Search Welwyn Hatfield Borough Council planning applications

Search current and historic planning applications published by Welwyn Hatfield Borough Council - 408 applications in the last 90 days across 14 towns and areas and 10 postcode districts. Filter applications by date, status, development type, or number of homes, view them on the map, or create a free alert for new applications. In the year to March 2026, Welwyn Hatfield Borough Council decided 633 planning applications and approved 86%; 53% of householder decisions were made within eight weeks.

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Source: Welwyn Hatfield Borough Council·Updated daily·Last checked 12 Sept 2026

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Showing 50 of 408 applications
7 Sept 2026 Under Consideration 6/2026/1555/COND

58 Bell Lane Brookmans Park AL9 7AY

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

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
7 Sept 2026 Under Consultation 6/2026/1343/MAJ

Welwyn Garden City Golf Club Mannicotts Welwyn Garden City AL8 7BP

Installation of new doors to rear elevation

MAJOR DEVELOPMENT Welwyn Hatfield
4 Sept 2026 Under Consideration 6/2026/1547/TC

28 Parkfields Welwyn Garden City AL8 6ED

1 x Weeping Birch to reduce height by approx 1.5m and width

TREES IN CONSERVATION AREA Welwyn Hatfield
3 Sept 2026 Under Consultation 6/2026/1538/TPO

Chine House Wild Hill Hatfield AL9 6EB

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...

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
3 Sept 2026 Under Consultation 6/2026/1494/PN8

6 West View Hatfield AL10 0PJ

Prior approval for the erection of a single storey rear extension measuring 6m in depth, 3m in height and 3m to the eaves

Class A – enlargement, improvement or other alteration of a dwellinghouse - PRIOR APPROVAL Welwyn Hatfield
2 Sept 2026 Under Consultation 6/2026/1533/ADV

37-39 Bradmore Green Brookmans Park AL9 7QR

Remove old signage & replace with new

ADVERT CONSENT Welwyn Hatfield
2 Sept 2026 Withdrawn 6/2026/1531/TPO

37 The Ridgeway Cuffley EN6 4BB

T1 English Oak (Quercus robur) ref T316 fell to ground level

WORKS TO TREES WITH TREE PRESERVATION ORDER Welwyn Hatfield
1 Sept 2026 Under Consultation 6/2026/1527/COND

Land at Hollybush Lane to the east of A1000 and north of Ascots Lane Welwyn Garden City AL7 4EG

Submission of details pursuant to condition numbers 1 (Construction Environmental Management Plan), 2 (Arboricultural Method Statement and Tree Protec...

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
1 Sept 2026 Under Consultation 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
1 Sept 2026 Under Consultation 6/2026/1523/EMT

5 Hitherway Welwyn Garden City AL8 7RG

4 x Whitebeams to fell. No replanting

ESTATE MANAGEMENT TREES Welwyn Hatfield
28 Aug 2026 Under Consultation 6/2026/1518/HOUSE

48 Great Ganett Welwyn Garden City AL7 3DE

Erection of single storey rear extension

HOUSEHOLDER APPLICATION Welwyn Hatfield
28 Aug 2026 Under Consultation 6/2026/1487/EM

5 Ashley Close Welwyn Garden City AL8 7LH

Proposed addition of a 3104 x 5474 mm pent roofed wooden shed to rear garden

ESTATE MANAGEMENT Welwyn Hatfield
28 Aug 2026 Under Consideration 6/2026/1240/LAWP

45 Briars Wood Hatfield AL10 8DH

Certificate of lawfulness for driveway and dropped kerb

LAWFUL DEVELOPMENT - PROPOSED Welwyn Hatfield
28 Aug 2026 Pending 6/2026/1424/VAR

18 Birchwood Close Hatfield AL10 0PP

Variation of Condition 1 (Arboricultural Method Statement and Tree Protection Plan) and Condition 2 (External Materials) on planning permission 6/2025...

VARIATION OF CONDITION Welwyn Hatfield
27 Aug 2026 Under Consideration 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 Under Consideration 6/2026/1507/TC

10 Scholars Mews Welwyn Garden City AL8 7JQ

1 x Crab Apple to reduce by approx 1.2m height and width

TREES IN CONSERVATION AREA Welwyn Hatfield
27 Aug 2026 Under Consultation 6/2026/1445/ADV

Pavement Outside 37-40 Wigmores North Welwyn Garden City AL8 6PH

Installation of 2x advertisement panels on either side of Street Hub Unit

ADVERT CONSENT Welwyn Hatfield
27 Aug 2026 Pending 6/2026/1506/LAWP

Gosmore Brocket Road Welwyn Garden City AL8 7TT

Erection of single storey side extensions x 2 and two storey rear extension

LAWFUL DEVELOPMENT - PROPOSED Welwyn Hatfield
27 Aug 2026 Refused 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
27 Aug 2026 Pending 6/2026/1384/FULL

41 Howardsgate Welwyn Garden City AL8 6AP

Change of use from Class E to Sui Generis, installation of kitchen extraction canopy and air supply system on the rear flat roof and 3x cowl lights an...

