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Planning Application: 6/2026/1248/LAWE
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LAWFUL DEVELOPMENT - EXISTING
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Under Consideration
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Ms Emily Kingswell
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e.kingswell@welhat.gov.uk
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North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TR
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Certificate of lawfulness of existing use as a wedding venue, conference, ceremonies, corporate events and filming
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521915
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204190
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North Mymms
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200003852593
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15/07/2026
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15/07/2026
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19/08/2026
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Mr R C SHRIMPLIN
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ACED Properties Limited
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11 CARDIFF ROAD
LUTON
LU1 1PP
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North Mymms Park Tollgate Road
North Mymms
Hatfield
Hertfordshire
AL9 7TR
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| Description | Distance |
|---|---|
| Listed Buildings Combined | 26.12 |
| Listed Buildings Combined | 0.00 |
| Listed Buildings Combined | 0.00 |
| Listed Buildings Combined | 0.00 |
| Listed Buildings Combined | 0.01 |
| Listed Buildings Combined | 37.74 |
| Listed Buildings Combined | 34.57 |
| Listed Buildings Combined | 36.04 |
| Listed Buildings Combined | 40.55 |
| Listed Buildings Combined | 0.00 |
| Listed Buildings Combined | 33.25 |
| Listed Buildings Combined | 0.00 |
| Area of Archaeological Significance | 0.00 |
| Area of Archaeological Significance | 0.00 |
| Minerals Safeguarding Area | 0.00 |
| Green Belt | 0.00 |
| Landscape Character Area | 0.00 |
| Landscape Character Area | 0.00 |
| Parish | 0.00 |
| Rights of Way | 36.79 |
| Rights of Way | 0.00 |
| Rights of Way | 0.00 |
| Rights of Way | 0.00 |
| Rights of Way | 0.00 |
| Watling Chase Community Forest | 0.00 |
| Cycle Paths | 0.00 |
| Main River | 0.00 |
| Wildlife Sites | 0.00 |
| Wildlife Sites | 0.00 |
| Hertfordshire Ecological Network | 0.00 |
| Hertfordshire Ecological Network | 0.00 |
| Hertfordshire Ecological Network | 0.00 |
| Sand and Gravel Belt | 0.00 |
| LEADS Ecology Consultation Area | 0.00 |
| Great Crested Newts DLL Risk Zones | 0.00 |
| Great Crested Newts DLL Risk Zones | 0.00 |
| NATS Safeguarding Area Wind Turbine Development | 0.00 |
| LLA Aerodrome Safeguarding Area | 0.00 |
| London Heathrow Safeguarding Area | 0.00 |
| Elstree Aerodrome Safeguarding Area | 0.00 |
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Delegated
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To download a selection of individual documents place a tick alongside each of the relevant rows and then click on Download selected files. To download all of the documents place a tick in the box alongside the header row and all of the files will be selected, then click on Download selected files. To view individual documents click on the File for the required row.
| File | Description | Date Uploaded | |
|---|---|---|---|
| Application Form - Without Personal Information | |||
| File: ApplicationFormRedacted.pdf (297 kb) | Description: Application form redacted | Created Date: 15/07/2026 | |
| Block Plan | |||
| File: 5440.02-block plan-scan.pdf (423 kb) | Description: Block Plan | Created Date: 15/07/2026 | |
| Location Plan | |||
| File: 5440.01-site location plan (original red line)-scan.pdf (715 kb) | Description: Site Location Plan | Created Date: 15/07/2026 | |
| Planning Statement | |||
| File: 5440-26.07.10-north mymms ldc-statement.pdf (182 kb) | Description: Application Statement | Created Date: 15/07/2026 | |
| Neighbour Representation - Without Personal Information | |||
| File: APPLICATION REFERENCE 6_2026_1246_LAWE_Redacted.pdf (383 kb) | Description: Objection - East lodge Tollgate road North Mymms Park AL97TW_Redacted | Created Date: 07/08/2026 | |
