2016
Withdrawn
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
42B West Common Harpenden Hertfordshire AL5 2JW Data via plota.co.uk
5/2026/0813 - HSE
Approved
Proposal
Proposed roof alteration, loft conversion, dormer projections, garage conversion and alterations Data via plota.co.uk
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View original council record ↗Last checked
Application progress
✓
Received
22 Apr 2026
✓
Validated
23 Apr 2026
✓
Approved
1 Jul 2026
Approved on 1 Jul 2026 · Delegated · Last checked 18 Sept 2026
Site constraints 9
Harpenden conservation area
Demolition needs planning permission and permitted development is restricted.
The council must give weight to preserving or enhancing the area's character and appearance. Not every council has published its boundaries as open data.
Habitat network: Network Enhancement Zone 2
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
1 listed building within 150 m of the postcode pin; Radon affected area, class 2; Inside the Harpenden built-up area; Green belt about 33 m away: London; Priority habitat about 32 m away: Deciduous woodland; Open access land about 31 m away: Access Land - Combined Open Country, Registered Common Land and Section 16 Dedicated Land. MoD Byelaw, Section 28 Exclusions, Racecourses and Aerodromes and ECP Margin have been removed.; Natural England's Provisional ALC map (1:250,000, 1970s) had this area as grade 3, but it predates the buildings here and the current map does not class it as farmland.
Not affected
Outside flood zones 2 and 3 · No scheduled monument at the site
Checked on 6 October 2026. The pin for this application is the centre of its postcode rather than the building, so distances to nearby designations are measured from the postcode and can be out by the width of the postcode area. Historic England, the Environment Agency, Natural England, the British Geological Survey and UK Health Security Agency (radon, contains BGS materials © UKRI) and council datasets, Open Government Licence. A boundary can run through a site and the council holds the definitive record: confirm with the council before relying on this.
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Important details
How this decision compares
Decided in 69 days from validation, 12 days faster than St Albans's median of 81 for extensions. Approved, as 85% of extensions here are.
This one69d
Council81d
UK55d
28%decided within 8 weeks
85%approved
633decided in the last year
Plota live figures for extensions decided by St Albans in the last twelve months, from validation. St Albans decision record →
Consultation & key dates
- Alt. reference
- 321215PLN
- Comments by
- 13 Jun 2026
- Site or press notice
- 21 May 2026
- Statutory expiry
- 17 Jun 2026
- Env. assessment
- No
Historical activity at this location
29 previous applications on record - archival context, not part of the live application.
This property
Previous applications at this address
2025
Approved
Proposed roof alteration, loft conversion, dormer projections, garage conversion and alte…
2025
Approved
Proposed roof alteration, loft conversion, dormer projections, garage conversion and alte…
2022
Approved
T1 Ash Remove to ground level as this tree has Ash Dieback
2022
Approved
T1 Ash Remove to ground level as this tree has Ash Dieback
Within ~100m
Nearby activity
2025
Approved
Yew Trees 42 West Common Harpenden Hertfordshire Al5 2Jw
Erection of aluminium framed single storey pergola in rear garden
2025
Approved
Yew Trees 42 West Common Harpenden Hertfordshire Al5 2Jw
Erection of aluminium framed single storey pergola in rear garden
2025
Land Opposite 44 West Common Harpenden Hertfordshire Al5 2Jw
Tree id: T696 Species: Fraxinus excelsior (Ash) Height (m): 18 Spread (m): 10 DBH (cm): 4…
2025
Land Opposite 44 West Common Harpenden Hertfordshire Al5 2Jw
Tree id: T696 Species: Fraxinus excelsior (Ash) Height (m): 18 Spread (m): 10 DBH (cm): 4…
2024
Approved
42A West Common Harpenden Hertfordshire Al5 2Jw
Demolition of existing four bedroom dwelling and garage and construction of replacement f…