FULL PERMISSION Welwyn Hatfield
27 Aug 2026 Pending 6/2026/1383/ADV

41 Howardsgate Welwyn Garden City AL8 6AP

Installation of 1x illuminated fascia sign, 1x illuminated hanging sign, retractable awning, 3x cowl lights, 2x internal digital screens and vinyl sig...

ADVERT CONSENT Welwyn Hatfield
27 Aug 2026 Pending 6/2026/1303/HOUSE

9 Youngs Rise Welwyn Garden City AL8 6RT

Erection of a single storey side extension, part single and part two storey rear extension, with alterations to openings on side elevations and new pa...

HOUSEHOLDER APPLICATION Welwyn Hatfield
26 Aug 2026 Under Consultation 6/2026/1502/HOUSE

143 The Ryde Hatfield AL9 5DP

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

HOUSEHOLDER APPLICATION Welwyn Hatfield
26 Aug 2026 Under Consideration 6/2026/1497/TC

2 Valley Road Welwyn Garden City AL8 7DF

1 x Holly to reduce height by approximately 3m height 1 x Lawson cypress to reduce by approximately 2.5m in height. 1 x Plum to reduce height by appro...

TREES IN CONSERVATION AREA Welwyn Hatfield
26 Aug 2026 Under Consultation 6/2026/1499/EMT

49 Knightsfield Welwyn Garden City AL8 7JE

1 x Irish Yew to remove in sections to ground level. Remove as tree is close to front room window and blocking the light. Tree owner is also elderly a...

ESTATE MANAGEMENT TREES Welwyn Hatfield
26 Aug 2026 Under Consultation 6/2026/1476/HOUSE

9 Barleycroft Green Welwyn Garden City AL8 6JY

Replacement of existing wooden garage with wooden shed

HOUSEHOLDER APPLICATION Welwyn Hatfield
26 Aug 2026 Under Consultation 6/2026/1084/FULL

1 Heay Fields Welwyn Garden City AL7 2EH

Change of use from general amenity land to residential to include the alteration and extension of the existing brick wall

FULL PERMISSION Welwyn Hatfield
26 Aug 2026 Under Consultation 6/2026/1022/VAR

91 The Ryde Hatfield AL9 5DN

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

VARIATION OF CONDITION Welwyn Hatfield
26 Aug 2026 Pending 6/2026/1503/LAWE

27 Batterdale Hatfield AL9 5JG

Certificate of lawfulness for the existing like-for-like replacement of damaged and aged windows on the front and rear elevations

LAWFUL DEVELOPMENT - EXISTING Welwyn Hatfield
26 Aug 2026 Pending 6/2026/1452/FULL

51-53 London Road Woolmer Green SG3 6JE

Retrospective application for the installation of palisade fencing and gates adjoining highway.

FULL PERMISSION Welwyn Hatfield
25 Aug 2026 Under Consultation 6/2026/1498/HOUSE

6 West View Hatfield AL10 0PJ

Erection of part single part two-storey rear extension

HOUSEHOLDER APPLICATION Welwyn Hatfield
25 Aug 2026 Under Consideration 6/2026/1496/LAWP

6 West View Hatfield AL10 0PJ

Certificate of lawfulness for erection of single storey rear extension, side and rear extension, hip to gable loft conversion with rear dormer

LAWFUL DEVELOPMENT - PROPOSED Welwyn Hatfield
25 Aug 2026 Under Consultation 6/2026/1495/EMT

2 Valley Road Welwyn Garden City AL8 7DF

1 x Holly to reduce height by approx 3m height 1 x Lawson Cypress to reduce by approx 2.5m in height 1 x Plum to reduce height by approx 3m 1 x Apple ...

ESTATE MANAGEMENT TREES Welwyn Hatfield
25 Aug 2026 Under Consideration 6/2026/1492/TC

49 Knightsfield Welwyn Garden City AL8 7JE

1 x Irish Yew to remove in sections to ground level. Remove as tree is close to front room window and blocking the light

TREES IN CONSERVATION AREA Welwyn Hatfield
25 Aug 2026 Under Consultation 6/2026/1491/VAR

Land at Great North Road Stanborough Welwyn Garden City AL8 7TQ

Variation of condition 28 (approved plans) on planning permission 6/2025/0764/FULL

VARIATION OF CONDITION Welwyn Hatfield
25 Aug 2026 Under Consultation 6/2026/1485/EMT

82 Attimore Road Welwyn Garden City AL8 6LP

Remove Ash tree stem to ground level - tree is in the way of fence/boundary line.

ESTATE MANAGEMENT TREES Welwyn Hatfield
24 Aug 2026 Under Consideration 6/2026/1489/LAWP

23 The Ridgeway Potters Bar EN6 4BB

Certificate of lawfulness for the erection of an outhouse to accommodate gym facilities

LAWFUL DEVELOPMENT - PROPOSED Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1488/EM

9 Autumn Grove Welwyn Garden City AL7 4DB

Installation of 1 x Extreme uPVC french door set, Smooth White uPVC frames inside & out, Multipoint locking mechanism, Ultion High Security door cylin...

