A scheme to convert the basement of a Grade-II-listed former pub in a Pembrokeshire town’s conservation area to a flat has been refused by planners who said it would create an “oppressive living environment”.

In the application to Pembrokeshire County Council, Toyeb Ali Rahman, through agent Hayston Developments & Planning Ltd, sought permission to convert the basement of the former Kings Arms Hotel, Dew Street, Haverfordwest, the building most recently used as an Indian takeaway, to a residential flat.

A supporting statement said: “The Kings Arms Public House was a public house and was formerly a coaching house with a range of former stables to the rear which have been converted to dwellings. It is a mid-terrace property fronting the western side of Dew Street close to the town centre of Haverfordwest,” adding: “Since closure the public house has been used as a takeaway restaurant and is a mixture of flats and offices.”

It went on to say: “The application proposal only involves a small-scale conversion of a basement storage area associated with the former Kings Arms Hotel to a one bedroom residential flat. There would be no extensions with the only external alteration to the building being the replacement of a poorly detailed metal roller shutter door with conventional domestic entrance door with sidelight.

“As such, there would be no change to the impact of the building or proposal on the locality. In fact, basement area is not at all visible from the street scene along Dew Street.”

However, the scheme was refused by county planners on three points.

“The proposed change of use would result in a self-contained residential unit that fails to provide an acceptable standard of residential amenity for future occupiers. The habitable accommodation would be served by no external windows, resulting in inadequate levels of natural daylight and outlook and creating a poor-quality and oppressive living environment.

“Furthermore, insufficient information has been submitted to demonstrate that adequate ventilation, air quality, and moisture control could be achieved without harm to the character and appearance of the listed building.”

Planners also said the proposals would, through its design and use of materials, “fail to respect the special architectural and historic interest of the listed building”.

The final reason for refusal was the scheme would “result in an increase in nitrogen discharges draining into the Milford Haven Inner waterbody of the Pembrokeshire Marine Special Area of Conservation (SAC) where features are known to be in unfavourable condition due to current evidence of both chemical and biological failure,” with insufficient information to demonstrate mitigation measures which would allow the proposed development to achieve nutrient neutrality.