Planning Applications in AL6

Planning authorities: Welwyn Hatfield Borough Council, North Hertfordshire District Council, East Hertfordshire District Council

Search current and historic planning applications in the AL6 postcode district across Welwyn Hatfield, North Hertfordshire and East Hertfordshire - 49 in the last 90 days. Filter applications by date, status, development type, or number of homes, view them on the map, or create a free alert for new applications.

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Showing 49 of 49 applications
6/2026/0730/COND 25 Jul 2026 Approved

24 Fulling Mill Lane Welwyn AL6 9NS

Submission of details pursuant to Condition 1 (Construction Management Plan), condition 2 (Samples of the materials), condition 3 (Hard and soft lands...

Welwyn Hatfield 25 Jul 2026
6/2026/0744/EM 25 Jul 2026 Approved

1 Old Forge Close Welwyn AL6 0SR

Proposed removal of redundant boiler chimney at rear of property

Welwyn Hatfield 25 Jul 2026
3/26/1021/NMA 21 Jul 2026 Awaiting decision

12 Desborough Drive Tewin Wood Tewin Hertfordshire AL6 0HJ

Non-material amendment to 3/25/1431/HH, changes to fenestration

App for Non-Material Amendments East Hertfordshire 21 Jul 2026
6/2026/1271/TPO 20 Jul 2026 Pending

33 Oaklands Rise Welwyn AL6 0RN

TPO 673 Removal of dead hornbeam tree

Welwyn Hatfield 20 Jul 2026
6/2026/1229/TPO 13 Jul 2026 Pending

2 Bracken Lane Welwyn AL6 0RB

Remove 1 x Oak. (covered by TPO 753 (2018))

Welwyn Hatfield 13 Jul 2026
6/2026/1198/HOUSE 10 Jul 2026 Pending

9 Mardley Hill Welwyn AL6 0UE

Erection of single storey front, side and rear extension, raising the existing roof and formation of rear dormer. Alterations to the fenestration, inc...

Welwyn Hatfield 10 Jul 2026
6/2026/1200/HOUSE 10 Jul 2026 Pending

98 Harmer Green Lane Digswell Welwyn AL6 0ES

Formation of front boundary gate with brick piers and erection of rear extension, rear orangery, side porch canopy, replacement front porch, alteratio...

Welwyn Hatfield 10 Jul 2026
6/2026/1205/TPO 10 Jul 2026 Pending

12 Mardley Hill Welwyn AL6 0TN

TPO 24 T2 - 1 x Oak to remove in sections to ground level. Tree is suppressed by neighbouring tree leaving a high canopy, blocking lights to neighbour...

Welwyn Hatfield 10 Jul 2026
26/01621/LDCP 8 Jul 2026 Approved

21 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

Two storey rear extension following removal of existing single storey rear elements

Lawful Development Certificate Proposed North Hertfordshire 8 Jul 2026
6/2026/1182/TPO 7 Jul 2026 Pending

18 Great North Road Welwyn AL6 0PS

T1 - Sweet Chestnut tree - Fell one dead sweet Chestnut tree to ground level

Welwyn Hatfield 7 Jul 2026
6/2026/1121/HOUSE 29 Jun 2026 Pending

45 New Road Digswell Welwyn AL6 0AQ

Garage conversion to habitable area, front extension within existing garage roof overhang, installation of rooflights and alterations to fenestration

Welwyn Hatfield 29 Jun 2026
6/2026/1108/TPO 26 Jun 2026 Pending

16 Mardley Hill Welwyn AL6 0TN

T1 - 1 x Oak to reduce by approximately 2m height and width, ensuring to cut back clearing the house sufficiently. Oak reducing due to canopy in close...

Welwyn Hatfield 26 Jun 2026
6/2026/1099/HOUSE 25 Jun 2026 Pending

10 Windsor Close Welwyn AL6 9JZ

Erection of a single storey front extension with alterations to fenestration following the demolition of existing front porch

Welwyn Hatfield 25 Jun 2026
6/2026/1094/HOUSE 24 Jun 2026 Pending

89 Warren Way Digswell Welwyn AL6 0DL

Erection of single storey side/rear extension, new front porch/level access, new garage, new side window, widening of driveway and accessible ramp dow...

Welwyn Hatfield 24 Jun 2026
6/2026/1095/TPO 24 Jun 2026 Pending

31 Parkside Welwyn AL6 9DQ

T1 Goat Willow Pollard back to previous trimming points which is approx 3-4m off T2 Cedar Crown reduction by 2-3m approx back to previous pruning poin...

