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Planning applications in AL9

We hold 254 planning applications for the AL9 postcode area, 115 of them submitted in the past year. 85% of decided applications here were approved. A decision typically takes 59 days. The area is covered by Welwyn Hatfield, East Hertfordshire, Yorkshire Dales.

254
applications held
115
in the past year
85%
approved
59 days
median decision

Councils covering AL9

Welwyn Hatfield (247)East Hertfordshire (6)Yorkshire Dales (1)

Recent applications in AL9

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
16 Sept 20266/2026/1537/COND
Land south of Welham Manor and west of Station Road, including 26 Station Road Welham Green AL9 7ELWelwyn Hatfield

Submission of details pursuant to Condition 15 (Fire Hydrants) on planning permission 6/2024/2418/MAJ

Pending
FULL PERMISSION
14 Sept 20266/2026/1550/FULL
73 Mymms Drive Brookmans Park AL9 7AAWelwyn Hatfield

Erection of dwelling following demolition of existing dwelling

Pending
TREES IN CONSERVATION AREA
11 Sept 20266/2026/1568/TC
Park close Park street Old HatfieldWelwyn Hatfield

4- Lime tree- re pollard back to previous pruning points. Approximately 8-10 feet of growth to be removed. 5- Lime tree- re pollard back to previous pruning points. Approximately 8-10 feet of growth to be removed. 6- Lime tree- re pollard back to previous pruning points. Approximately 8-10 feet of growth to be removed. 7- Lime tree- re pollard back to previous pruning points. Approximately 8-10 feet of growth to be removed. 8- Lime tree- re pollard back to previous pruning points. Approximately 8-10 feet of growth to be removed. 10- Lawson Cypress- this tree is dead, remove to ground level. 16- Sycamore- ivy growing through crown. Sever ivy stems close to ground level. 18- Sycamore- ivy growing through crown. Sever ivy stems close to ground level.

Pending
HOUSEHOLDER APPLICATION
11 Sept 20266/2026/1592/HOUSE
3 Lysley Place Brookmans Park AL9 6NZWelwyn Hatfield

Erection of front porch canopy

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
9 Sept 20266/2026/1572/COND
83 Brookmans Avenue Brookmans Park AL9 7QGWelwyn Hatfield

Submission of details pursuant to condition number 1 (Demolition and Construction Management Plan) on planning permission 6/2026/0138/FULL

Pending
LAWFUL DEVELOPMENT - PROPOSED
8 Sept 20266/2026/1559/LAWP
28 Pleasant Rise Hatfield AL9 5DUWelwyn Hatfield

Certificate of lawfulness for construction of a new detached, single-storey garden room/summerhouse within an existing rear garden

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
7 Sept 20266/2026/1555/COND
58 Bell Lane Brookmans Park AL9 7AYWelwyn Hatfield

Submission of details pursuant to condition number 5 (energy statement) on planning permission 6/2025/2133/FULL

Pending
FULL PERMISSION
7 Sept 20266/2026/1378/FULL
1 Meadow Close Welham Green Hatfield AL9 7NZWelwyn Hatfield

Enclosing existing amenity land with a 1.5m fence on 0.3m gravel boards

Permitted
WORKS TO TREES WITH TREE PRESERVATION ORDER
3 Sept 20266/2026/1538/TPO
Chine House Wild Hill Hatfield AL9 6EBWelwyn Hatfield

Ground works and associated root pruning/ severance of T3 (Oak) and other trees not advised to be the subject of a TPO to facilitate installation of a root barrier 66m in length and 4m in depth TPO 580 (2016)

Permitted
ADVERT CONSENT
2 Sept 20266/2026/1533/ADV
37-39 Bradmore Green Brookmans Park AL9 7QRWelwyn Hatfield

Remove old signage & replace with new

Permitted
VARIATION OF CONDITION
26 Aug 20266/2026/1022/VAR
91 The Ryde Hatfield AL9 5DNWelwyn Hatfield

Variation of condition 2 (approved plans) on planning permission 6/2025/1670/HOUSE

Permitted
HOUSEHOLDER APPLICATION
26 Aug 20266/2026/1502/HOUSE
143 The Ryde Hatfield AL9 5DPWelwyn Hatfield

Erection of single storey rear extension with raising of roof to existing extension, and alterations to openings to rear and side elevations

Permitted
APPROVAL OF DETAILS RESERVED BY CONDITION
24 Aug 20266/2026/1478/COND
27 The Grove Brookmans Park AL9 7RLWelwyn Hatfield

Submission of details pursuant to Condition 1 (details of external render) and Condition 2 (details of windows and doors) on planning permission 6/2025/1617/HOUSE

Permitted
APPROVAL OF DETAILS RESERVED BY CONDITION
21 Aug 20266/2026/1473/COND
38 The Grove Brookmans Park AL9 7RNWelwyn Hatfield

Submission of details pursuant to Condition 2 (boundary treatments) on planning permission 6/2025/0285/HOUSE

