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It addresses how listed building consent is required, including the likely use of conditions that must be implemented, and clarifies the relationship between consent and planning permission for development. It also situates the note within the evolution of withdrawn national policy and describes principles for assessing impacts on special architectural and historic interest.",{"@graph":63,"@context":118},[64,80,101],{"@type":65,"itemListElement":66},"BreadcrumbList",[67,71,74,77],{"item":68,"name":69,"@type":70,"position":9},"https://docshare.wps.com","Home","ListItem",{"item":72,"name":10,"@type":70,"position":73},"https://docshare.wps.com/template/",2,{"item":75,"name":41,"@type":70,"position":76},"https://docshare.wps.com/template/letters/",3,{"item":78,"name":59,"@type":70,"position":79},"https://docshare.wps.com/template/ihbc-guidance-note-alterations-to-historic-buildings/162660/",4,{"url":78,"name":59,"@type":81,"image":82,"author":87,"headline":59,"publisher":90,"fileFormat":93,"inLanguage":57,"description":61,"dateModified":94,"datePublished":95,"encodingFormat":93,"isAccessibleForFree":96,"interactionStatistic":97},"DigitalDocument",{"url":83,"@type":84,"width":85,"height":86},"https://docshare.wps.com/thumbnails/ihbc-guidance-note-alterations-to-historic-buildings/162660.png","ImageObject",442,249,{"name":88,"@type":89},"Lucas Vance","Person",{"url":68,"name":91,"@type":92},"DocShare","Organization","application/vnd.openxmlformats-officedocument.wordprocessingml.document","2026-09-24","2026-08-30",true,{"@type":98,"interactionType":99,"userInteractionCount":76},"InteractionCounter",{"@type":100},"ViewAction",{"@type":102,"mainEntity":103},"FAQPage",[104,110,114],{"name":105,"@type":106,"acceptedAnswer":107},"Why does the Guidance Note emphasize preserving special architectural and historic interest?","Question",{"text":108,"@type":109},"It reflects the statutory requirement in the 1990 Act to give special regard to preserving a listed building and any features of special architectural or historic interest. Change is not automatically ruled out, but it must be well informed and fully justified.","Answer",{"name":111,"@type":106,"acceptedAnswer":112},"Are alterations to listed buildings always covered by listed building consent?",{"text":113,"@type":109},"Alterations require listed building consent. Consent decisions may also include conditions, which must be implemented in full.",{"name":115,"@type":106,"acceptedAnswer":116},"How does this guidance relate to planning permission for development?",{"text":117,"@type":109},"Planning permission for “development” may be required under planning legislation where necessary, but it is not guaranteed in every circumstance. Practitioners must determine the correct position in each case.","https://schema.org",{"og:url":78,"og:type":120,"og:title":59,"og:site_name":91,"og:description":61},"article",{"robots":122,"canonical":78},"index,follow",{"doc_id":124,"site_id":56},162660,1788128201,{"code":4,"msg":5,"data":127},{"doc_id":124,"user_id":128,"nickname":88,"user_avatar":129,"doc_module":9,"category_id":40,"category_name":41,"doc_title":59,"doc_description":61,"doc_content":130,"file_id":131,"file_url":132,"file_type":133,"file_size":134,"view_count":76,"is_deleted":4,"is_public":9,"is_downloadable":9,"audit_status":9,"page_count":135,"language":136,"language_code":57,"site_id":56,"html_lang":57,"table_of_contents":137,"faqs":138,"seo_title":139,"seo_description":61,"update_tm":125,"read_time":15},549768064622,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","IHBC Guidance Note –\nAlterations to Historic Buildings\nAn IHBC Guidance Note: GN 2018/x, Nov 2018\nThis one of a series of occasional IHBC Guidance Notes published by the Institute of Historic Building Conservation (IHBC). IHBC Guidance Notes offer advice on topics that we consider crucial to the promotion of good built and historic environment conservation policy and practice.\nThe IHBC welcomes feedback, comment and updates on our Guidance Notes to our consultant editor Bob Kindred, at \u0013 HYPERLINK \"mailto:research@ihbc.org.uk\" \u0014research@ihbc.org.uk\u0015\nADVICE ON ALTERATIONS TO LISTED BUILDINGS\nForeward\nThe Guidance Note has been produced in response to widespread concern by IHBC members about the current absence of detailed advice regarding the appropriate alteration of historic buildings within the framework of the Planning (Listed Buildings and Conservation Areas) Act 1990.  