| File: Comments-Redacted.pdf (79 kb) | Description: Objection- Church Cottage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN -Redacted | Created Date: 11/08/2026 | |
| File: ObjectionNew_Redacted.pdf (147 kb) | Description: Objection- Church Cottage North Mymms Park Objection Redacted | Created Date: 11/08/2026 | |
| File: Comments-Redacted(1).pdf (78 kb) | Description: Objection- Church Cottage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN -Redacted | Created Date: 11/08/2026 | |
| Organisation | Name | Sent | Reply Due | Reply Received |
|---|---|---|---|---|
| Welwyn Hatfield Borough Council | Councillor Adrienne Nix | 29/07/2026 | 19/08/2026 | |
| Welwyn Hatfield Borough Council | Councillor Paul Zukowskyj | 29/07/2026 | 19/08/2026 | |
| Welwyn Hatfield Borough Council | Councillor Sandreni Bonfante | 29/07/2026 | 19/08/2026 | |
| North Mymms Parish Council | Linsey Steell | 29/07/2026 | 19/08/2026 | |
| Welwyn Hatfield Borough Council | WHBC S106 and CIL Officer | 29/07/2026 | 19/08/2026 |
| Address | Date Sent | Expiry Date | Date Reconsulted | Reconsult Expiry Date |
|---|---|---|---|---|
| St Mary's Church North Mymms Park Brookmans Park Hatfield AL9 7TN | 29/07/2026 | 19/08/2026 | ||
| The Woodshed North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TR | 29/07/2026 | 19/08/2026 | ||
| The Camp North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN | 29/07/2026 | 19/08/2026 | ||
| Red Lodge Tollgate Road North Mymms Hatfield AL9 7TW | 29/07/2026 | 19/08/2026 | ||
| Crosbys Cottage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TR | 29/07/2026 | 19/08/2026 | ||
| Church Cottage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN | 29/07/2026 | 19/08/2026 | ||
| The Old Vicarage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN | 29/07/2026 | 19/08/2026 | ||
| The Vicarage North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN | 29/07/2026 | 19/08/2026 | ||
| East Lodge Tollgate Road North Mymms Hatfield AL9 7TW | 29/07/2026 | 19/08/2026 | ||
| The Coach House North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TN | 29/07/2026 | 19/08/2026 | ||
| Bailiffs House North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TR | 29/07/2026 | 19/08/2026 | ||
| Octagon Lodge North Mymms Park Tollgate Road North Mymms Hatfield AL9 7TW | 29/07/2026 | 19/08/2026 |
| Application Number | Proposal | Decision | Distance |
|---|---|---|---|
| 6/2026/1251/MAJ | Change of use to wedding venue, conference, ceremonies, corporate events and filming (Retrospective) | ||
| 6/2026/0708/VAR | Variation or removal of Condition 2 (noise limiting system) and removal of Condition 3 (overarching Travel Plan) of planning permission 6/2022/2793/VAR | 0 | |
| 6/2026/0429/COND | Submission of details pursuant to condition number 2 (scheme for a noise limiting system) on planning permission 6/2018/3204/FULL | Withdrawn | |
| 6/2023/1488/LB | Installation of acoustic laminate secondary glazing units to all windows at the property | Granted | 0 |
| 6/2022/2793/VAR | Variation of condition 1 (limited period permission) on planning permission 6/2018/3204/FULL | Granted | |
| 6/2022/1909/FULL | Change of use of shared staff overnight accommodation to self-contained staff accommodation comprising 2 No. 1 bed units and 2 No. studio units and alterations to fenestrations | Granted | 0 |
| 6/2022/1910/LB | Change of use of shared staff overnight accommodation to self-contained staff accommodation comprising 2 No. 1 bed units and 2 No. studio units and alterations to fenestrations | Granted | 0 |
| 6/2020/3201/COND | Submission of details pursuant to condition 1 (doors and windows detailed drawings) on planning permission 6/2020/1212/FULL | Granted | 0 |
| 6/2020/3221/COND | Submission of details pursuant to condition 1 (doors and windows detailed drawings) on listed building consent 6/2020/1213/LB | Granted | 0 |
| 6/2020/1212/FULL | Extensions and alterations to the building to allow it to be converted into a single dwelling house with associated landscaping, hard surfacing and alterations to a section of the existing wall adjacent to the building to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2020/1213/LB | Extensions and alterations to the building to allow it to be converted into a single dwelling house with associated landscaping, hard surfacing and alterations to a section of the existing wall adjacent to the building to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2020/0172/COND | Submission of details pursuant to condition 3 (travel plan) on planning permission 6/2018/3204/FULL | Granted | 0 |