Pending
HOUSEHOLDER APPLICATION
21 Aug 20266/2026/1477/HOUSE
4 Brookmans Avenue Brookmans Park AL9 7QJWelwyn Hatfield

Retention of single storey timber structure as gym and addition of storm porch

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
18 Aug 20266/2026/1449/COND
4 Brookmans Avenue Brookmans Park AL9 7QJWelwyn Hatfield

Submission of details pursuant to Condition 4 (landscaping) on planning permission 6/2023/0622/FULL

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
17 Jul 20266/2026/1262/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to Condition 21 (Biodiversity Enhancement Plan) on planning permission 6/2024/2418/MAJ

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
7 Jul 20266/2026/1181/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to Condition 14 (Construction Phase Surface Water Management Plan) on planning permission 6/2024/2418/MAJ

Permitted
Small
WORKS TO TREES WITH TREE PRESERVATION ORDER
3 Jul 20266/2026/1161/TPO
57 Peplins Way Brookmans Park AL9 7URWelwyn Hatfield

5 DAY NOTICE: T1 Ash (///taped.excuse.inner) Removal of tree to ground level. (Covered by TPO 158 & 889 (2022))

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
25 Jun 20266/2026/1102/COND
Land south of Welham Manor and west of Station Road including 26 Station Road Welham Green AL9 7ELWelwyn Hatfield

Submission of details pursuant to Condition 9 (materials) on planning permission 6/2024/2418/MAJ

Pending
FULL PERMISSION
11 Jun 20266/2026/1030/FULL
Royal Veterinary College Hawkshead Lane North Mymms AL9 7TAWelwyn Hatfield

Proposed new manège with associated lighting, fencing, landscaping, and associated works

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
10 Jun 20266/2026/1019/COND
60 Brookmans Avenue Brookmans Park AL9 7QQWelwyn Hatfield

Submission of details pursuant to condition number 1 (Arboricultural Impact Statement, Arboricultural Method Statement and Tree Protection Plan) and 4 (electric vehicle charger) on planning permission 6/2026/0105/HOUSE

Pending
HOUSEHOLDER APPLICATION
9 Jun 20266/2026/1014/HOUSE
13 Greenfield Hatfield AL9 5HWWelwyn Hatfield

Erection of two-storey front extension

Pending
HOUSEHOLDER APPLICATION
26 May 20266/2026/0926/HOUSE
The Willows Marshmoor Lane Welham Green Hatfield AL9 7HTWelwyn Hatfield

Extension of existing residential dwelling, along with the demolition and re-construction of existing carport and store

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
6 May 20266/2026/0791/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to condition number 13 (Refuse Strategy) on planning permission 6/2024/2418/MAJ

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
27 Apr 20266/2026/0734/COND
Land south of Welham Manor and west of Station Road, including 26 Station Road Welham Green AL9 7ELWelwyn Hatfield

Submission of details pursuant to Condition 3 (Contamination through Surface Water Drainage), condition 5 (Surface Water Drainage Network) on planning permission 6/2024/2418/MAJ

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
27 Apr 20266/2026/0737/COND
55 Peplins Way Brookmans Park AL9 7URWelwyn Hatfield

Submission of details pursuant to Condition 1 (the Biodiversity Gain Plan) on planning permission 6/2025/2564/FULL

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
9 Apr 20266/2026/0622/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to Condition 7 (CEMP) and 8 (Badger Survey) on planning permission 6/2024/2418/MAJ

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
8 Apr 20266/2026/0618/COND
Land at Green Close Brookmans Park AL9 7STWelwyn Hatfield

Submission of details pursuant to Condition 6 (Surface water drainage scheme), Condition 9 (Energy statement) & Condition 10 (Noise Assessment) on planning permission 6/2022/2387/FULL

Permitted
APPROVAL OF DETAILS RESERVED BY CONDITION
7 Apr 20266/2026/0603/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to condition number 4 (Site Waste Management Plan) on planning permission 6/2024/2418/MAJ

Pending
HOUSEHOLDER APPLICATION
7 Apr 20266/2026/0595/HOUSE
60 Westland Drive Brookmans Park AL9 7UQWelwyn Hatfield

Erection of single storey rear extension, hip to gable loft conversion and insertion of rear box dormer and alterations to fenestration, following the partial demolition of detached garage, demolition of existing conservatory and the removal of chimneys

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
7 Apr 20266/2026/0604/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to Condition 6 (Construction Management Plan) on planning permission 6/2024/2418/MAJ

Pending
HOUSEHOLDER APPLICATION
2 Apr 20266/2026/0588/HOUSE
54 Georges Wood Road Brookmans Park AL9 7BUWelwyn Hatfield

Erection of a single storey rear extension, main roof raised by 1 meter in height and rear dormer with rooflights to facilitate a loft conversion

Pending
HOUSEHOLDER APPLICATION
2 Apr 20266/2026/0590/HOUSE
7 Barfolds Welham Green Hatfield AL9 7NGWelwyn Hatfield

