134 Topstreet Way Harpenden Nhertfordshire AL5 5TS
Under Consultation
5/2026/0667 - HSE
Description
Part garage conversion, a loft conversion including a hip to-gable extension to the main roof, the formation of a flat roof rear dormer window, installation of rooflights to the front roof slope, and alterations to existing openings on the rear elevation,
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Post
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
65 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Single storey side extension with roof lights, loft conversion with rear dormer window an…
2025
With conditions
65 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Single storey side extension with roof lights, loft conversion with rear dormer window an…
2025
106 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Change of hip to gable roof to enable loft conversion with rear dormer window and front r…
2025
106 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Change of hip to gable roof to enable loft conversion with rear dormer window and front r…
2025
With conditions
71 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Single storey front extension and part single, part two storey side and rear extension, a…
2025
With conditions
71 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Single storey front extension and part single, part two storey side and rear extension, a…
2025
With conditions
83 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Addition of sliding doors and rooflights to the rear at ground floor, internal reconfigur…
2025
With conditions
83 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Addition of sliding doors and rooflights to the rear at ground floor, internal reconfigur…
2023
73 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Loft conversion with hip to gable roof extension, rear dormer window, roof lights and new…
2023
73 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Loft conversion with hip to gable roof extension, rear dormer window, roof lights and new…
2022
With conditions
80 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Single storey rear extension, first floor side extension, loft conversion with rear dorme…
2022
With conditions
80 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Single storey rear extension, first floor side extension, loft conversion with rear dorme…
2022
With conditions
75 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Single storey front and rear extensions, two storey side extension, loft conversion with…
2022
With conditions
75 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Single storey front and rear extensions, two storey side extension, loft conversion with…
2022
With conditions
78 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Single storey side extension, single storey front extension and part single storey and pa…
2022
With conditions
78 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Single storey side extension, single storey front extension and part single storey and pa…
2022
With conditions
120 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Single storey side extension
2022
With conditions
120 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Single storey side extension
2021
With conditions
69 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Part single, part two storey side and rear extension with rooflights, new front porch roo…
2021
With conditions
69 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Part single, part two storey side and rear extension with rooflights, new front porch roo…
2016
With conditions
109 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Demolition of garage, erection of single storey side and rear extensions with rooflights…
2016
With conditions
122 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Two storey side and rear extension with loft conversion including front rooflights and re…
2016
With conditions
122 Topstreet Way Harpenden Hertfordshire Al5 5Ts
Two storey side and rear extension with loft conversion including front rooflights and re…
2016
With conditions
73 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Part Single, Part Two Storey Side and Rear Extension and Rear Summerhouse (Resubmission F…
2016
With conditions
73 Topstreet Way Harpenden Hertfordshire Al5 5Ty
Part Single, Part Two Storey Side and Rear Extension and Rear Summerhouse (Resubmission F…
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