Regular structural calculations for extensions, loft conversions

I run a thriving online Architectural Drawings company and we currently just recommend our clients to another Engineering firm if they need beam calculations.
I would be interested to hire a freelance Strucural Engineer to work for us on a project-by-project basis.

What we would ideally need is a pricing structure from you for all of our different project types so we would know how much to quote the client up-front.

We produce drawings for single storey extensions, two storey extensions, all types of loft conversions, some newbuild dwellings. You can see our quote form here which includes all of the projects we carry out https://arkiplan.co.uk/quote .

Either we would need fixed prices for each project type or the usual approx. number of hours you would spend on each + your hourly rate.

If you want to know anything else, please just ask.

Thanks,

Dave