[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-663475-105":59,"doc-detail-663475-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","annex-a-residential-extensions-and-alterations-annex-a","Annex A - Residential Extensions and Alterations - Annex A","","Annex A provides detailed guidance for residential extensions and alterations, aiming to support consistent planning assessment. It explains how homeowners can design proposals that are sympathetic to the original dwelling and respectful of the surrounding area’s character and appearance. The annex emphasizes functional and visual integration, appropriate scale and proportion, urban massing control, and careful front-facing treatment. It also covers boundary and neighbour-right considerations and the siting and design of garages and outbuildings.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/annex-a-residential-extensions-and-alterations-annex-a/663475/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/annex-a-residential-extensions-and-alterations-annex-a/663475.png","ImageObject",300,407,{"name":92,"@type":93},"cimolpedes","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":81},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is the purpose of Annex A for residential extensions and alterations?","Question",{"text":112,"@type":113},"Annex A sets out detailed guidance so planning applications for extensions and/or alterations can be considered on a consistent basis. It helps homeowners propose work that supports good design and avoids unnecessary delays.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What design principles should be followed to make an extension more likely to be granted?",{"text":117,"@type":113},"Design should integrate the extension functionally and visually with the existing property, maintain symmetry of proportion and balance, and complement the host building and its setting. The guidance also stresses avoiding inappropriate size or prominence.",{"name":119,"@type":110,"acceptedAnswer":120},"How does the annex address neighbour and boundary issues?",{"text":121,"@type":113},"Extensions or alterations should not infringe on a neighbour’s property. Where foundations, gutters, overhangs, attachments, or close boundary placement are involved, permission to enter neighbouring land may be required, and discussing proposals in advance is advised.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},663475,1793228358,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":81,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":129,"read_time":144},962094243610,"https://ap-avatar.wpscdn.com/davatar_3d24733baf745e90a7e4bdd5f77d97b2","Annex A: Guidance for Residential Extensions and  \nAlterations  \nA1 The purpose of this Annex is to set out the Department’s detailed guidance to provide a consistent basis against which to consider an extension and/or alteration to a dwelling house or flat, including those in multiple occupancy and any proposal for a domestic garage or an outbuilding.  \nA2 The guidance is intended to advise home owners on how to extend or alter their property in a neighbourly manner that is sympathetic with the original property, respects the character and appearance of the surrounding area and contributes towards a quality environment. It should also be noted that a well-designed extension or alteration can enhance and add value to a property, while a poorly designed extension or alteration can make it difficult to sell.  \nA3 Although the guidance may not cover all the site specific issues that can arise it covers the main considerations that will be taken into account when determining a planning application. If it is followed, an extension or alteration is more likely to be granted planning permission, and unnecessary delays in processing applications avoided.  \nContext and Design  \nA4 An extension or alteration to a residential property should be designed to become an integral part of the property both functionally and visually. Such works should not be designed in isolation solely to fit in a required amount of accommodation. Proposals that are badly sited or designed, or that are incompatible with their surroundings, can lead to an undesirable change in the character of the existing property and the area in which they are located. Success depends upon striking the right balance between adaptation and sensitivity to the original design.  \nA5 The overall aim is to encourage high quality design solutions irrespective of whether the approach followed seeks to mirror the style of the existing property or adopts a contemporary modern design approach. To ensure good design any extension or alteration will need to complement the host building and respect its location and wider setting.  \nA6 An extension or alteration should not be so large or so prominent as to dominate the host property or its wider surroundings, rather development proposals should be in scale with existing and adjoining buildings. All such works should have proportion and balance, fitting in with the shape of the existing property. The height, width and general size of an extension should generally be smaller than the existing house and subordinate or integrated so as not to dominate the character of the existing property, although it is accepted that on occasion a larger extension may be required-for example to facilitate the renovation and upgrading of a small rural dwelling to meet modern amenity standards. It will not usually be appropriate to allow an extension to project above the ridge line of the existing dwelling and this will be especially important where uniform building height is part of the street scene.  \nA7 Proposals in an urban context should not overdevelop the site in terms of massing, plot size and proximity to boundaries thereby, for example, creating a visual ‘terrace’ effect. This is one of a number of problems associated with side extensions, where they can alter the character of the area by filling the visual gaps between residential properties. The need for adequate space along side boundaries is also important to provide ease of access to the rear of the property and to allow for maintenance. This will also serve to eliminate the possibility of any part of the extension, including rainwater goods, overhanging neighbouring property.  \nA8 A further concern may arise where a side extension to a semi-detached dwelling is proposed at the same height and follows the same building line as the block comprising an original pair of dwellings. This will often compromise the appearance and architectural integrity of the block, and if repeated throughout a neighbo","cbCaivzkocXob7dB","https://ap.wps.com/l/cbCaivzkocXob7dB","pdf",164421,11,"English","# The purpose of Annex A\n# Context and Design\n## Overall design integration and quality\n## Scale, prominence, and height limits\n## Urban context and side extension impacts\n## Set back and set down in certain cases\n## Front elevation design considerations\n## Neighbour property rights and boundaries\n# Garages and other associated outbuildings","[{\"question\":\"What is the purpose of Annex A for residential extensions and alterations?\",\"answer\":\"Annex A sets out detailed guidance so planning applications for extensions and/or alterations can be considered on a consistent basis. It helps homeowners propose work that supports good design and avoids unnecessary delays.\"},{\"question\":\"What design principles should be followed to make an extension more likely to be granted?\",\"answer\":\"Design should integrate the extension functionally and visually with the existing property, maintain symmetry of proportion and balance, and complement the host building and its setting. The guidance also stresses avoiding inappropriate size or prominence.\"},{\"question\":\"How does the annex address neighbour and boundary issues?\",\"answer\":\"Extensions or alterations should not infringe on a neighbour’s property. Where foundations, gutters, overhangs, attachments, or close boundary placement are involved, permission to enter neighbouring land may be required, and discussing proposals in advance is advised.\"}]","Annex A - Residential Extensions and Alterations - Annex A | PDF",28]