Dower House 17A Knight Street Sawbridgeworth Hertfordshire CM21 9AT
Demolition of existing roof. Raising roof and chimney height through mansard loft conversion and extension, Insertion of three dormers to front elevation and two dormers to rear elevation. Insertion of 1 rear dormer and 1 side dormer to rear mansard roof extension. Insertion of window to first floor rear elevation and 1 window to second side elevation. Rear single storey extension with lantern roof light. Alterations to fenestration.
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Progress
Application details
- Reference
- 3/23/0451/HH
- Local authority
- East Hertfordshire
- Postcode
- CM21 9AT
- Ward
- Sawbridgeworth
- Application type
- Full
- Property type
- House
Key dates
- Submitted
- 8 Mar 2023
- Validated
- 9 Mar 2023
- Comments close
- 17 Apr 2023
- Target decision
- 4 May 2023
- Decided
- 4 May 2023
26 documents · 1 comments · 6 constraints
Estimated project value
£32k–£87k
Typical UK cost for this job type, at South East rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts. 5 recent sales are listed below.
- 2B KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATSemi-detached · £375,0006 months ago26 Feb 2026
- GEORGE FOURTH KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATOther · Not a standard market sale · £860,0007 months ago2 Feb 2026
- 17 KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATDetached · £880,00010 months ago31 Oct 2025
- 11 KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATTerraced · £310,00017 months ago28 Mar 2025
- 25A KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATSemi-detached · £505,00019 months ago6 Feb 2025
- 16 KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATTerraced · £985,0003 years ago13 Dec 2022
- EDEN HOUSE, 21A KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATDetached · £1,000,0004 years ago16 Feb 2022
- 13 KNIGHT STREET, SAWBRIDGEWORTH, CM21 9ATTerraced · £375,0004 years ago17 Dec 2021
Homes here go for about £505,000 — the median of the last 7 market sales in CM21 9AT, £310,000 to £1,000,000.
Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
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