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Statement to accompany the Planning application
This Planning Statement has been prepared in support of a full planning application for the erection of a detached double garage incorporating loft storage and a hobby room within the curtilage of Brae Villa, Tromode Road, Douglas.
The proposal seeks consent for a modest domestic outbuilding designed to provide secure covered parking, ancillary storage and flexible hobby space associated with the main dwelling. The structure has been carefully positioned and proportioned to remain subordinate to the host property and to sit comfortably within the established residential setting.
The proposal represents a logical and proportionate enhancement to the existing property and has been developed with full regard to the Isle of Man Strategic Plan 2016, the Area Plan for the East, the Residential Design Guide 2021, and the site’s relevant planning history.
Brae Villa is a detached residential dwelling situated on Tromode Road within an established residential area designated as Predominantly Residential under the Area Plan for the East.
The surrounding locality is characterised by a mixture of detached and semidetached dwellings set within mature plots, with a varied architectural character and no single dominant design style.
The properties along this section of Tromode Road benefit from established boundary treatments, areas of hardstanding for parking, and a combination of formal garden areas and peripheral vegetation.
The application site comprises the residential curtilage associated with Brae Villa, including driveway access and an area of scrub and hardstanding located to the side and rear of the dwelling.
The part of the site proposed for development is visually and functionally associated with the existing driveway rather than forming part of the principal garden space serving the dwelling. It is detached from the core amenity area and offers limited privacy or recreational value in its current form.
The proposal therefore sits within an established domestic context where ancillary outbuildings are a typical and expected feature of residential plots.
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
The application seeks permission for the erection of a detached two-storey double garage within the curtilage of Brae Villa. The ground floor will provide secure covered parking and associated domestic storage space, with the upper floor accommodating a flexible hobby room / home office area served by stair access from the side of the garage.
The building has been designed to remain subordinate to the principal dwelling in terms of scale, height and footprint. The footprint measures approximately 8.7 metres by 6.6 metres and the ridge height remains lower than that of the main dwelling, ensuring that it reads as a secondary structure within the site.
Externally, the materials have been selected to complement the host property. The roof will be finished in slate to match the main dwelling, with rendered external walls painted white. Fascias and soffits will be Anthracite Grey PVC trim, and windows will comprise Anthracite Grey uPVC frames. The garage door will be anthracite grey sectional up-and-over style, with a matching anthracite grey composite entrance door. Rainwater goods will be black PVC. The overall material palette reflects conventional residential finishes consistent with the surrounding built form.
The siting of the structure utilises an area currently associated with hardstanding and driveway space, ensuring that the principal garden area remains unaffected.
The site has an extensive planning history, of which the following are materially relevant:
PA 09/00163/B – Erection of Dwelling with Garage (Approved)
Under PA 09/00163/B, planning permission was granted for the erection of a dwelling with associated garage within what was formerly part of the original curtilage serving Brae Villa.
That development resulted in a significant subdivision of the plot and a corresponding reduction in the amenity space available to the remaining dwelling. In assessing the application, the Officer acknowledged the reduction in garden area but concluded that the remaining amenity provision would not reduce the residential environment of Brae Villa to an unacceptable level.
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
This decision is material to the current proposal, as it establishes that a proportionate reduction in garden space can be acceptable in principle where functional and usable amenity space remains available to serve the dwelling.
PA 14/00782/B – Detached Garage with Accommodation Over (Refused, Allowed at Appeal) In 2014, PA 14/00782/B sought permission for a detached garage with accommodation over, positioned within a broadly comparable area of the curtilage to the current proposal. Although the application was initially refused, the decision was overturned on appeal. The Inspector concluded that, notwithstanding concerns raised regarding potential independent occupation and visual impact, the structure was acceptable in terms of scale, design and relationship to its surroundings.
The Inspector concluded that the structure was acceptable in terms of scale, design and relationship to its surroundings, and that the risk of unacceptable planning harm was insufficient to justify refusal.
The appeal decision carries substantial material weight and confirms that a detached ancillary structure of comparable scale can be accommodated on the site without unacceptable impact on character or neighbouring amenity.
PA 23/00364/B – Detached Garage and Annex (Refused)
More recently, PA 23/00364/B proposed a detached garage with annex accommodation above. This application was refused, with the reasons for refusal centring primarily on concerns regarding visual overdevelopment, proximity to trees, character impact and the relationship to neighbouring properties.
