Planning Applications in Welwyn, Hertfordshire

Planning authority: Welwyn Hatfield Borough Council

See all 2,986 planning applications in Welwyn, Hertfordshire, since 2016, 41 in the last 90 days. Search and filter Welwyn Hatfield Borough Council's applications, see the latest on the map, or get free alerts for new ones.

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Showing 41 of 41 applications
Yesterday Under Consideration 6/2026/1941/TPO

1A Harmer Dell Welwyn AL6 0BE

Felling of a European Larch [775 (2018) T5 - individual tree] with Ganoderma

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
16 Oct 2026 Under Consultation 6/2026/1878/COND

The North Star 82 Great North Road Welwyn AL6 0TA

Submission of details pursuant to condition 9 (Noise Management Plan) and condition 11 (Access Arrangements) on planning permission 6/2026/0025/VAR

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
14 Oct 2026 Under Consideration 6/2026/1866/TC

8 The Green Welwyn AL6 9EA

T1 - 1 x Beech to reduce overhanging branches by approximately 4m

TREES IN CONSERVATION AREA Welwyn Hatfield
14 Oct 2026 Under Consideration 6/2026/1864/TPO

16 The Green Welwyn AL6 9EA

T5 to reduce overhanging branches by 2m

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
9 Oct 2026 Under Consultation 6/2026/1821/HOUSE

32 Hertford Road Digswell Welwyn AL6 0DB

Erection of a part single storey and part two storey rear extension, garage conversion with replacement roof, installation of new front door and side ...

HOUSEHOLDER APPLICATION Welwyn Hatfield
8 Oct 2026 Under Consideration 6/2026/1777/TPO

18 Oaklands Rise Welwyn AL6 0RN

TPO 638 & TPO 673 T1 – Hornbeam: Re-pollard to the previous pollarding points, removing approximately 2–3 metres of regrowth. T2 – Hornbeam: Re-pollar...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
6 Oct 2026 Under Consideration 6/2026/1774/TC

8 The Green Welwyn AL6 9EA

T1 - Ash and Lime, sharing a common crown to reduce by approximately 2.5m height and width T2 - 1 x Alder to reduce by approximately 2.5m height and w...

TREES IN CONSERVATION AREA Welwyn Hatfield
29 Sept 2026 Under Consideration 6/2026/1716/TPO

24 Marlborough Close Welwyn AL6 0UG

1 x Oak to reduce lateral branches over the garden of No.24 & 22 by approx 2m, up to a height of 10m above ground level. Remove deadwood greater than ...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
28 Sept 2026 Under Consideration 6/2026/1704/TC

28 Marlborough Close Welwyn AL6 0UG

T1 - Horse Chestnut - re pollard back to previous growth points and remove any major deadwood throughout crown

TREES IN CONSERVATION AREA Welwyn Hatfield
28 Sept 2026 Under Consideration 6/2026/1698/TC

35 Church Street Welwyn AL6 9LP

Conifer - Removal of tree leaving a stump

TREES IN CONSERVATION AREA Welwyn Hatfield
28 Sept 2026 Under Consultation 6/2026/1700/HOUSE

12 Pine Crest Welwyn AL6 0EQ

Erection of a single storey rear extension and additional floor to existing bungalow following removal of existing conservatory

HOUSEHOLDER APPLICATION Welwyn Hatfield
25 Sept 2026 Under Consideration 6/2026/1685/TC

28 Mill Lane Welwyn AL6 9ET

1 x Magnolia to reduce 1.5m width and height.

