# Differences Single Family The important differences in the Input are that Single Family has * roof\_type * house\_type while Sustainability for Apartments (to get optimal results) needs: * position * floors * back\_facade More features differences in the Input & Output are that Single Family has * sloped\_roof\_insulation * flat\_roof\_insulation while Apartments has only: * roof\_insulation More features differences only in the Input are that Single Family has * sloped\_roof\_filters * flat\_roof\_filters while Apartments has only: * roof\_filters Features removed from the Input & Output in Apartments * bedroom\_windows --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.altum.ai/english/sustainability/sustainability-api-v2-apartments/differences-single-family.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.