14 July 2025 · Delegated - Principal Planner (Chris Balmer)
Rowena, Glen Chass Road, Glen Chass, Port St. Mary, Isle Of Man, IM9 5pn
The proposal at Rowena, Glen Chass Road, involves demolishing a small flat-roofed utility room (2.3m x 1.2m) and replacing it with a pitched-roof side extension (4.5m x 2.6m, 4.9m ridge height, 3.1m eaves) finished in painted render and dark grey slate, subordinate to the main roof.
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The officer assessed the proposal against Housing Policy 16, which permits extensions to non-traditional countryside dwellings only if they do not intensify visual impact or detract from the landscape…
Housing Policy 16
Permits extensions to non-traditional countryside dwellings only where they do not increase visual impact or detract from amenities of the countryside. Officer assessed the side extension and dormer as sensitively scaled, subordinate to main roof, matching materials, and contained by landscaping, not intensifying impact.
General Policy 2
Requires general development considerations including amenity impacts. Proposal tested for neighbour privacy, overlooking, overshadowing and overbearing effects; windows face public road/fields, north-side extension avoids sun path harm to Briarwood, complying with GP2(g).
Spatial Policy 5
Addresses design and visual impact. Dormer and extension respect local dormer precedents, roof hierarchy, subdued materials, preserving streetscape character and skyline rhythms without discord.
General Policy 3
Sets exceptions to countryside development. Existing dwelling allows householder extension; proposal does not detract from countryside amenities.
Environment Policy 1
Protects countryside and ecology. No harm to surrounding landscape due to integration within curtilage, visual containment by vegetation.
Time limit
The development hereby approved shall be begun before the expiration of four years from the date of this decision notice. Reason: To comply with Article 26 of the Town and Country Planning (Development Procedure) Order 2019 and to avoid the accumulation of unimplemented planning approvals.
Materials approval
Prior to commencement of the development hereby approved, details of all external finishes, including the manufacturer's details, specification and colour of all the materials to be used in the external finish for the approved development shall be submitted to and approved in writing by the Department. The development shall be carried out strictly in accordance with the approved details and retained as such thereafter. Reason: To ensure that the development is carried out to the highest standards of materials, in the interests of the appearance of the development and the visual amenities of the area.
support the application
no interest