TREES IN CONSERVATION AREA Welwyn Hatfield
22 Sept 2026 Under Consideration 6/2026/1677/TPO

2 Mardley Avenue Welwyn AL6 0UD

Reduce 1 x Hornbeam by 40% crown reduction covered by TPO 643 Branches overgrown footpath/road. Encroaching bungalow roof. Leaves blocking acorn drain...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
22 Sept 2026 Under Consideration 6/2026/1641/TPO

11 Mardley Hill Welwyn AL6 0UE

Oak tree on the edge of our boundary at 11 Mardley Hill, Oaklands AL6 0UE, reduced by one third for maintenance and it hangs over the B197 main road

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
22 Sept 2026 Under Consideration 6/2026/1676/TC

Parkside House 58 Mill Lane Welwyn AL6 9ES

Tree A Sycamore reduce by 2-3m Tree B Robinia to fell due to decay and structural instability

TREES IN CONSERVATION AREA Welwyn Hatfield
21 Sept 2026 Under Consideration 6/2026/1645/HOUSE

18 Great North Road Welwyn AL6 0PS

Erection of front porch and car port

HOUSEHOLDER APPLICATION Welwyn Hatfield
16 Sept 2026 Under Consideration 6/2026/1611/COND

The North Star 82 Great North Road Welwyn AL6 0TA

Submission of details pursuant of conditions 5 (noise), 6 (EV charging points), 7 (cycle storage), 10 (travel plan statement on planning permission 6/...

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
16 Sept 2026 Approved 21 Sep 6/2026/1595/TPO

42 New Road Digswell Welwyn AL6 0AH

T17 Pine and T74 Scots Pine are both dead and now dangerous (due to leaning). Covered by TPO 817 (2018)

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
10 Sept 2026 Approved 27 Oct 6/2026/1586/TPO

3 Wendover Drive Welwyn AL6 9LT

T1 - 1 x Beech tree - crown reduce by approx 2-3m - Remove any major deadwood throughout crown

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
9 Sept 2026 Under Consideration 6/2026/1570/HOUSE

16 Mardley Avenue Welwyn AL6 0UD

Proposed loft conversion, enlargement of the existing roof with increase in ridge height to form a truncated hipped roof, installation of two front do...

HOUSEHOLDER APPLICATION Welwyn Hatfield
4 Sept 2026 Under Consultation 6/2026/1545/COND

38 New Road Digswell Welwyn AL6 0AH

Submission of details pursuant to Condition 1 (Construction Traffic Management Plan) on planning permission 6/2023/2483/FULL

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
1 Sept 2026 Under Consideration 6/2026/1526/HOUSE

32 Turpins Chase Welwyn AL6 0RR

Erection of a single storey side extension and a new garage on ground floor level, conversion of the existing garage and installation of an air source...

HOUSEHOLDER APPLICATION Welwyn Hatfield
27 Aug 2026 Approved 5 Oct 6/2026/1514/TPO

6A Wendover Drive Welwyn AL6 9LT

T1 1 x Beech to remove in sections to ground level - Tree is almost dead and in poor condition T2 1 x Beech to reduce to clear property by 1.5m - Bran...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
27 Aug 2026 Call In/Major Objection 6/2026/1441/FULL

22 The Avenue Welwyn AL6 0PP

Erection of one two-storey five bedroom detached dwelling and eight two bedroom flats laid out within two two storey blocks of four and associated inf...

FULL PERMISSION Welwyn Hatfield
20 Aug 2026 Approved 2 Oct 6/2026/1470/TPO

Glebe House Ellesfield Welwyn AL6 9HB

TPO 1016 1 x White Poplar to reduce upper canopy by approximately 10m height - Reduce upper canopy due to large volume of regrowth from historical red...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
19 Aug 2026 Under Consideration 6/2026/1431/FULL

Lodge Farm 124 Harmer Green Lane Digswell Welwyn AL6 0ET

Erection of four 4-bedroom detached dwellings with associated landscaping and parking, following the demolition of the existing stable building

FULL PERMISSION Welwyn Hatfield
19 Aug 2026 Approved 14 Oct 6/2026/1467/LB

3 Holly Hall Court Church Street Welwyn AL6 9LH

Replacement like-for-like front door and one window

LISTED BUILDING Welwyn Hatfield
19 Aug 2026 Approved 21 Oct 6/2026/1466/HOUSE

36 Warren Way Digswell Welwyn AL6 0DN

Erection of two storey side extension, part single/two storey rear extension, insertion of two front dormer windows and front porch following the demo...