| 6/2019/2553/COND | Submission of details pursuant to condition 1 (details of door design) listed building consent 6/2018/3205/LB | Granted | 0 |
| 6/2019/2554/COND | Submission of details pursuant to condition 2 (noise limiting system scheme) on planning permission 6/2018/3204/FULL | Granted | 0 |
| 6/2019/1923/FULL | Extension and alterations to the building to allow it to be converted into a single dwelling house with associated landscaping, hard surfacing and alterations to a section of the existing wall adjacent to the building to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2019/1924/LB | Extension and alterations to convert the building into a single dwelling with associated landscaping, hard surfacing and alterations to a section of the existing wall to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2019/1551/LB | Extension and alterations to convert the building into a single dwelling with associated landscaping, hard surfacing and alterations to a section of the existing wall to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2019/1388/VAR | Variation of condition 10 (approved plans) on planning permission 6/2018/2715/FULL | Granted | 0 |
| 6/2019/0503/COND | Submission of details pursuant to condition 1 (Archaeological Report) on planning permission 6/2018/2715/FULL | Granted | 0 |
| 6/2018/3204/FULL | Erection of marquee and creation of external door openings to Bothies building | Granted | |
| 6/2018/3205/LB | Internal alterations and creation of new external door openings to Bothies building | Granted | 0 |
| 6/2018/2715/FULL | Extension and alterations to convert the building into a single dwelling with associated landscaping, hard surfacing and alterations to a section of the existing wall to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2018/2716/LB | Extension and alterations to convert the building into a single dwelling with associated landscaping, hard surfacing and alterations to a section of the existing wall to create a new gated opening for pedestrian access | Granted | 0 |
| 6/2018/1900/MAJ | Erection of marquee and alterations to openings of Bothies building | Withdrawn | 0 |
| 6/2018/1901/LB | Internal alterations, alterations to openings and repairs to the Bothies | Withdrawn | 0 |
| 6/2018/1998/LB | Alterations to Mens and Disabled WC | Granted | |
| 6/2018/0099/MAJ | Change of use from training centre and conference use to wedding venue, conference, ceremonies and corporate events | Granted | 0 |
| 6/2016/1040/FULL | Erection of security guard kiosk, relocation of CCTV and installation of new gates following demolition of existing kiosk and existing gates | Granted | |
| 6/2015/2502/LB | Change of paint colour of St Mary's gate and railings | Granted | |
| 6/2015/1623/LB | Conservation repair of St Mary's Walk garden walls | Granted | 0 |
| 6/2015/1579/LB | Proposed repairs and maintenance to the following garden walls at North Mymms Park: Rose Garden (south wall); Blue Garden (north-west corner of north & south elevations); Peach Range (west elevation of west wall of Blue Garden); Mansion House main car park (south-east corner walls); introduction of temporary timber raking shore (adjacent to 2011 temporary timber raking shores) to Mansion House main car park (south-east corner walls). | Granted | |
| S6/2015/0979/LB | Conservation repair to windows, roofing and masonry | Granted | |
| S6/2014/2690/AD | Installation of replacement notice board | Granted | 0 |
| S6/2014/1599/FP | Internal and external alterations, replacement windows, erection of new porch and single storey extension to existing plant space | Withdrawn | 0 |
| S6/2014/1600/LB | Internal and external alterations, replacement windows, erection of new porch and single storey extension to existing plant space | Withdrawn | |
| S6/2014/1247/FP | Internal and external alterations | Withdrawn | 0 |
| S6/2014/1248/LB | Internal and external alterations | Withdrawn | 0 |
| S6/2014/0427/LB | Restoration and repair of wrought iron screen and gates with reinstatement on new foundations with a low coping stone plint | Granted | |
