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Pending6/2026/1316/HOUSESubmitted last monthTwo-storey extension

178 Knella Road Welwyn Garden City AL7 3NN

Erection of part single and part two storey rear extension with alterations to openings on rear elevation

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Map of the site

Progress

Submitted
27 Jul 2026
— completed
Validated
28 Jul 2026
— completed
Consultation
3 Sept 2026
— completed
Target date
—
— not yet reached
Decided
—
— not yet reached

Application details

Reference
6/2026/1316/HOUSE
Local authority
Welwyn Hatfield
Postcode
AL7 3NN
Ward
Peartree
Application type
Full
Property type
House

Key dates

Submitted
27 Jul 2026
Validated
28 Jul 2026

Estimated project value

£63k–£150k

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: FMB / Checkatrade 2026, £2,000-£2,800/m² over a larger floor area.

Recently sold nearby

Nothing on this postcode has changed hands in the last two years. The sales below are for pricing rather than a lead.

Homes here go for about £331,250 — the median of the last 8 market sales in AL7 3NN, £181,000 to £460,000.

Contains HM Land Registry data © Crown copyright and database right 2023. 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.

Nearby applications