Welwyn Hatfield 24 Jun 2026
6/2026/1067/FULL 19 Jun 2026 Pending

The North Star 82 Great North Road Welwyn AL6 0TA

Use of an existing flat roof as a first-floor teaching terrace and installation of an external fire escape staircase

Welwyn Hatfield 19 Jun 2026
6/2026/1063/TC 18 Jun 2026 Approved

The Coach House Ellesfield Welwyn AL6 9HB

Reduce 1 x Horse chestnut by 2m. Cut back 1 x Sycamore to 1m beyond boundary line.

Welwyn Hatfield 18 Jun 2026
6/2026/1056/TC 17 Jun 2026 Approved

16 The Green Welwyn AL6 9EA

Fell 1 x weeping willow.

Welwyn Hatfield 17 Jun 2026
6/2026/1049/TC 16 Jun 2026 Withdrawn

41 High Street Welwyn AL6 9EF

Birch tree in corner of boundary next to residential homes, reduction in size by 30% to the overall size of the tree

Welwyn Hatfield 16 Jun 2026
6/2026/1036/LAWE 15 Jun 2026 Withdrawn

25 Bluebells Welwyn AL6 0XD

Certificate of Lawfulness for the erection of a first floor external balcony to the rear of the house

Welwyn Hatfield 15 Jun 2026
6/2026/1037/TC 15 Jun 2026 Approved

6 Hobbs Hill Welwyn AL6 9DS

Fell birch.

Welwyn Hatfield 15 Jun 2026
6/2026/1033/MAJ 12 Jun 2026 Pending

Sandyhurst 1 Welwyn By Pass Road Welwyn AL6 9HT

Erection of a 66 bedroom care home for the elderly (Use Class C2) with associated access, parking, landscaping and ancillary buildings following demol...

Welwyn Hatfield 12 Jun 2026
3/26/0823/FUL 10 Jun 2026 Awaiting decision

44 Orchard Road Tewin Hertfordshire AL6 0HN

Demolition of existing house and erection of detached two-storey dwelling with solar panels, air-source heat pump, new driveway, cycle store and bin s...

Full Application East Hertfordshire 10 Jun 2026
26/00705/FP 5 Jun 2026 Registered

Connor Gardens Danesbury Park Road Welwyn Hertfordshire AL6 9SN

Change of use of land to residential static caravans/park homes to include footpath extension, parking, improved access points and associated landscap...

Full Planning Permission North Hertfordshire 5 Jun 2026
6/2026/0991/FULL 5 Jun 2026 Pending

1 Hollybush Close Welwyn AL6 0PZ

Erection of single detached 3 bedroom dwelling to the North East of the original dwelling

Welwyn Hatfield 5 Jun 2026
6/2026/0974/TPO 3 Jun 2026 Pending

2 Woodacre Drive Welwyn AL6 0UA

T1 Oak Prune western aspect by 2 metres. (Covered by TPO24 A3 and TPO 642 (2017) G1)

Welwyn Hatfield 3 Jun 2026
6/2026/0953/TPO 1 Jun 2026 Pending

14 Birch Grove Welwyn AL6 0QP

T1-T10 Hornbeam - repollard back to previous pollard points roughly 3m cut back to main trunk. T11-T15 Hornbeam - 1.5m boundary cut back of all branch...

Welwyn Hatfield 1 Jun 2026
6/2026/0943/HOUSE 29 May 2026 Pending

69 Robbery Bottom Lane Welwyn AL6 0UL

Raising the existing roof line incorporating new rooflights, new dormer, external alterations to existing windows and doors and the creation of a new ...

Welwyn Hatfield 29 May 2026
6/2026/0908/COND 21 May 2026 Pending

59 New Road Digswell Welwyn AL6 0AL

Submission of details pursuant to Condition 14 (sustainable drainage scheme), 15 (verification report) and 16 (details of all units) on planning permi...

Welwyn Hatfield 21 May 2026
6/2026/0893/HOUSE 20 May 2026 Approved

Windy Ridge 40 Great North Road Welwyn AL6 0PX

Erection of two storey front extension with dormers, alteration to openings

Welwyn Hatfield 20 May 2026
6/2026/0850/TPO 14 May 2026 Approved

4 Mornington Digswell Welwyn AL6 0AJ

TG1 Tree Group overhanging road and footpath - Lift crowns overhanging road and foot path to 5 metres in height to allow clearance from road users and...

Welwyn Hatfield 14 May 2026
26/00639/FPH 12 May 2026 Approved

Chapel Barn Rabley Heath Road Codicote Welwyn Hertfordshire AL6 9UA

Erection of detached ancillary garden annex with decking and associated access steps

Full Permission Householder North Hertfordshire 12 May 2026
3/26/0668/HH 12 May 2026 Approved

67 Burnham Green Road Burnham Green Hertfordshire AL6 0NH

Part-conversion of garage to ancillary residential annexe, with exterior alterations including new brick platform and concrete ramp.

