29 Hawkshead Lane North Mymms AL9 7TD Data via plota.co.uk

6/2025/1725/LAWP - LAWFUL DEVELOPMENT - PROPOSED Withdrawn
Extensions & alterations

Proposal

Certificate of lawfulness for single storey rear extension Data via plota.co.uk

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View original council record ↗Last checked

Application progress

✓
Received
13 Aug 2025
✓
Validated
22 Oct 2025
−
Withdrawn
2 Jan 2026

Withdrawn on 2 Jan 2026 · Delegated · Last checked 9 Sept 2026

Documents 6

Plans & drawings 2

PDF 29 Hawkshead Lane, AL9 7TD - Site Plan v2.pdf (1142 kb) Document · 22 Oct 2025 View ↗ PDF LocationPlan.pdf (587 kb) Document · 13 Aug 2025 View ↗

Other documents 4

PDF 002-A v2.pdf (45 kb) Document · 20 Oct 2025 View ↗ PDF 001-A v2.pdf (47 kb) Document · 20 Oct 2025 View ↗ PDF ApplicationFormRedacted.pdf (211 kb) Document · 13 Aug 2025 View ↗ PDF form_1_cil_additional_information - 29HHL.pdf (425 kb) Document · 13 Aug 2025 View ↗

All documents on the council site ↗

Site constraints 4

Green belt: London
Inappropriate development needs very special circumstances.
Green belt policy allows a short list of exceptions, such as limited extensions and replacement buildings. Anything else needs very special circumstances that clearly outweigh the harm.
Habitat network: Network Expansion Zone
Where habitat is joined up enough to work as a network. Context, not a constraint on its own.
Also on the record
Inside the North Mymms built-up area; the 1970s provisional farmland map 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 listed building at the site · No scheduled monument at the site

Checked on 11 September 2026. Historic England, the Environment Agency, Natural England 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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Other new applications on this street

30 Jul 2026Pending

Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA

Relocation of the Transfusion Medicine Vet Pod and associated parking, landscapi...

6/2026/1337/FULL
20 Apr 2026Refused

24 Hawkshead Lane North Mymms AL9 7TB

Alteration and extension to roof with the insertion of a new rooflight. Garage c...

6/2026/0700/HOUSE

Nearby new applications

30 Jul 2026Pending

Royal Veterinary College Hawkshead Lane North Mymms AL9 7TA

Relocation of the Transfusion Medicine Vet Pod and associated parking, landscapi...

6/2026/1337/FULL

Important details

Council
Welwyn Hatfield
Application type
LAWFUL DEVELOPMENT - PROPOSED
Postcode
AL9 7TD
Received
13 Aug 2025
Validated
22 Oct 2025
Parish
North Mymms
Case officer
Show
Decision
Withdrawn
Decision date
2 Jan 2026
Decision level
Delegated
Applicant
Show
Agent
John Jacovou

Historical activity at this location

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

Within ~100m

Nearby activity

2025 Approved
41 Hawkshead Lane North Mymms AL9 7TD
Submission of details pursuant to condition number 1 (Construction Method Statement), 5 (…
6/2025/0443/COND
2025 Approved
41 Hawkshead Lane North Mymms AL9 7TD
Submission of details pursuant to condition number 1 (Construction Method Statement), 5 (…
6/2025/0443/COND
2024 Approved
41 Hawkshead Lane North Mymms AL9 7TD
Submission of details pursuant to Condition 1 (Construction Method Statement), 2 (Reptile…
6/2024/2244/COND
2022 Approved
41 Hawkshead Lane North Mymms AL9 7TD
Subdivision of the plot and the erection of a new building housing a pair of semi-detache…
6/2022/1308/FULL
2022 Approved
41 Hawkshead Lane North Mymms AL9 7TD
Subdivision of the plot and the erection of a new building housing a pair of semi-detache…
6/2022/1308/FULL
2022 Refused
41 Hawkshead Lane Hatfield AL9 7TD
Erection of part single storey, part two storey side and rear extensions and installation…
6/2022/0413/FULL
2022 Refused
41 Hawkshead Lane Hatfield AL9 7TD
Erection of part single storey, part two storey side and rear extensions and installation…
6/2022/0413/FULL
2021 Approved
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Erection of part single, part two storey side extension; basement; enlargement of roof; e…
6/2021/1048/HOUSE
2021 Approved
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Erection of part single, part two storey side extension; basement; enlargement of roof; e…
6/2021/1048/HOUSE
2020 Approved
4 Hawkshead Lane North Mymms AL9 7TB
Certificate of lawfulness for the erection of x2 single storey side extensions, single st…
6/2020/3401/LAWP
2020 Approved
4 Hawkshead Lane North Mymms AL9 7TB
Certificate of lawfulness for the erection of x2 single storey side extensions, single st…
6/2020/3401/LAWP
2020 Approved
4 Hawkshead Lane Hatfield AL9 7TB
Prior approval for the erection of a single storey rear extension measuring 8m in depth…
6/2020/3417/PN8
2020 Approved
4 Hawkshead Lane Hatfield AL9 7TB
Prior approval for the erection of a single storey rear extension measuring 8m in depth…
6/2020/3417/PN8
2020 Approved
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Erection of a part single, part two storey side extensions
6/2020/0366/HOUSE
2020 Approved
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Erection of a part single, part two storey side extensions
6/2020/0366/HOUSE
2019 Refused
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Erection of a part single, part two storey front and side extension and alterations to th…
6/2019/1381/HOUSE
2019 Approved
41 Hawkshead Lane North Mymms Hatfield AL9 7TD
Erection of two dwellings with associated parking, bins and cycle provision following the…
6/2019/0844/FULL
2019 Approved
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Certificate of lawfulness for the erection of two storey rear extension and single storey…
6/2019/0073/LAWP
2018 Refused
10 & 10A Hawkshead Lane North Mymms Hatfield AL9 7TB
Subdivision of existing single dwelling into two detached dwellings with two front porche…
6/2018/3012/FULL
2018 Refused
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Certificate of lawfulness for the erection of two storey rear extension and single storey…
6/2018/2650/LAWP
2018 Refused
41 Hawkshead Lane North Mymms Hatfield AL9 7TD
Erection of 3 dwellings with associated parking, bins and cycle provision following the d…
6/2018/2157/FULL
2017 Refused
4 Hawkshead Lane North Mymms Hatfield AL9 7TB
Two storey side extension and alterations to front entrance and roof including demolition…
6/2017/2569/HOUSE
2017 Approved
47 Hawkshead Lane North Mymms Hatfield AL9 7TD
Erection of orangery following demolition of existing conservatory
6/2017/1320/HOUSE
Welwyn Hatfield
Planning Authority Score
2.1/10
Poor
#272 of 296 councils
Relevant to this application:
Householder decisions

Welwyn Hatfield is slower than most councils at deciding householder applications, ranking #224 out of 296. 50% of applications have the time limit extended, above the 41% national average. Householder applications are slightly less likely to be approved here (86%) 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 statistics
Based on MHCLG data, the year to March 2026
86%
Overall approval rate
Below avg (87%) #200 of 296
86%
Householder approved
Below avg (90%) #246 of 296
53%
Decided in 8 weeks
Below avg (63%) #224 of 296
50%
Extended time limit
Above avg (41%) #229 of 296
84%
Minor dwellings approved
63 decided (1-9 homes)
83%
Major dwellings approved
12 decided (10+ homes)
73%
Change of use approved
22 decided
633
Total decisions
87 refused in the year to March 2026
Source: MHCLG planning statistics · See full council rankings