Erection of two storey side extension

Pending
Small
TREES IN CONSERVATION AREA
2 Apr 20266/2026/0589/TC
The Limes 51 High Road Essendon Hatfield AL9 6HSWelwyn Hatfield

Oak T1 – Reduce the Oak tree by approximately 30% (3–4 metres), focusing primarily on the right-hand side to clear the overhang above the garage, and balance the crown. This work forms part of routine maintenance to manage the tree’s size in relation to its surroundings

Pending
LAWFUL DEVELOPMENT - PROPOSED
1 Apr 20266/2026/0583/LAWP
Red Lodge High Road Essendon Hatfield AL9 6HUWelwyn Hatfield

Certificate of Lawfulness for two single storey side extensions, replacement car port following removal of existing structures, new hardstanding and vehicular access gate.

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
1 Apr 20266/2026/0586/COND
Salisbury Square Hatfield AL9 5ADWelwyn Hatfield

Submission of details pursuant to condition number 22 (drainage scheme) on planning permission 6/2021/3422/MAJ

Pending
LAWFUL DEVELOPMENT - PROPOSED
30 Mar 20266/2026/0573/LAWP
Woodside Garden Lodge Wildhill Road Hatfield AL9 6DDWelwyn Hatfield

Certificate of lawfulness for the erection of a mobile home

Pending
FULL PERMISSION
27 Mar 20266/2026/0568/FULL
17A The Broadway Hatfield AL9 5HZWelwyn Hatfield

Installation of air conditioning condenser floor mounted to the rear of the building

Pending
Class B – agricultural development on units of less than 5 hectares - PRIOR APPROVAL
24 Mar 20266/2026/0535/PN19
Hill End Farm Hill End Hertford Road Hatfield AL9 5PQWelwyn Hatfield

Prior approval for the erection of agricultural building to be used as a grain store

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
24 Mar 20266/2026/0536/COND
Essendon Lodge School Lane Essendon Hatfield AL9 6HDWelwyn Hatfield

Submission of details pursuant to condition 1 (Arboricultural Impact Statement and Arboricultural Method Statement) on planning permission 6/2025/1790/HOUSE

Pending
FULL PERMISSION
23 Mar 20266/2026/0525/FULL
73 Mymms Drive Brookmans Park AL9 7AAWelwyn Hatfield

Erection of a new dwelling following demolition of the existing building

Refused
FULL PERMISSION
23 Mar 20266/2026/0522/FULL
Land to Rear of 63 Pine Grove Brookmans Park AL9 7BLWelwyn Hatfield

Erection of new dwelling and associated hard and soft landscaping

Pending
APPROVAL OF DETAILS RESERVED BY CONDITION
20 Mar 20266/2026/0518/COND
26 Station Road Welham Green Hatfield AL9 7PGWelwyn Hatfield

Submission of details pursuant to Condition 2 (Archaeological Works) on planning permission 6/2024/2418/MAJ

Withdrawn
HOUSEHOLDER APPLICATION
13 Mar 20266/2026/0465/HOUSE
Dairy Lodge High Road Essendon AL9 6HUWelwyn Hatfield

Erection of an outbuilding for use as a games room and home office

Permitted
Small
APPROVAL OF DETAILS RESERVED BY CONDITION
13 Mar 20266/2026/0462/COND
45 Dixons Hill Close Welham Green Hatfield AL9 7EFWelwyn Hatfield

Submission of details pursuant to condition number 3 (Materials). 4 (Hard and soft landscaping) and 6 (Bin stores) on planning permission 6/2021/1282/FULL, allowed under appeal reference APP/C1950/W/21/3279134

Pending
HOUSEHOLDER APPLICATION
13 Mar 20266/2026/0466/HOUSE
93 Bluebridge Road Brookmans Park AL9 7UNWelwyn Hatfield

Erection of single storey side extension, front porch with new access steps, changes to fenestration at rear to replace french door and window set with bifold doors

Pending
Small
FULL PERMISSION
13 Mar 20266/2026/0463/FULL
Land West of Woolmer’s Park The Hay Barn (Howell Court Farm) Essendon AL9 5RLWelwyn Hatfield

Demolition of existing agricultural barn and erection of a replacement self-build dwellinghouse with associated access, parking, landscaping, installation of air source heat pump and ancillary works

Refused
Small
HOUSEHOLDER APPLICATION
10 Mar 20266/2026/0433/HOUSE
The Willows Marshmoor Lane Welham Green Hatfield AL9 7HTWelwyn Hatfield

Extension of existing residential dwelling, along with the demolition and re-construction of existing carport and store

Permitted
HOUSEHOLDER APPLICATION
9 Mar 20266/2026/0425/HOUSE
93 Holloways Lane Welham Green Hatfield AL9 7NUWelwyn Hatfield

Erection of single storey rear extension following demolition of existing detached garage