Householder East Hertfordshire 12 May 2026
6/2026/0825/TPO 12 May 2026 Approved

Brambles Briary Wood End Welwyn AL6 0TD

TPO 800 T1 - Chestnut tree - crown reduce by approx 4-5m - tree is multi stem and we have recently removed the whole crown on one stem due to being co...

Welwyn Hatfield 12 May 2026
26/01202/FPH 11 May 2026 Decided

Southernwood Pottersheath Road Pottersheath Welwyn Hertfordshire AL6 9ST

Single storey rear extension, alterations to fenestrations including insertion of rear first floor Juliet balcony and external cladding

North Hertfordshire 11 May 2026
6/2026/0815/HOUSE 11 May 2026 Approved

111 Warren Way Digswell Welwyn AL6 0DL

Erection of part single storey, part two storey rear extension with rooflight to ground floor roof, enlarged patio area and ground floor and first flo...

Welwyn Hatfield 11 May 2026
6/2026/0800/COND 7 May 2026 Refused

36A Reynards Road Welwyn AL6 9TP

Submission of details pursuant to condition 1 (Construction Management Plan), condition 2 (Surface Water Drainage) and condition 3 (Material Samples),...

Welwyn Hatfield 7 May 2026
26/01175/S73 6 May 2026 Decided

Robin Hood And Little John Rabley Heath Road Codicote Welwyn Hertfordshire AL6 9UB

Variation of Condition 2 (the new position of the building requires the approved drawing numbers to change) of planning permission 25/02741/FP granted...

North Hertfordshire 6 May 2026
6/2026/0788/HOUSE 6 May 2026 Approved

40 Reynards Road Welwyn AL6 9TP

Demolition of an existing derelict outbuilding and its replacement with single-storey accommodation ancillary to the main dwelling

Welwyn Hatfield 6 May 2026
6/2026/0802/TPO 6 May 2026 Approved

5 Pine Crest Welwyn AL6 0EQ

T1 Oak: 30% reduction to suitable lateral growth points. T2 & T3 Sweet chestnuts: 30% reduction to suitable lateral growth points. (Covered by TPO655)

Welwyn Hatfield 6 May 2026
26/01038/LDCP 5 May 2026 Refused

21 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

Two storey rear extension following demolition of existing rear elements.

Lawful Development Certificate Proposed North Hertfordshire 5 May 2026
6/2026/0780/TPO 5 May 2026 Approved

8 Oak Piece Welwyn AL6 0XE

Sweet Chestnut tree: under TPO 534, marked as T2 Remove Tree as it's technically dead (assessed by Ashley Grey of Ashley Trees)

Welwyn Hatfield 5 May 2026
6/2026/0782/HOUSE 5 May 2026 Approved

11 Carleton Rise Welwyn AL6 9RP

Installation of a front portico

Welwyn Hatfield 5 May 2026
6/2026/0773/TC 1 May 2026 Approved

44 Mill Lane Welwyn AL6 9ET

TG1 Sycamore, Prunus and Hazel - Coppice/pollard the Sycamore and Hazel to the height of the Laurel hedge and bring the height of the dead/Ivy-clad pa...

Welwyn Hatfield 1 May 2026
26/01131/PIP 30 Apr 2026 Approved

Land At The Rear Of 25 Danesbury Park Road Welwyn Hertfordshire AL6 9SH

Erection of up to 2 dwellings and associated infrastructure

Permission in Principle North Hertfordshire 30 Apr 2026
6/2026/0764/COND 30 Apr 2026 Approved

45 High Street Welwyn AL6 9EH

Submission of details pursuant to condition 1 (method) and 2 (structural survey and a detailed schedule of repair works) on listed building consent 6/...

Welwyn Hatfield 30 Apr 2026
3/26/0603/HH 28 Apr 2026 Approved

35 Burnham Green Road Burnham Green Hertfordshire AL6 0NL

Single storey rear extension, conversion of detached garage into habitable space, new patio and alterations to fenestration

Householder East Hertfordshire 28 Apr 2026
6/2026/0726/HOUSE 24 Apr 2026 Approved

9 Lanercost Close Welwyn AL6 0RW

Erection of a single-storey rear extension with lantern rooflight; erection of a timber pergola on raised patio; replacement of existing windows and d...

Welwyn Hatfield 24 Apr 2026
6/2026/0714/COND 22 Apr 2026 Approved

9 Wendover Lodge Church Street Welwyn AL6 9LR

Submission of details pursuant to Condition 4 (Archaeological post investigation assessment) and 11 (Energy assessment) on planning permission 6/2024/...

Welwyn Hatfield 22 Apr 2026
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Data updated daily. Source: Welwyn Hatfield, North Hertfordshire and East Hertfordshire planning portals.