It is material that statutory consultees, including Highway Services, did not object to the proposal. The refusal was therefore largely based on character and amenity interpretation rather than technical constraints.
The current proposal differs materially from the 2023 scheme in that it is clearly defined as incidental to the main dwelling, avoids any perception of independent occupation, and has been refined in scale and presentation to respond to the character and amenity concerns previously identified.
When considered in the context of the earlier appeal decision, the planning history demonstrates that the principle of a detached garage structure within this curtilage
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
has been thoroughly examined and, at appeal, found to be acceptable in planning terms.
The application site lies within an area designated as Predominantly Residential under the Area Plan for the East and therefore falls to be assessed primarily against the Isle of Man Strategic Plan 2016 and relevant development management policies.
In such locations, domestic development within established residential curtilage is acceptable in principle, subject to detailed consideration of siting, design, amenity and highway matters. The proposal is therefore assessed principally against General Policy 2, which sets out the overarching development control criteria relating to design quality, relationship to surroundings, impact on neighbouring amenity, environmental considerations and highway safety.
Strategic Policy 3 is also relevant, requiring that development demonstrates good design and contributes positively to the built environment, while Environment Policy 42 ensures that development is sympathetic to the character and identity of its locality.
Transport Policy 7 addresses parking standards and highway implications. In addition, the Residential Design Guide 2021 provides supplementary guidance in respect of scale, neighbour relationships, amenity provision and contextual design.
The proposal has been prepared and assessed against these policy and guidance documents in full, together with the material weight afforded to previous planning decisions and appeal findings relating to the site.
Assessment Against Strategic Plan Policies General Policy 2 – Development Control
General Policy 2 requires that development accords with land-use zoning and respects the site and its surroundings in terms of siting, layout, scale, form, design and landscaping. The application site lies within an area designated as Predominantly Residential, and the principle of domestic outbuildings within residential curtilage is well established. The proposal is clearly ancillary to the main dwelling and remains proportionate in scale and function to the established
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
residential use of the site. In land-use terms, therefore, the development aligns with the zoning objectives of the Area Plan for the East.
In assessing the proposal against the detailed criteria of General Policy 2, it is evident that the building has been carefully positioned within an existing area of hardstanding and low-value scrub to ensure that it remains subordinate to the host dwelling. The scale of the garage is proportionate to the size of the plot and clearly secondary in height and visual presence when read alongside the principal dwelling. The building does not project forward of the established building line in a manner that would disrupt the street scene, nor does it occupy the principal garden space associated with the property.
In terms of character and townscape impact, the proposal does not introduce a form of development that is alien to residential environments. Detached garages and ancillary outbuildings are commonplace within suburban plots, and the proposed structure reads as a functional domestic building rather than a separate dwelling or dominant built form. The relationship with neighbouring properties has been carefully considered to ensure that there is no unacceptable overlooking, overshadowing, or overbearing effect. Separation distances remain reasonable, and windows are not positioned in a manner that would materially harm neighbouring privacy.
General Policy 2 also requires that development does not adversely affect highway safety or parking provision. The proposal improves on-site parking capacity through the provision of a double garage, while retaining additional driveway space within the curtilage. Comparable proposals at the site have previously attracted no objection from Highway Services, and there is no evidence to suggest that the development would give rise to traffic or parking pressures. In overall terms, the proposal satisfies the requirements of General Policy 2.
Strategic Policy 3 seeks to ensure that new development contributes positively to the Island’s built environment and respects local character, materials and identity. The proposal has been designed as a modest domestic outbuilding, with proportions and massing that reflect its ancillary function. It does not attempt to replicate historic architectural detailing artificially, nor does it introduce an exaggerated contemporary statement. Instead, the building adopts a restrained and functional domestic form appropriate to its use as a garage and storage space.
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
The surrounding area is characterised by a variety of architectural styles, materials and roof forms. There is no single unifying design language along this section of Tromode Road. In this context, the proposal does not disrupt an established architectural pattern. The building remains visually subordinate to the main dwelling and is read within the context of a residential curtilage rather than as a stand-alone structure competing for visual dominance. Its scale and footprint are comparable to that previously considered acceptable at appeal in 2014, which is a material consideration in assessing its design impact.