HOUSEHOLDER APPLICATION Welwyn Hatfield
18 Aug 2026 Approved 2 Oct 6/2026/1440/TPO

10 Mardley Heights Welwyn AL6 0TX

4 x English Oak (Quercus robur), identified as T1, T2, T3 and T4 on the accompanying sketch plan, protected under TPO 641 (2017). Proposed works: Crow...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
18 Aug 2026 Approved 13 Oct 6/2026/1456/HOUSE

8 The Limberlost Welwyn AL6 9TS

Erection of single storey side extension and front porch canopy

HOUSEHOLDER APPLICATION Welwyn Hatfield
14 Aug 2026 Refused 9 Oct 6/2026/1436/FULL

8 Robbery Bottom Lane Welwyn AL6 0UW

Erection of two 3-bed chalet bungalows (Use Class C3) following the subdivision of existing residential plot

FULL PERMISSION Welwyn Hatfield
14 Aug 2026 Approved 16 Oct 6/2026/1432/TPO

1 Oaklands View Welwyn AL6 0RJ

TPO 203 & 879 - T1- Sweet chestnut tree to reduce all round by 2-3 metres for maintenance and light T2- Blue Atlantic Cedar tree- to cut back by 2-3 m...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
13 Aug 2026 Under Consultation 6/2026/1422/TPO

8 Bluebells Welwyn AL6 0XD

TPO 639 (2017) - Trim two Hornbeam Trees by 25 to 30%

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
11 Aug 2026 Approved 13 Aug 6/2026/1416/TPO

43 Harmer Green Lane Digswell Welwyn AL6 0AP

TPO 658 - Fell dead pine tree and dying Silver birch tree

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
6 Aug 2026 Approved 1 Oct 6/2026/1376/HOUSE

18 Briary Wood Lane Welwyn AL6 0TF

Erection of a single storey ground floor extension & part two storey rear, raising the roof and alterations to facilitate loft conversion to include n...

HOUSEHOLDER APPLICATION Welwyn Hatfield
6 Aug 2026 Approved 16 Oct 6/2026/1393/TPO

10 Bluebells Welwyn AL6 0XD

T1 & T2 Hornbeam reduce back to previous pruning points 25% or approximately 2.5m (TPO 639 2017)

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
5 Aug 2026 Approved 25 Sep 6/2026/1390/HOUSE

38 Butterwick Way Welwyn AL6 9GH

Loft conversion with side facing dormer and 4 roof lights

HOUSEHOLDER APPLICATION Welwyn Hatfield
5 Aug 2026 Approved 10 Sep 6/2026/1370/LAWP

17-17A Mill Lane Welwyn AL6 9EU

Certificate of lawfulness for the change of use of offices to 3 x 2 bedroom flats

LAWFUL DEVELOPMENT - PROPOSED Welwyn Hatfield
5 Aug 2026 Withdrawn 21 Sep 6/2026/1305/TPO

20 Mardley Avenue Welwyn AL6 0UD

Up to a 2m reduction to Cherry tree, to maintain its healthy station and prevent over extension, from growing too large. Fell, process and remove Yew ...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
31 Jul 2026 Under Consideration 6/2026/1355/FULL

Welwyn Pump Station School Lane Welwyn AL6 9PL

Erection of nine dwellings following demolition of existing garages and office building with associated access, internal roads, parking, landscaping, ...

FULL PERMISSION Welwyn Hatfield
31 Jul 2026 Under Consideration 6/2026/1330/HOUSE

7 Elmoor Close Welwyn AL6 9PF

Erection of single storey rear extension with undercroft storage and associated landscaping/land level alterations, alterations to fenestration and pa...

HOUSEHOLDER APPLICATION Welwyn Hatfield
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Data updated daily. Source: Welwyn Hatfield Borough Council planning portal.