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It covers general plan requirements by project type, including new construction, additions, alterations/tenant improvements, and changes of occupancy or use. The guide also summarizes Washington State guidelines for when architect-stamped and engineer-stamped designs are required, plus additional sealed documents such as sprinkler, fire suppression, engineered plumbing, and hazardous materials reporting.",{"@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/mep-plan-requirements-for-commercial-permitting-rev20250709/662876/",{"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/mep-plan-requirements-for-commercial-permitting-rev20250709/662876.png","ImageObject",300,407,{"name":92,"@type":93},"Fans","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-30","2026-10-28",true,{"@type":102,"interactionType":103,"userInteractionCount":14},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What is required for a new construction MEP plan submittal?","Question",{"text":112,"@type":113},"A complete MEP plan submittal is required, outlining all components of the MEP design and installation.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"What is the minimum requirement for additions and alterations/t​enant improvements?",{"text":117,"@type":113},"At a minimum, a MEP scoping plan is required to identify the parameters of the MEP work.",{"name":119,"@type":110,"acceptedAnswer":120},"When are engineer-stamped plans required under Washington State guidelines?",{"text":121,"@type":113},"Engineer-stamped design drawings are required when the building includes a significant structure as defined in RCW 18.43.020(12), and for specific electrical plan categories described in the guide.","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},662876,1793222895,{"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":14,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":81,"language":139,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":67,"update_tm":129,"read_time":39},5909892330395,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","Mechanical Electrical Plumbing (MEP) Plan Requirements for Commercial Permitting  \nRev.20250709  \nThis guide outlines submittal requirements and regulatory considerations for projects involving MEP systems, in accordance with City and Washington State guidelines.  \nPlease review the EDR Electronic File Standards for document parameters and naming conventions.  \nHave Questions? Permit Team Hotline: (509) [625-6999 or email:](625-6999 or email: PermitTeam@SpokaneCity.org)[ ](625-6999 or email: PermitTeam@SpokaneCity.org)[PermitTeam@SpokaneCity.org](625-6999 or email: PermitTeam@SpokaneCity.org)  \n\n| GENERAL PLAN REQUIREMENTS BY PROJECT TYPE |  |\n| --- | --- |\n| SCOPE | DETAILS |\n| NEW CONSTRUCTION | A complete MEP plan submittal is required that outlines all components of the MEP design and installation. |\n| ADDITIONS | The required MEP plan set is dependent on the size and complexity of the building addition and whether the addition includes MEP installations.\u003Cbr>1. At a minimum a MEP scoping plan is required to identify the parameters of the MEP work.\u003Cbr>2. Where an addition includes installation of new MEP systems, a complete MEP plan submittal is required that outlines all components of the MEP design and installation. |\n| ALTERATIONS/TENANT IMPROVEMENTS | The required MEP plan set is dependent on the scope and complexity of the building alteration and whether the alteration includes MEP installations/alterations and the scope of said installations/alterations.\u003Cbr>1. At a minimum a MEP scoping plan is required to identify the parameters of the MEP work.\u003Cbr>2. Where an alteration includes installation of new MEP systems, a complete MEP plan submittal is required that outlines all components of the MEP design and installation. |\n| CHANGE OF\u003Cbr>OCCUPANCY/USE | The required MEP plan set is dependent on the specific occupancies involved in the change of occupancy or use. Requirements for minimum compliance are outlined in the Change of Use plan submittal requirements on the DSC Website.\u003Cbr>Additionally, if a building alteration is included as a component of the change of occupancy/use, the required MEP plan set is dependent on the scope and complexity of the building alteration and whether the alteration includes MEP installations.\u003Cbr>1. At a minimum a MEP scoping plan is required to identify the parameters of the MEP work.\u003Cbr>2. See Alterations/Tenant Improvements section above for MEP plan requirements if the change of use includes a building alteration. |\n\nDevelopment Services Center | 808 West Spokane Falls Boulevard, Spokane, WA 99201-3336  \n[my.spokanecity.org](my.spokanecity.org | Phone:)[ | Phone:](my.spokanecity.org | Phone:) [509.625.6300 | PermitTeam@spokanecity.org](509.625.6300 | PermitTeam@spokanecity.org)  \nPage 1  \n2 MEP Plan Requirements for Commercial Permitting Continued  \n\n| WASHINGTON STATE GUIDELINES |  |\n| --- | --- |\n| SCOPE | DETAILS |\n|  | Depending on the size of the building and the complexity of the project, plan design may be performed by building owners, licensed contractors, non-licensed designers, architects, or engineers. |\n| ARCHITECTSTAMPED DESIGNS | An architect is required to design and stamp design drawings/documents per ( RCW 18.08.410) .\u003Cbr>1. When an architect’s stamp is required on design drawings, we generally require that MEP plans also be designed/reviewed and stamped by a licensed professional. This could be a licensed contractor, architect, or engineer. |\n| ENGINEER\u003Cbr>STAMPED DESIGNS | Washington State does not have a specific threshold that dictates when an engineer is required to design or stamp plans (exceptions follow) . The decision on whether an engineered design is necessary is made by the design professional or the authority having jurisdiction, based on the complexity of the design and installation.\u003Cbr>1. An engineer is required to design and stamp design drawings if the building is/includes a significant structure as defined in RCW 18.43.020(12)\u003Cbr>2. Electrical Plans: Th","cbCaifbKzXOkiU9B","https://ap.wps.com/l/cbCaifbKzXOkiU9B","pdf",174010,"English","# General Plan Requirements by Project Type\n## New Construction\n## Additions\n## Alterations/Tenant Improvements\n## Change of Occupancy/Use\n# Washington State Guidelines\n## Architect-Stamped Designs\n## Engineer-Stamped Designs\n## Plans Examiner Discretion","[{\"question\":\"What is required for a new construction MEP plan submittal?\",\"answer\":\"A complete MEP plan submittal is required, outlining all components of the MEP design and installation.\"},{\"question\":\"What is the minimum requirement for additions and alterations/t​enant improvements?\",\"answer\":\"At a minimum, a MEP scoping plan is required to identify the parameters of the MEP work.\"},{\"question\":\"When are engineer-stamped plans required under Washington State guidelines?\",\"answer\":\"Engineer-stamped design drawings are required when the building includes a significant structure as defined in RCW 18.43.020(12), and for specific electrical plan categories described in the guide.\"}]","MEP Plan Requirements for Commercial Permitting - Rev.20250709 | PDF"]