2025
Approved
Little Redcote West Common Harpenden Hertfordshire Al5 2Jw
1 x Norway Maple (T1 - on sketch plan) crown reduction reduce by 1.5 metres in height and…
2025
Approved
Little Redcote West Common Harpenden Hertfordshire Al5 2Jw
1 x Norway Maple (T1 - on sketch plan) crown reduction reduce by 1.5 metres in height and…
2025
Approved
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
Cedar Tree (T3) - work required - Fell to ground level approx.50mm (deciduous). Cypress T…
2025
Approved
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
Cedar Tree (T3) - work required - Fell to ground level approx.50mm (deciduous). Cypress T…
2024
Approved
42A West Common Harpenden Hertfordshire Al5 2Jw
2 large conifer trees remove due to size and blocking light
2024
50 West Common Harpenden Hertfordshire Al5 2Jw
Rear garden T1 - Silver Birch - Reduce Crown by 33% to maintain size and health of the tr…
2024
1 Greyfriars Lane Harpenden Hertfordshire Al5 2Qj
Variation of Condition 2 (approved plans) to allow new chimney, alterations to openings…
2024
2 Redcote End West Common Harpenden Hertfordshire Al5 2Jw
Replacement of existing conservatory with orangery
2023
Approved
42A West Common Harpenden Hertfordshire Al5 2Jw
Variation of condition 2 (approved plans) siting dwelling house by 1.1m further south of…
2023
Approved
42A West Common Harpenden Hertfordshire Al5 2Jw
Variation of condition 2 (approved plans) siting dwelling house by 1.1m further south of…
2023
Approved
Lime House 43 West Common Harpenden Hertfordshire Al5 2Jw
Rear garden - Fell Fir tree (T1 as per plan )
2023
Approved
Lime House 43 West Common Harpenden Hertfordshire Al5 2Jw
Rear garden - Fell Fir tree (T1 as per plan )
2023
Approved
1 The Spinney 42 West Common Harpenden Hertfordshire Al5 2Jw
Existing conservatory to be removed and construction of a single storey side/rear extensi…
2023
Approved
1 The Spinney 42 West Common Harpenden Hertfordshire Al5 2Jw
Existing conservatory to be removed and construction of a single storey side/rear extensi…
2023
2 Redcote End West Common Harpenden Hertfordshire Al5 2Jw
T1 Silver Birch - root plate movement and high risk of stem failure - Fell
2016
Withdrawn
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
Single storey front extension to incorporate access to proposed dual level basement with…
2016
Withdrawn
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
Listed Building consent - Single storey front extension to incorporate access to proposed…
2016
Withdrawn
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
Single storey front extension to incorporate access to proposed dual level basement with…
2016
Withdrawn
Flowton Priory 46 West Common Harpenden Hertfordshire Al5 2Jw
St Albans
Planning Authority Score
1.1/10
Poor
#290 of 296 councils
Relevant to this application:
Householder decisions
St Albans is one of the slowest councils in England for householder decisions, ranking #285 out of 296. The council extends the time limit on 64% of applications - one of the highest rates in England. Expect your application to take longer than the standard deadline. Householder applications are slightly less likely to be approved here (88%) than the national average (90%).
Among the slowest councils in England
for householder decisions
These figures are council-wide context, not a prediction for this application.
View full council performance
St Albans decision statistics
Based on MHCLG data, the year to March 2026
87%
Overall approval rate
Above avg (87%) #180 of 296
88%
Householder approved
Below avg (90%) #226 of 296
29%
Decided in 8 weeks
Below avg (63%) #285 of 296
64%
Extended time limit
Above avg (41%) #278 of 296
74%
Minor dwellings approved
130 decided (1-9 homes)
61%
Major dwellings approved
18 decided (10+ homes)
77%
Change of use approved
26 decided
1,411
Total decisions
184 refused in the year to March 2026
Track this application
42B West Common Harpenden Hertfordshire AL5 2JW
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