on an internal area of 177 m², this implies a valuation between £853,000 and £1,101,000. 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
G
Plot size
2,187 square metres (23,541 square feet) - map showing freehold boundary lines
Planning applications
Planning ref:
March 2025 3/25/0135/ASDPN
Type:
Unknown type
Status:
Application approved with conditions
Address:
23 Firs Walk Tewin Wood Tewin Hertfordshire
Description:
Additional storey on top of the principle part of the existing dwellinghouse to raise the height from 6.7 metres to 9.5 metres.

Planning ref:
March 2025 3/25/0137/CLPO
Type:
Outline application - proposal prior to a full application, including assessments and scoping opinions.
Status:
Application approved
Address:
23 Firs Walk Tewin Wood Tewin Hertfordshire
Description:
Single storey side extension, single storey rear extension, and conversion of garage to workshop.

Planning ref:
March 2025 3/25/0136/PNHH
Type:
Outline application - proposal prior to a full application, including assessments and scoping opinions.
Status:
Application approved
Address:
23 Firs Walk Tewin Wood Tewin Hertfordshire
Description:
Single storey rear extension, and single storey side extension to be half the width of the original house: Depth 8.00 metres, Maximum height 4.00 metres, Eaves height 2.80 metres.

Planning ref:
April 2024 3/24/0280/HH
Type:
Full and householder planning application
Status:
Application refused
Address:
23 Firs Walk Tewin Wood Tewin Hertfordshire
Description:
Demolition of side garage and rear extension. Erection of two storey side and single storey rear extensions. Construction of front porch and car port with bin store facilities. Raising of roof height. Alterations to fenestration. Extension of driveway.
EPC Inspections
Summary:
23 August 2017 - energy performance certificate grade F
Certificate:
View energy certificate on GOV.UK
Reason for EPC:
marketed sale
Tenure:
Owner-occupied
Property type:
Detached House , has 8 habitable rooms. Estimated year built 1950 to 1966
Area:
177 sqm (1,905 square foot) total internal area
Comments:
Walls: Cavity wall, as built, no insulation (assumed). Roof: Pitched, no insulation (assumed). Heating: Boiler and radiators, mains gas.