45-63 Brownfields Mill Brownfields Welwyn Garden City AL7 1AN

Pending 6/2026/0766/MAJ
Extensions & alterations
Council
Welwyn Hatfield 2.2/10
Date received
30 Apr 2026
Date validated
21 May 2026
Postcode
AL7 1AN

Description

Erection of an additional storey to the roof of the building to accommodate additional office space.

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Historical activity at this location

23 nearby applications on record - archival context, not part of the live application.

Within ~100m

Nearby activity

2023 Approved
39 Brownfields Welwyn Garden City AL7 1AN
Construction and operation of a micro energy storage facility.
6/2023/1616/FULL
2023 Approved
39 Brownfields Welwyn Garden City AL7 1AN
Construction and operation of a micro energy storage facility.
6/2023/1616/FULL
2023 Approved
17-21 Brownfields Welwyn Garden City AL7 1AN
2 x Oak trees T1 & T2 - to remove major deadwood over access road and reduce low limbs fr…
6/2023/0294/TPO
2023 Approved
17-21 Brownfields Welwyn Garden City AL7 1AN
2 x Oak trees T1 & T2 - to remove major deadwood over access road and reduce low limbs fr…
6/2023/0294/TPO
2021 Approved
Welwyn Saab 36 Brownfields Welwyn Garden City AL7 1AN
Submission of details pursuant to condition 1 (construction management plan), 2 (cycles p…
6/2021/3313/COND
2021 Approved
Welwyn Saab 36 Brownfields Welwyn Garden City AL7 1AN
Submission of details pursuant to condition 1 (construction management plan), 2 (cycles p…
6/2021/3313/COND
2021 Approved
Welwyn Saab 36 Brownfields Welwyn Garden City AL7 1AN
Change of use and demolition of the existing car dealership/service centre and the erecti…
6/2021/2178/FULL
2021 Approved
Welwyn Saab 36 Brownfields Welwyn Garden City AL7 1AN
Change of use and demolition of the existing car dealership/service centre and the erecti…
6/2021/2178/FULL
2021 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Change the use from a vehicle hire depot (Sui Generis Use) to a warehouse for storage and…
6/2021/1924/FULL
2021 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Change the use from a vehicle hire depot (Sui Generis Use) to a warehouse for storage and…
6/2021/1924/FULL
2021 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Submission of details pursuant to condition 2 (location of disabled car user parking bay)…
6/2021/0883/COND
2021 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Submission of details pursuant to condition 2 (location of disabled car user parking bay)…
6/2021/0883/COND
2020 Approved
Sienna House 8 Brownfields Court Welwyn Garden City AL7 1AJ
New floor of accommodation providing 4 new flats.
6/2020/3409/FULL
2020 Approved
Sienna House 8 Brownfields Court Welwyn Garden City AL7 1AJ
New floor of accommodation providing 4 new flats.
6/2020/3409/FULL
2019 Refused
Sienna House 8 Brownfields Court Brownfields AL7 1AJ
Erection of 4 x dwellings
6/2019/2812/FULL
2019 Approved
City Park Swiftfields Welwyn Garden City AL7 1LY
Installation of 1 x non-illuminated fascia sign
6/2019/1205/ADV
2018 Approved
Pacific House Unit K City Park Swiftfields Welwyn Garden City AL7 1LY
Installation of 7 x air conditioning units
6/2018/3121/FULL
2018 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Submission of details pursuant to condition 1 (scheme of secure cycle parking) on plannin…
6/2018/2632/COND
2018 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Change of use from industrial storage (B8) to a vehicle hire facility (Sui Generis)
6/2018/1616/FULL
2018 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Installation of 1 x non-illuminated fascia sign
6/2018/1976/ADV
2018 Approved
29 Brownfields Welwyn Garden City AL7 1AN
Erection of rear extension to vacant warehouse/industrial building including alterations…
6/2018/1975/FULL
2018 Approved
Unit 2 The Polaris Centre 41 Brownfields Welwyn Garden City AL7 1AN
Installation of windows to flank and rear elevation
6/2018/0384/FULL
2017 Approved
Land adj to Unit 1 The Polaris Centre 41 Brownfields Welwyn Garden City AL7 1AN
Removal of 5 cherry trees 1-5 covered by TPO 371 (2006)
6/2017/2171/TPO
Welwyn Hatfield
Planning Authority Score
2.2/10
Poor
#262 of 292 councils
Relevant to this application:
Householder decisions

Welwyn Hatfield is slower than most councils at deciding householder applications, ranking #221 out of 292. 50% of applications have the time limit extended, above the 40% national average. Householder applications are slightly less likely to be approved here (87%) than the national average (90%).

Slower than most councils
for householder decisions
These figures are council-wide context, not a prediction for this application. View full council performance
Welwyn Hatfield decision performance
Based on MHCLG data, 2025
88%
Overall approval rate
Above avg (87%) #159 of 292
87%
Householder approved
Below avg (90%) #230 of 292
54%
Decided in 8 weeks
Below avg (64%) #221 of 292
50%
Extended time limit
Above avg (40%) #229 of 292
85%
Minor dwellings approved
62 decided (1-9 homes)
93%
Major dwellings approved
14 decided (10+ homes)
83%
Change of use approved
23 decided
630
Total decisions
78 refused in 2025
Source: MHCLG planning statistics · See full council rankings