Planning applications in Welwyn Hatfield, February 2026

13 Greenfield Hatfield AL9 5HW

Erection of single storey rear extension, first floor front and side extension, single storey front infill extension and alteration to fenestration

14 Brocket Road Welwyn Garden City AL8 7TY

Erection of a single storey rear and side extension

24 Warwick Avenue Cuffley Potters Bar EN6 4RS

Erection of two storey front extension & first floor side extension

11 New Road Digswell Welwyn AL6 0AE

Certificate of lawfulness for the retention of an outbuilding in the rear garden

373 Knightsfield Welwyn Garden City AL8 7NB

Erection of a single storey, flat roof extension to replace conservatory

34 Rosedale Welwyn Garden City AL7 1DR

1 x Cherry plum to reduce to approximately 3m above ground level, leaving a framework for the tree to grow on from

6 Densley Close Welwyn Garden City AL8 7JX

Erection of part two storey, part single storey side extension and formation of new parking space & crossover, following demolition of existing single storey side extension and part of attached tandem garage

16 Marlborough Close Welwyn AL6 0UG

Erection of single storey porch extension, garage conversion, first floor front extension with replacement dormer roof, enlarged first floor rear dormers, reroofing whole roof with a slate coloured plain tile and rendering of front elevation

7 Breakmead Welwyn Garden City AL7 3HG

Part garage conversion with raising of roof and insertion of roof light

7 Welwyn Hall Gardens Welwyn AL6 9LF

Erection of a detached outbuilding in the rear garden following the demolition of the existing outbuilding

Church Lodge Vineyards Road Northaw EN6 4NZ

Part garage conversion, insertion of roof lights and alterations to openings to side and rear elevations

110 Mill Green Road Welwyn Garden City AL7 3XE

3 x Leyland Cypress to reduce by around 6ft in height

4 Old Dairy Yard Welwyn Garden City AL7 4BY

Erection of first floor rear extension, loft conversion with dormers to front and rear and insertion of roof lights

4 Bulls Lane Hatfield AL9 7PD

Erection of a two storey side extension and single storey front extension following the demolition of the existing garage, single storey side extension and single storey side and rear lean-to additions. Alterations to the external materials and fenestration to the dwelling and alteration to hard and soft landscaping to the front and rear garden.

4 Attimore Road Welwyn Garden City AL8 6LW

Repainting the exterior of the house like for like & repairing any cracks in the render, including the metalwork on the front window balcony

The Galleria Comet Way Hatfield AL10 0XR

Alteration to southern highway access and adjacent internal roads

1 Applecroft Road Welwyn Garden City AL8 6JZ

Crown reduce 1 x Oak back to previous points, removing approx. 3m of regrowth. Repollard 1 x Horse Chestnut back to previous points, removing approx. 3m of regrowth

Land at South Way Hatfield AL10 8HS

Submission of details pursuant to Condition 3 (Construction Management Plan) & Condition 7 (Landscape and Ecology Management Plan (LEMP)) on planning permission 6/2023/1532/OUTLINE

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

Christchurch Baptist 110 Parkway Welwyn Garden City AL8 6HN

Installation of a Solar PV system on the flat roof section of the building

European Knowledge Centre Eisai Limited Mosquito Way Hatfield AL10 9SN

Submission of details pursuant to Conditions 1 (Construction Management Plan), 2 (Surface Water Drainage), 7 (Planting Methods and Soft Landscaping) and Condition 8 (Cycle Shelter and Cycle Provision) on planning permission 6/2022/1853/MAJ

44 Howardsgate Welwyn Garden City AL8 6BW

Installation of a new entrance door in front facade of No 44

21 Whitethorn Welwyn Garden City AL7 3EX

Installation of permeable block paved hardstanding

Red Lion Hotel 88 Great North Road Hatfield AL9 5EU

Installation of aluminium gazebo to existing outdoor seating area

52 Warren Way Digswell Welwyn AL6 0DN

Erection of single storey front extension

Hatfield Police Station Comet Way Hatfield AL10 9SJ

Installation of various illuminated signage and logos mounted on standalone totems and building façade

Elizabeth House Elizabeth Close Welwyn Garden City AL7 2JB

Submission of details pursuant to Condition 5 (method statement for interim and temporary drainage measures) and 9 (drainage details) on planning permission 6/2024/1512/MAJ (NMA1)

