[MindBomber]

Originally Posted by ws6ta

don't mean to get into your business but I am curious what was your fee for doing this? how many sq ft? do you charge a fee based off of sq ft or a flat fee? I've never built for anyone but myself so unaware but curious. PM is cool too .

thanks

I work as a sub for general contractors, so I'm not completely familiar with how complete projects are billed, but I'm somewhat familiar.

I've met contractors who do a flat fee and others who bill hourly, the flat fee seems most common with commercial contractors and custom home builders working on larger projects that are well laid out at the time of the bidding process. Custom home builders for example, mostly bill a flat fee that comes off the instalment payments throughout the project, and if the owners need to spend time with the contractor outside of what's allotted for in the bid they're billed additionally by the hour. The guys who bill entirely hourly have mostly been doing renovations and other small things, usually they do a component of the work themselves. That's just what I've gleamed in my experience as a sub.

Originally Posted by highfive

Mechanical systems costs

plumbing / heating & gas / electrical systems.

All the piping and wiring for you to have a running kitchen/ bathroom/ lights / outlets etc.... but less living space compared to a regular house

this.

To go into more detail: in a carriage house you still need a breaker panel, hot water heater, furnace and every other mechanical system, but downsizing those systems and installation costs for a lower square footage doesn't drop the price exponentially from a full sized house.