| S6/2013/2116/DS | Discharge of condition 3 (approved plans), 4 (sample materials) for planning permission S6/2013/671/LB - Alterations to the Mymms Room within the Mansion House to remove existing bedroom and en-suite bathroom. To be re-instated as an open area to provide a formal meeting room | Granted | |
| S6/2013/0865/LB | Alterations to existing staff flat (located within the stables) to create three en-suite bedrooms and create access from the adjacent stairs, and alterations to existing laundry room, staff office and shared bathroom (located in stable block) to create a new bedroom with en-suite (laundry room and staff office), and alterations to shared bathroom to create an enclosed en-suite to existing bedroom | Granted | |
| S6/2013/0671/LB | Alterations to the Mymms Room within the Mansion House to remove existing bedroom and en-suite bathroom. To be re-instated as an open area to provide a formal meeting room | Granted | |
| S6/2012/1946/LB | Alterations to existing staff flat (located within the stables), to create three en-suite bedrooms & create access from the adjacent stairs | Granted | |
| S6/2010/0039/AG | ERECTION OF WOODSTORE | Granted | 0 |
| S6/2009/2703/FP | CONVERSION AND EXTENSION OF AGRICULTURAL BUILDING TO A DWELLING PLUS ERECTION OF GARAGE | Refused | 0 |
| S6/2007/1987/LB | RELOCATION OF THE EXISTING SECURITY KIOSK AND GATES. NEW SECURITY FENCE TO BOUNDARY AND GATES TO PUMP HOUSE | Granted | 0 |
| S6/2007/1991/FP | RELOCATION OF THE EXISTING SECURITY KIOSK AND GATES, NEW SECURITY FENCE TO BOUNDARY AND GATES TO PUMP HOUSE | Granted | 0 |
| S6/2006/0269/LB | NEW LEAD COVERINGS TO GAZEBO ROOFS | Refused | 0 |
| S6/2005/0662/FP | NEW EXTERNAL DOOR TO TRAINING CENTRE, NEW PARKING BAY AND ALTERATIONS TO EXTERNAL STEPS. | Granted | 0 |
| S6/2005/0312/LB | INTERNAL ALTERATIONS AND NEW EXTERNAL DOOR TO TRAINING CENTRE AND NEW PARKING BAY. | Granted | 0 |
| S6/2002/0928/FP | ALTERATIONS TO INTERNAL LAYOUT AND ELEVATIONS | Granted | 0 |
| S6/2002/0929/LB | ALTERATIONS TO INTERNAL LAYOUT AND ELEVATIONS | Granted | 0 |
| S6/2001/1299/LB | DEMOLITION OF EXISTING LEAN-TO, ALTERATIONS AND NEW PORCH | Granted | 0 |
| S6/1999/0380/LB | Alteration to existing toilet and bathroom areas to provide additional facilities | Granted | 0 |
| S6/1997/0056/LB | Replacement of coping to garden walls, repairs to stonework, brickwork and other repair work to loggia and adjacent garden walls | Granted | 0 |
| S6/1996/0981/LB | Provision of handrails to existing internal stairs in east and west towers of main house | Granted | 0 |
| S6/1996/0522/LB | Extension and restoration of existing bothy; Renewal of consent granted S6/0614/90/LB | Granted | 0 |
| S6/1995/0808/LB | Flood defence work comprising, fixing of removable external water barriers to door. Openings and air bricks, and reconstruction of external door opening | Granted | 0 |
| S6/1995/0370/LB | Alterations to external door and the addition of internal fire door | Granted | 0 |
| S6/1994/0157/LB | Widening existing gateway into Nursery Garden | Granted | 0 |
| S6/1994/0158/FP | Erection of attendants hut, driveway gates, and formation of gate to Nursery Garden | Granted | 0 |
| S6/1993/0594/FP | Temporary siting of two portakabins for use as office accommodation during construction work | Granted | 0 |
| S6/1993/0592/LB | Installation of closed circuit security television system | Granted | 0 |
| S6/1993/0543/LB | Alterations to basement to form toilets and office | Granted | 0 |
| S6/1993/0394/LB | Part removal of 19th Century chimney breast to form door opening | Granted | 0 |
| S6/1991/0598/LB | Dismantle and reconstruct brickwork dormer | Granted | 0 |
| S6/1991/0103/FP | Ancillary conference & educational use of the Mansion in association with the proposed training and leisure facilities in walled nursery garden and the existing stable block training facilities | Approval Subject to s106 | 0 |
| S6/1990/0927/LB | External repairs & alterations including removal and replacement where necessary of windows, replacement of coping stones in north & east elevations & internal alterations to second floor | Granted | 0 |
| S6/1990/0928/LB | Re-installation of spiral staircase in east tower & associated alterations & new door on ground floor of northern side of tower | Granted | 0 |
| S6/1990/0929/LB | Internal alterations including the removal of partition work and the re-use of existing windows at southern end of the east wing | Granted | 0 |
