Planning application
Mounton House Unit 5-6 Chepstow Monmouthshire NP16 6DF
Works: Extension Loft or dormer Demolition Windows or glazing Small domestic
Read from the description, not a valuation. How we read the register
Permission granted. Work must normally begin within five years of the decision or the permission lapses.
Proposal
Re-reroofing of the outbuildings (units 5-10), the partial demolition and internal alteration to units 9 & 10, and alterations to the garden, including a natural swimming pool. Works to Unit 10: Returns the cart shed back into a standalone outbuilding with an ancillary use as an orangerie. to Mounton House, the principal dwelling, demolition of the recent infill extension between residential buildings Unit 9 and Unit 10. Works to Unit 9: Removing the separating floor & stair dormer windows will be removed from both Unit 9 & 10 Reroofing outbuildings: Garden Restoration
As published by the council, reference DM/2025/01048
Application record
- Reference
- DM/2025/01048
- Type
- Planning Permission
- Status
- Decided
- Decision
- Granted As published: Approve
- Received
- 7 Aug 2025
- Validated
- 4 Sep 2025
- Decided
- 2 Apr 2026
- Ward
- Shirenewton
- Parish
- Mathern Community Council
- Decision by
- Delegated Officer
- Postcode
- NP16 6DF
Site history
Applications at this address on the Monmouthshire register
This site has had 2 applications since 2025: 2 approved, 0 refused.
-
DM/2025/01049 Granted
Mounton House Unit 5-6 Chepstow Monmouthshire NP16 6DF
Re-reroofing outbuildings, partial demolition and internal alterations, and garden restoration, including a natural swimming pool. Including demolition of recent extension, removal of dormers, reinstating Welsh slate roof, restoration of Parterre Garden and Rose Garden to reflect Henry Avery Tipping's original vision.
Timeline
Dates from the published record
-
7 Aug 2025
Received by Monmouthshire
-
4 Sep 2025
Validated
Checked as complete and ready for consideration.
-
2 Apr 2026
Decision issued: Approve
-
28 Jul 2026
Added to PlanIndex
Related applications
Cases linked to this one on the register
- Application: DM/2025/01049 (Decided)
Documents
Plans, drawings, consultee responses and the officer's report
94 documents on file for this application
- OFFICER REPORT
- FULL APPROVAL DECISION NOTICE
- MCC ECOLOGY
- MCC BIODIVERSITY
- HOLDING OBJECTION - BIODIVERSITY
- BIODIVERSITY ENHANCEMENT STRATEGY
- PRECAUTIONARY WORKING METHOD STATEMENT
- PROPOSED ROOF PLAN 5 & 6
- EXISTING_FIRST_FLOOR_PLAN
- MOUNTON HOUSE OUTBUILDINGS CATALOGUE OF PHOTOS
- PROPOSED ROOF PLAN
- PHOTOS UNITS 5-10
- LETTER FROM AGENT
- EXISTING FIRST FLOOR
- EMAIL LOG 16:13
- DC_2007_00798 - EXISTING FIRST FLOOR PLAN
- CORR - ADDITIONAL ECOLOGICAL INFORMATION
- OUTBUILDINGS - CATALOGUE OF PHOTOS
- GREEN INFRASTRUCTURE STATEMENT
- BIODIVERSITY ENHANCEMENT STRATEGY
- MOUNTON HOUSE ESTATE TREES 1
- MOUNTON HOUSE ESTATE TREES 2
- PROPOSED ROOF PLAN 5 & 6
- HENEB
- MCC ECOLOGY COMMENT
- WYE VALLEY NATIONAL LANDSCAPE
- HISTORIC BUILDINGS AND PLACES
- COMMENTS - HIGHWAYS & FLOOD MANAGEMENT
- WELSH WATER COMMENT
- ONR'S CONSULTATION
- COMMENTS - NATS
- LETTER FROM APPLICANT
- GARDEN DESIGN
- POND DESIGN
- MASTER PLANTING PLAN
- HARD LANSCAPING
- BIODIVERSITY ENHANCEMENT STRATEGY
- POOL DESIGN INTENT
- DRAWING ISSUE SHEET
- PROPOSED SITE ROOF PLAN
- PROPOSED SITE LOCATION PLAN
- GREEN INFRASTRUCTURE STATEMENT
- SITE LOCATION PLAN EXISTING
- EXISTING SITE ROOF PLAN
- DESIGN AND ACCESS STATEMENT
- MOUNTON HERITAGE IMPACT
- MOUNTON HERITAGE IMPACT
- APPLICATIONFORMREDACTED
- PROPOSED GROUND FLOOR PLAN
- PROPOSED 1F PLAN
- PROPOSED ELEVATIONS 1
- PROPOSED SECTIONS 2
- PROPOSED DETAILS 1
- 2415 DRAWING ISSUE SHEET
- 2023FAST-TRACK-APPLICATION-FORM 3
- RT-MME-182195-03 REV A (BES)
- EXISTING SITE PLAN
- EXISTING SITE SECTION
- PROPOSED ELEVATIONS 2
- PROPOSED SECTIONS 1
- SITE LOCATION PLAN
- EXISTING GROUND FLOOR PLAN
- EXISTING 1F PLAN
- EXISTING ROOF PLAN
- EXISTING ELEVATIONS 1
- EXISTING ELEVATIONS 2
- EXISTING SECTIONS 1
