I am trying to find out if nfpa has any minimum distance recommendations for spacing between trailers I a mobile home park
It wouldn't matter what any NFPA code says, because mobile home parks typically are zoned by the local jurisdiction which can require even stricter zoning laws. So I would say to check with your local permitting office, as they can even point you to the correct code, for that area.
It might matter in municipalities having no zoning code whatsoever, let alone regarding mobile home parks and their spacing. For instance, here in NH, state building and fire codes apply to "every structure" whether or not there is any local enforcement (building inspector) or zoning ordinance. NH Fire Code enacted NFPA 1 and nearly all of its cited references, including Chapter 27 pertaining to Manufactured Homes [and RV Sites], citing NFPA 501A.
In any case, NFPA 501A (2015)Fire Safety Criteria for Manufactured Home Installations, Sites, and Communities, states:
6.2.1 Fire Safety Separation Requirements.188.8.131.52 Fire separation distances shall comply with the jurisdiction’s adopted building code, local rules, or regulations. In their absence, NFPA 5000, Building Construction and Safety Code, shall apply.
So, as Nick Sasso said, you should ask the local zoning, building and fire officials what standards they want you to use.
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