ESTATE MANAGEMENT Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1483/COND

57 Tolmers Road Cuffley Potters Bar EN6 4JG

Submission of details pursuant to condition number 3 (Hard and Soft Landscaping) on planning permission 6/2026/0435/FULL

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1482/TC

29 Sheepcote Welwyn Garden City AL7 4QA

Remove 40ft ash tree - The ash tree is showing signs of basal decay and structural defects from previous poor pruning, raising concerns over its long-...

TREES IN CONSERVATION AREA Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1481/TC

82 Attimore Road Welwyn Garden City AL8 6LP

Remove Ash tree stem to ground level

TREES IN CONSERVATION AREA Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1479/HOUSE

6 Marsden Road Welwyn Garden City AL8 6XZ

Erection of single storey side extension and part single, part two storey rear extension

HOUSEHOLDER APPLICATION Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1381/EM

8 Meadow Green Welwyn Garden City AL8 6SS

Installation of 15 Panels on rear elevation

ESTATE MANAGEMENT Welwyn Hatfield
24 Aug 2026 Under Consultation 6/2026/1291/EMT

15 Fallowfield, Welwyn Garden City, AL7 1EE

Remove 1 x crab apple tree. Remove 1 x rotten tree. Remove 1 x tree. Remove 1 x holly bush.

ESTATE MANAGEMENT TREES Welwyn Hatfield
24 Aug 2026 Pending 6/2026/1478/COND

27 The Grove Brookmans Park AL9 7RL

Submission of details pursuant to Condition 1 (details of external render) and Condition 2 (details of windows and doors) on planning permission 6/202...

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
21 Aug 2026 Under Consultation 6/2026/1477/HOUSE

4 Brookmans Avenue Brookmans Park AL9 7QJ

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

HOUSEHOLDER APPLICATION Welwyn Hatfield
21 Aug 2026 Under Consultation 6/2026/1472/HOUSE

16 Oak Road Woolmer Green SG3 6LS

Erection of part single, part two storey rear extension, new windows and doors to existing side and rear elevations and installation of rooflight with...

HOUSEHOLDER APPLICATION Welwyn Hatfield
21 Aug 2026 Pending 6/2026/1473/COND

38 The Grove Brookmans Park AL9 7RN

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

APPROVAL OF DETAILS RESERVED BY CONDITION Welwyn Hatfield
20 Aug 2026 Pending 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
20 Aug 2026 Pending 6/2026/1474/FULL

108 Tolmers Road Cuffley Potters Bar EN6 4JR

Proposed replacement dwelling

FULL PERMISSION Welwyn Hatfield
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All towns and areas in Welwyn Hatfield (14)
Brookmans ParkColney HeathCuffleyEssendonHatfieldNewgate StreetNorth MymmsNorthaw and CuffleyPotters BarTewin WoodWelham GreenWelwynWelwyn Garden CityWoolmer Green
Postcode districts in Welwyn Hatfield (10)
AL10AL4AL6AL7AL8AL9EN2EN6SG13SG3

Decisions in Welwyn Hatfield Full decision record →

55daysmedian to decide3 days slower than UK
69%decided within 8 weeks4 pts below UK
90%approved1 pts above UK
231of 322UK rank for speeddown 34 places on last year

1,377 decisions in the 12 months to August 2026 · fewer than 1% went to committee. Days run from validation to decision, the clock councils report against; Plota live figures.

Frequently asked questions

How long does Welwyn Hatfield Borough Council take to decide a planning application?
Across the 1,377 applications Welwyn Hatfield Borough Council decided in the last 12 months, the median time from validation to decision was 55 days, and 69% were decided within 8 weeks. The UK median over the same period is 52 days.
What proportion of planning applications does Welwyn Hatfield Borough Council approve?
90% of the applications Welwyn Hatfield Borough Council decided in the last 12 months were approved. Withdrawn applications are not counted as decisions.
Where does this planning application data come from?
Every application on this page comes from Welwyn Hatfield Borough Council's public planning register (planning.welhat.gov.uk). Plota collects it, adds a map location and a category, and links each record back to the council's own entry, which is the authoritative version.
How often is this page updated?
Plota checks Welwyn Hatfield Borough Council's register every day and adds new applications, status changes and decisions as the council publishes them. The register was last checked on 12 Sept 2026.
Where can I see the plans and documents for an application?
Plans, drawings and officer reports are held on Welwyn Hatfield Borough Council's own website. Where the council publishes a document list, it appears on the application's page here with each item linking to the council's copy; otherwise the "View original council record" link on every application opens the council's entry.

About this data

Plota holds 1,737 current planning applications from Welwyn Hatfield Borough Council, received since 31 Mar 2025, 408 of them in the last 90 days. Behind them, the Plota archive holds 23,505 earlier applications from Welwyn Hatfield Borough Council, 2016 to 2025, searchable by location and keyword. Current records are collected from the council's public register at planning.welhat.gov.uk and checked every day; the last check was on 12 Sept 2026. Each record carries the council's reference, address, proposal, dates, status and decision, with a map location and Plota's classification by type and procedure added. The council's own record is the authoritative version; every entry here links to it.

Latest application from Welwyn Hatfield: 7 Sept 2026. We check the council's portal daily.