- EXISTING SECTIONS 2
- PROPOSED ROOF PLAN
- PROPOSED DETAILS 2
- PROPOSED SITE PLAN
- PROPOSED SITE SECTION
- PROPOSED ELEVATIONS 3
- EXISTING ELEVATIONS 4
- EXISTING ELEVATIONS 5
- EXISTING ELEVATIONS 6
- EXISTING ELEVATIONS 7
- EXISTING ROOF PLAN UNIT 5 AND 6
- EXISTING ROOF PLAN UNIT 7 AND 8
- PROPOSED ELEVATIONS 4
- PROPOSED ELEVATIONS 5
- PROPOSED ELEVATIONS 6
- PROPOSED ELEVATIONS 7
- PROPOSED ROOF PLAN UNIT 5 AND 6
- PROPOSED ROOF PLAN UNIT 7 AND 8
- AMGD673-MOUNTONHOUSE-GARDENS-DESIGNSTATEMENT-1 OF 3
- AMGD673-MOUNTONHOUSE-GARDENS-DESIGNSTATEMENT-2 OF 3
- AMGD673-MOUNTONHOUSE-GARDENS-DESIGNSTATEMENT-3 OF 3
- MOUNTON HOUSE OUTBUILDINGS DESIGN AND ACCESS STATEMENT_1 OF 2
- MOUNTON HERITAGE IMPACT STATEMENT 2 OF 2
- RT-MME-182195-01 (PEA)
- RT-MME-182195-02 (PRA AND DUSKS) 1 OF 2
- RT-MME-182195-02 (PRA AND DUSKS) 2 OF 2
- RT-MME-182537-01 (GCN EDNA)
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Open the documentsWhat this grant of permission means
Monmouthshire granted permission on 2 April 2026, subject to any conditions on the decision notice. Work must normally begin within five years or the permission lapses. More in our guide to what happens after a planning decision.
About full applications
A full application seeks permission for a complete, detailed proposal in one go, with siting, design, access and landscaping all fixed at this stage. More in our guide to planning application types.
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Mounton House Unit 5-6 Chepstow Monmouthshire NP16 6DF
Re-reroofing outbuildings, partial demolition and internal alterations, and garden restoration, including a natural swimming pool. Including demolition of recent extension, removal of dormers, reinstating Welsh slate roof, restoration of Parterre Garden and Rose Garden to reflect Henry Avery Tipping's original vision.
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Mounton Hous Mounton Road Chepstow Monmouthshire NP16 6DF
Condition 03 Roof Materials The roof will be finished in Blue Grey Cwt-y-Bugail Celtic Grade 9mm Welsh Slate, laid in a random width, diminishing coursed pattern. Installation will be undertaken in accordance with Welsh Slate guidance for random diminishing course slating, ensuring the following: * Random widths and diminishing courses will be used, with slates positioned to achieve a consistent visual reduction across each roof slope. * Vertical joints will be staggered; no central alignment is required due to the use of random widths. * Slates will be graded by length, width, and thickness to ensure consistent coursing and visual finish. * Slates will be fixed using a traditional nail-hung fixing method. Condition 04 Rainwater Goods The proposed rainwater goods comprise Guttercrest Moulded Ogee 150 x 100 gutters and 100 x 100 Georgian square downpipes, finished in Heritage Black to match the wider estate. The system has been selected to provide a durable, traditional appearance appropriate to the listed building, to provide visual consistency with the surrounding structures. Condition 05 Timber Cladding The proposed timber cladding will be finished in Remmers Black (RAL 9004) to match the existing panelling on the estate Boards will be nominal 70mm wide, arranged in a gridded panel layout to match the existing with equal spacing and alignment to ensure a high-quality finish appropriate to the character of the building (See Drawing 2415 PC01). Fixings will comprise pairs of lost head (lost pin) nails in Grade 316 stainless steel, fixed at both ends of each timber board (to match existing). All fixings will be carefully set out to ensure uniform alignment and a discreet appearance, preserving the visual integrity of the cladding. Condition 06 ? Cart Shed Sliding Doors The proposed sliding doors will be Minima Sliding system finished in Jet Black Matt (RAL 9005). The system is specified with a 20mm minimal frame detail, designed to emphasise the original oa
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