This requires inter alia special regard to the desirability of preserving a listed building and any features of special architectural or historic interest, which it possesses.  This does not necessarily preclude change although this must be well informed and fully justified. Inappropriate or ill considered alterations should not be permitted.\nThe advice in the Guidance Note does not obviate the need for planning permission for ‘development’ under planning legislation where necessary but both may not be required under all circumstances and practitioners need to satisfy themselves of the correct position in each case.\nThe government withdrew its national policy guidance - PPG15 (1994) in 2010 and with it Annex C – Guidance on the Alteration of Listed Buildings [which also dealt with appropriate forms of repair [1]. Historic Scotland similarly withdrew its parallel Memorandum of Guidance (1996) Appendix 1 - Guidance for the Detailed Consideration of Listed Building and Conservation Area Consent Cases, which was subsequently reorganised.\nIt is the view of a number of experienced IHBC practitioners and others that in a number of respects the more generic guidance that replaced both documents is not adequately clear and fails to provide the level of detail that practicing heritage professionals consider is essential for proper day-to-day heritage management.\nThe evolution and continued relevance of the detailed advice withdrawn by central government is set out in more detail in Appendix 1 to this Note.\nThe clear principles and detailed advice on the everyday alterations to listed buildings set out in Annex C and the Memorandum had evolved over several decades and is generally considered to have stood the test of time. They continue to have relevance and practical application in the work of local planning authorities and the Planning Inspectorate, and can still meaningfully inform proposals by users of the planning system. Nevertheless, in the absence of current guidance with the imprimatur of the government, the Institute considers it entirely proper that such advice should continue to be available for the correct approach to many recurring heritage issues of alteration.\nThe Institute is aware of variations between some practitioners in local authorities and those in private practice regarding the interpretation of the current generic guidance on alterations to listed buildings, and also inconsistencies of interpretation from one local authority area to another.\nAdvice in PPG15 Annex C and the Historic Scotland Appendix 1 did not attempt to anticipate every eventuality, every type of building or form of alteration, or the use or replacement of every kind of building material.  It is recognised that the application of guidance should not be proscriptive and must sit comfortably and appropriately with the physical evidence and acknowledge regional variations in construction and local distinctiveness and respect local traditional practices.\nNotwithstanding the comprehensiveness and evolution of guidance between 1987 and 1994 [2] thematic issues continue to emerge (s","cbCaiiZ7pmPmdgaW","https://ap.wps.com/l/cbCaiiZ7pmPmdgaW","docx",285020,35,"English","# ALTERATIONS TO LISTED BUILDINGS - GENERAL PRINCIPLES\n## Scope of the guidelines\n## Special architectural and historic interest\n## Relationship to consent and planning permission","[{\"question\":\"Why does the Guidance Note emphasize preserving special architectural and historic interest?\",\"answer\":\"It reflects the statutory requirement in the 1990 Act to give special regard to preserving a listed building and any features of special architectural or historic interest. Change is not automatically ruled out, but it must be well informed and fully justified.\"},{\"question\":\"Are alterations to listed buildings always covered by listed building consent?\",\"answer\":\"Alterations require listed building consent. Consent decisions may also include conditions, which must be implemented in full.\"},{\"question\":\"How does this guidance relate to planning permission for development?\",\"answer\":\"Planning permission for “development” may be required under planning legislation where necessary, but it is not guaranteed in every circumstance. Practitioners must determine the correct position in each case.\"}]","IHBC Guidance Note - Alterations to Historic Buildings | DOCX"]