100 Crabtree Lane Harpenden Hertfordshire AL5 5RF
Under Consultation
5/2026/0730 - HSE
Description
Removal of rear garden store, erection of first floor side extension over existing ground floor footprint and associated internal alterations
Nearby new applications
Units 6 & 7 Batford Mill Lower Luton Road Harpenden AL5 5ES
***NMA***
Batford Mill Lower Luton Road Harpenden Hertfordshire
***NMA****
6 Barton Close Harpenden Hertfordshire AL5 4QT
46 Chesterton Avenue Harpenden Hertfordshire AL5 5SU
***HSE***
8 Barton Close Harpenden Hertfordshire AL5 4QT
6 Barton Close Harpenden Hertfordshire AL5 4QT
Prior Notification - Single storey rear extension 3m in height x 6m in depth wit...
Historical activity at this location
25 nearby applications on record - archival context, not part of the live application.
Within ~100m
Nearby activity
2025
With conditions
34 Holly Walk Harpenden Hertfordshire Al5 5Rg
New front porch in place of existing and single storey rear infill extension
2025
With conditions
34 Holly Walk Harpenden Hertfordshire Al5 5Rg
New front porch in place of existing and single storey rear infill extension
2025
22 Weybourne Close Harpenden Hertfordshire Al5 5Re
Single storey front and rear extensions, loft conversion with dormer window to rear and r…
2025
22 Weybourne Close Harpenden Hertfordshire Al5 5Re
Single storey front and rear extensions, loft conversion with dormer window to rear and r…
2025
With conditions
6 Holly Walk Harpenden Hertfordshire Al5 5Rg
Part single, part two storey side and rear extensions, with rooflights to single storey…
2025
With conditions
6 Holly Walk Harpenden Hertfordshire Al5 5Rg
Part single, part two storey side and rear extensions, with rooflights to single storey…
2024
With conditions
94 Crabtree Lane Harpenden Hertfordshire Al5 5Rf
Single storey front extension and single storey rear extension with rooflights, garage co…
2024
With conditions
94 Crabtree Lane Harpenden Hertfordshire Al5 5Rf
Loft conversion with installation of rear dormer window, rooflights and internal alterati…
2024
With conditions
141A Crabtree Lane Harpenden Hertfordshire Al5 5Rd
Replacement of existing conservatory with single storey rear extension
2023
141 Crabtree Lane Harpenden Hertfordshire Al5 5Rd
Removal of existing conservatory and construction of single story rear extension with roo…
2023
141 Crabtree Lane Harpenden Hertfordshire Al5 5Rd
Removal of existing conservatory and construction of single story rear extension with roo…
2023
32 Holly Walk Harpenden Hertfordshire Al5 5Rg
Single storey front extension with replacement pitched roof and garage conversion to habi…
2023
32 Holly Walk Harpenden Hertfordshire Al5 5Rg
Single storey front extension with replacement pitched roof and garage conversion to habi…
2023
30 Holly Walk Harpenden Hertfordshire Al5 5Rg
Demolition of garage/store and construction of single storey front and side extension wit…
2023
30 Holly Walk Harpenden Hertfordshire Al5 5Rg
Demolition of garage/store and construction of single storey front and side extension wit…
2023
8 Holly Walk Harpenden Hertfordshire Al5 5Rg
Alterations and extension to existing loft to include rear dormer window
2023
8 Holly Walk Harpenden Hertfordshire Al5 5Rg
Alterations and extension to existing loft to include rear dormer window
2022
With conditions
10 Holly Walk Harpenden Hertfordshire Al5 5Rg
Single storey rear extension with lantern light, alterations to openings
2022
With conditions
10 Holly Walk Harpenden Hertfordshire Al5 5Rg
Single storey rear extension with lantern light, alterations to openings
2022
With conditions
7 Holly Walk Harpenden Hertfordshire Al5 5Rg
Part single, part two storey side and rear, and single storey front extensions, rear juli…
2017
With conditions
34 Holly Walk Harpenden Hertfordshire Al5 5Rg
Double garage following demolition of existing garage
2016
With conditions
14B Holly Walk Harpenden Hertfordshire Al5 5Rg
Two storey front extension and new porch
2016
With conditions
14B Holly Walk Harpenden Hertfordshire Al5 5Rg
Two storey front extension and new porch
2016
Approved
149 Crabtree Lane Harpenden Hertfordshire Al5 5Rd
Prior Notification - Single storey rear extension 4m depth x 3.892m height x 3m in height…
2016
Approved
149 Crabtree Lane Harpenden Hertfordshire Al5 5Rd
Prior Notification - Single storey rear extension 4m depth x 3.892m height x 3m in height…
St Albans
Planning Authority Score
1.2/10
Poor
#287 of 292 councils
Relevant to this application:
Householder decisions
St Albans is one of the slowest councils in England for householder decisions, ranking #282 out of 292. The council extends the time limit on 61% 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 performance
Based on MHCLG data, 2025
86%
Overall approval rate
Below avg (87%) #195 of 292
88%
Householder approved
Below avg (90%) #223 of 292
32%
Decided in 8 weeks
Below avg (64%) #282 of 292
61%
Extended time limit
Above avg (40%) #270 of 292
71%
Minor dwellings approved
127 decided (1-9 homes)
69%
Major dwellings approved
16 decided (10+ homes)
77%
Change of use approved
22 decided
1,375
Total decisions
195 refused in 2025