Conditions and access
A nineteenth-century in-town Franklin house can hide a century of prior repairs behind its walls; a newer Spring Hill-area subdivision home rarely does, but tight access or mature landscaping can still change labor and sequencing either way.
Scope and materials
Spell out where repair work ends, what capacity the replacement system needs to carry, which materials suit the house, and how disposal, testing, and restoration are handled.
Permits and specialist input
Work near a historic district or the Harpeth River floodplain can call for a city permit, a Historic Zoning Commission review, or an engineering opinion. Confirm requirements with the city and your provider first.
Educational planning only
Nothing here is a quote. Get a written, property-specific scope with a firm number before you agree to anything.