8 January 2026 · Head of Development Management (Stephen Butler)
36, Carrick Park, Sulby, Isle Of Man, IM7 2ey
The proposal involves demolishing a flat-roofed conservatory (3.3m x 7.4m) at the rear of a single-storey detached bungalow and replacing it with a larger pitched-roof extension measuring 4.5m projection, 8.5m length, and 38.25sqm floor area, with ridge height matching the main dwelling at 5.1m and eaves at 2.3m.
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The officer assessed that the rear extension is a proportionate addition within the established residential curtilage of a bungalow in a zoned residential estate, making efficient use of serviced land…
Strategic Policy 1
Requires efficient use of land and resources; officer found the extension makes efficient use of serviced land within existing residential curtilage and settlement without intensification.
Strategic Policy 2 - Priority for new development to identified towns and villages
Focuses development in existing towns/villages; site in zoned residential estate in Sulby, extension accords by remaining within curtilage.
Spatial Policy 5
Addresses design and visual impact; pitched roof extension with matching materials and subordinate rear position respects host dwelling and estate, screened from streetscene.
General Policy 2
Covers development control criteria including design (b,c), amenity (g), highways/parking (h,i), flood risk (l); proposal complies across all tested aspects with conditions for materials, flue, flood measures.
Environment Policy 10 - Development and flood risk
Development and flood risk; minimal flood water displacement, conditioned resilience measures reduce residual risk in fluvial/surface water prone area.
Environment Policy 13 - Development and flood risk
Development and flood risk; FRA mitigations (barriers, finishes, electrics) implemented via condition, supported by DOI consultee.
Environment Policy 42 - character and need to adhere to local distinctiveness
Character and local distinctiveness; materials and form align with bungalow estate, do not erode low-rise verdant character.
Transport Policy 7
Parking provisions; five spaces retained, no access changes, no Highway Services concerns.
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
All external materials and features, including roof tiles, render and dash finish, timber cladding, roof lights, and sun pipes, shall match those specified on Drawing No. 25 1934/04 and supporting documents, and shall be retained as such thereafter. Reason: To ensure a high standard of design and safeguard the character of the area in accordance with Strategic Policy 5 and General Policy 2(b, c).
Flue detailing
The flue shall be finished in a dark, non-reflective material and shall not exceed 700 mm above the roof ridge as shown on Drawing No. 25 1934/04, and shall be retained as such thereafter. Reason: To minimise visual impact and ensure the development respects the site and surroundings in accordance with Strategic Policy 5 and General Policy 2(b, c).
Flood mitigation measures
The flood mitigation measures set out in the submitted Flood Risk Assessment, including the installation of proprietary flood barriers to all external doors, water-resistant ground floor finishes, robust internal wall finishes, and the raising of electrical fittings above predicted flood levels, shall be implemented prior to first occupation of the extension and thereafter retained. Reason: To reduce residual flood risk in accordance with General Policy 2(l) and Environment Policies 10 and 13.
Do not oppose subject to condition requiring mitigations in the Flood Risk Assessment (property in fluvial flood zone, replacing similar sized structure)
Department of Infrastructure (DOI) Flood Risk Management Division issued a DNOC (Do not oppose subject to condition(s)) due to the property being within a fluvial flood zone, recommending that mitigations from the Flood Risk Assessment be conditioned.
Key concern: property is within a fluvial flood zone
Department of Infrastructure (DOI) Flood Risk Management Division
Conditional No ObjectionDNOC; The property is within a fluvial flood zone. The Application is to change the existing structure with a similar sized structure; Conditions: Recommend that the mitigations in the Flood Risk Assessment are conditioned to the application if it is approved
Conditions requested: Recommend that the mitigations in the Flood Risk Assessment are conditioned to the application if it is approved