Warren Lodge Stables Great North Road Hatfield AL9 5JX

Change of use of land to use as a Gypsy/Traveller caravan site, comprising 9 pitches each accommodating two caravans, including no more than one static caravan/mobile home per pitch, together with the laying of hardstanding and erection of acoustic fence

12 St Johns Close Welwyn AL6 9RB

Single storey rear extension, alterations to fenestration, solar panels to rear roof slope, two air source heat pumps and extension to existing rear terrace following demolition of the existing terrace

Land at Green Close 1 Green Close Brookmans Park Hatfield AL9 7ST

Submission of details pursuant to condition number 1 (Construction Management Plan), 2 (Site hours), 3 (Approved scheme of remediation), 4 (Materials samples), 7 (Hard and soft landscape scheme), 11 (Refuse bin and recycling), 12 (Obscure glazing), 13 (First floor window glazing), 15 (EV charging), 16. (Secure cycle parking) on planning permission 6/2022/2387/FULL

23-25 Mill Lane Welwyn AL6 9EU

Submission of details pursuant to condition number 5 (Material details) and 6 (Hard and soft landscaping) on planning permission 6/2025/1212/HOUSE

23-25 Mill Lane Welwyn AL6 9EU

Submission of details pursuant to condition number 2 (Material details) on planning permission 6/2025/1211/LB

Windmill House Tylers Causeway Newgate Street Hertford SG13 8QN

Erection of single storey side extension

38 The Grove Brookmans Park AL9 7RN

Submission of Details Pursuant to Condition 2 (Boundary Treatments) on Planning Permission 6/2025/0285/HOUSE

Land at rear of 2 Woodfield Road Welwyn Garden City AL7 1JH

Erection of a new building to house a Class 7 MOT testing station in connection with Burrowfields Autos

23 Cedar Road Hatfield AL10 8NZ

Change of use from dwellinghouse (Use Class C3) to a 4 bedroom House in Multiple Occupation (Use Class C4) and installation of a cycle rack

10 Lancaster Way Welwyn AL6 9LD

Erection of a single storey rear and two-storey side extension and the formation of a vehicular access to the highway

5 Guessens Walk Welwyn Garden City AL8 6QS

Erection of timber orangery to following demolition of existing conservatory

BioPark Broadwater Road Welwyn Garden City AL7 3AX

Demolition of existing buildings and construction of residential units (Use Class C3) and community hub (Use Class E/F.2), with public realm and open space, landscaping, access, associated car and cycle parking, refuse and recycling storage and supporting infrastructure (as amended)

79 Homestead Road Hatfield AL10 0QP

Erection of single storey side extension, hardstanding and vehicle crossover

8 Attimore Road Welwyn Garden City AL8 6LW

Change of use from lawned area to hard standing for car parking

21 Windhill Welwyn Garden City AL7 1RH

Installation of solar panels

79 Holloways Lane Welham Green Hatfield AL9 7NU

Change of use from C3 (Dwelling) to C2 (Children's Home)

The Long and Short Arm 18 Lemsford Village Welwyn Garden City AL8 7TN

Submission of details pursuant to Conditions 2 (detailed technical plans),Condition 3 (Site investigation), Condition 5 (Revised Construction Method Statement), Condition 8 (Detailed section plans of houses and driveway), Condition 10 (Integrated bat/swift boxes), Condition 11(Details of Air source heat pump), Condition 12 ( Non-native species management plan), Condition 13 (Electric Vehicle Charging Points), Condition 14 (External hard & soft landscaping details), Condition 15 (External Materials), Condition 16 (Internal Layouts), Condition 17 (Refuse/recycling storage details) & Condition 19 (SuDs details) on planning permission 6/2023/1886/FULL

126 Great North Road Hatfield AL9 5JN

Extension to refrigeration area

Inspira House Martinfield Welwyn Garden City AL7 1GW

Installation of roof insulation and new edge detail, raising height by 500mm. Addition of externally mounted rainwater hoppers and downpipes

Monks Walk School Knightsfield Welwyn Garden City AL8 7NL

Erection of indoor sports hall, provision of external sports field viewing bank, and associated ground works, and hard and soft landscaping

5 The Drive Ponsbourne Park Ponsbourne Park Hertford SG13 8QS

Residential development of 2 units

The Firs Park Woodside Lane Hatfield AL9 6DG

Certificate of lawfulness for the use of land as a permanent residential caravan site without limitation

12 The Valley Green Welwyn Garden City AL8 7DQ

Erection of ground floor rear extension following the removal of existing conservatory