Accordingly, the proposal is considered to meet the objectives of Strategic Policy 3 by providing a proportionate and contextually aware form of development.
Environment Policy 42 requires that development be sympathetic to the character and identity of its locality. The immediate context of Brae Villa comprises detached and semi-detached dwellings set within mature plots. Outbuildings, garages and ancillary structures are a typical feature of such residential environments. The proposed development does not introduce an alien land use or urbanise an undeveloped area of countryside; rather, it represents a modest intensification within an established residential curtilage.
The scale and footprint of the building are consistent with a domestic garage, and the design does not seek to create an additional focal building within the plot. The principal open and usable garden space remains available to the dwelling, and the building does not dominate the site when viewed from neighbouring land. Given the varied architectural character of the surrounding area, it cannot reasonably be concluded that the proposal would undermine local identity or erode the townscape. In this respect, the development is compliant with Environment Policy 42.
Transport Policy 7 requires that development provides appropriate parking provision in accordance with current standards. The proposal enhances the parking arrangements at the property through the introduction of a double garage, ensuring secure and weather-protected parking within the curtilage. Adequate driveway space remains available for additional vehicles. The development does not reduce existing parking capacity and does not generate additional traffic beyond that associated with normal domestic use.
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
Previous consultations in relation to comparable proposals at this site confirmed that no significant negative impact on highway safety or network functionality would arise. There is no material change in circumstances that would lead to a different conclusion in this case. The proposal therefore complies with Transport Policy 7.
Previous planning assessments at this site have raised concerns regarding reductions in amenity space, and it is therefore appropriate to address this matter directly. The proposed garage occupies an area of the curtilage that is presently of limited functional and recreational value, being visually and physically associated with the driveway and areas of scrub rather than forming part of the principal garden space serving the dwelling.
This part of the site lacks meaningful privacy and is detached from the core outdoor amenity area enjoyed by the occupants of Brae Villa. Importantly, the main garden area to the west and south of the dwelling remains unaffected and continues to provide adequate and usable private amenity space consistent with the expectations for a property of this size and location.
It is also material that a significantly greater reduction in amenity space was previously accepted under PA 09/00163/B, where it was concluded that the remaining space would not reduce the residential environment of Brae Villa to an unacceptable level.
In comparison, the current proposal results in a far more limited and proportionate use of curtilage, retaining functional and attractive garden space. Accordingly, the development does not give rise to an unacceptable loss of amenity provision and remains consistent with the objectives of General Policy 2 and the Residential Design Guide.
The proposed building has a footprint of approximately 8.7 metres by 6.6 metres, which is consistent with the dimensions typically associated with a functional double garage and comparable to structures previously considered on the site.
The overall height remains clearly subordinate to the main dwelling and does not exceed the established ridge height of the principal house. In visual terms, the
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
building reads as a secondary structure within the curtilage rather than as a competing focal point.
The siting ensures that appropriate separation distances are maintained from neighbouring properties, thereby preventing any sense of overbearing enclosure or undue dominance. When assessed against the scale of the plot and the existing built form within the locality, the proposal cannot reasonably be characterised as overdevelopment. It represents a proportionate and logical domestic addition that respects the established hierarchy of structures on the site and accords with the scale and intensity of development previously considered acceptable, including the 2014 appeal decision.
The proposed detached double garage with loft storage and hobby room represents a modest and proportionate form of domestic development within an established residential curtilage. The proposal lies within a Predominantly Residential designation and is clearly subordinate to the host dwelling and proportionate to the established pattern of development within the curtilage.
Adequate and functional amenity space is retained, and the building is positioned within an area of limited amenity value that is visually associated with existing hardstanding.
The scale, massing and design of the structure ensure that it remains subordinate to the principal dwelling and does not adversely affect the character of the locality or the residential amenity of neighbouring properties.
On-site parking provision is enhanced and no highway safety concerns arise. Having regard to the Isle of Man Strategic Plan 2016, the Residential Design Guide 2021, the established planning history of the site, and the material weight afforded to previous appeal decisions, the proposal is policy-compliant and represents an appropriate and sustainable form of residential development.
For the reasons set out above, the proposal represents appropriate development and approval is respectfully requested.
AH Grace Ltd 32 Cronk Avenue, Onchan, Isle of Man, IM3 3DF
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