| S6/1990/0662/FP | Restoration of existing water tower and its conversion to form three residential units, and extension to form new access lobby | Approval Subject to s106 | 0 |
| S6/1990/0663/LB | Alterations and extension to the existing disused water tower to form three residential units | Approval Subject to s106 | 0 |
| S6/1990/0613/FP | Extension and restoration of existing Bothy buildings in the Nursery garden to provide further residential training facilities, car parking, landscaping and other associated leisure facilities | Approval Subject to s106 | |
| S6/1990/0614/LB | Extension and restoration of existing Bothy buildings in the Nursery garden to provide further residential training facilities, car parking, landscaping and other associated leisure facilities | Approval Subject to s106 | 0 |
| S6/1990/0615/FP | Conversion of single dwelling known as Crosby's Cottage, into two seperate dwellings and two small single storey extensions | Granted | 0 |
| S6/1990/0616/LB | Internal and external alterations and small single storey extensions, to enable the conversion of single dwelling known as Crosby's Cottage to be formed into two separate dwellings | Granted | 0 |
| S6/1990/0617/FP | Conversion of former Pump House into estate management office, maintenance workshop, and stores | Granted | 0 |
| S6/1990/0618/LB | Internal and external alterations to former Pump House to enable it to be converted to estate management office, maintenance workshop and store | Granted | 0 |
| S6/1990/0432/FP | Formation of concrete hardstanding for contractors site hut, storage and parking for use during refurbishment contracts to the main house | Granted | 0 |
| S6/1990/0182/LB | Installation of a dumb waiter involving the construction of a new enclosure on the north eastern elevation of the staff annexe to the main house | Granted | 0 |
| S6/1990/0183/LB | Demolition of disused and dilapidated greenhouses | Granted | 0 |
| S6/1990/0022/LB | Removal of Edwardian timber panelling from the Billiard Room and its temporary storage in two secure portakabins in the North Mymms Park Estate | Granted | 0 |
| S6/1990/0023/LB | Replacement of existing Edwardian panels with Jacobean panels on two walls, reproduction Jacobean panels on other two walls; new ceiling with hidden lights; new stone fireplace, repolish existing oak floor | Granted | 0 |
| S6/1989/0971/LB | Alterations to and refurbishment of exterior of part of main house | Granted | 0 |
| S6/1989/0972/LB | Alterations to and refurbishment of interior of part of main house | Granted | 0 |
| S6/1989/0973/LB | Replacement of existing floor tiles, removal of pebbledash rendering to walls with reinstatement and the provision of new brick arch and entrance door in boundary wall, relating to the Italian Gardens | Granted | 0 |
| S6/1989/0801/FP | Erection of a satellite dish and 6m high aerial mast | Granted | 0 |
| S6/1988/0364/LB | Listed building consent for replacing roofs and floors to Octagon Lodge erection temporary metal gates and new hydraulic lifting mechanism | Granted | 0 |
| S6/1988/0365/LB | Listed building consent for refurbishment of staff accommodation and new internal staircase | Granted | 0 |
| S6/1988/0366/FP | Single storey extensions to west wing - REVOKED BY S106 DATED 28 AUGUST 1991 | Granted | 0 |
| S6/1988/0367/LB | Listed building consent for additions to west wing (Application dated 03/88) - REVOKED BY S106 DATED 28 AUGUST 1991 | Granted | |
| S6/1988/0368/FP | Alterations and extensions to stable block to form a conference unit - S52 DATED 16 MARCH 1989 REVOKED BY S106 DATED 28 AUGUST 1991 | Approval Subject to s106 | 0 |
| S6/1988/0369/LB | Listed building consent for alterations and extensions to existing stable block to form a conference centre | Granted | 0 |
| S6/1985/0393/LB | Conversion of existing kitchen/yard/ service areas into internal swimming pool, lounge jacuzzi and changing facilities | Granted | 0 |
| S6/1985/0429/FP | Conversion of existing kitchen/yard/ service areas into internal swimming pool, lounge jacuzzi and changing facilities | Granted | 0 |
| S6/1984/0501/LB | Internal alterations | Granted | 0 |
| 1986/0004 | Breach of planning control consisting of the building, engineering, mining or other operation, i.e. formation and laying down of a car park without the grant of the necessary planning permission | Notice withdrawn |
There are no NMAs associated with this application