PPS 21 Sustainable Development in the Countryside·Page 23
Replacement Dwelling Criteria
Replacement dwellings in the countryside must meet five specific criteria including siting within established curtilage, appropriate sizing, high-quality design, available services, and safe road access.
In addition to the above, proposals for a replacement dwelling will only be permitted where all the following criteria are met:
• the proposed replacement dwelling should be sited within the established curtilage of the existing building, unless either (a) the curtilage is so restricted that it could not reasonably accommodate a modest sized dwelling, or (b) it can be shown that an alternative position nearby would result in demonstrable landscape, heritage, access or amenity benefits;
• the overall size of the new dwelling should allow it to integrate into the surrounding landscape and would not have a visual impact significantly greater than the existing building;
• the design of the replacement dwelling should be of a high quality appropriate to its rural setting and have regard to local distinctiveness;
• all necessary services are available or can be provided without significant adverse impact on the environment or character of the locality; and
• access to the public road will not prejudice road safety or significantly inconvenience the flow of traffic.
Source — /Users/richardhill/Documents/planning-arch-project/data/documents/regional/PPS 21 - Sustainable Development in the Countryside.pdf