Instead of debates and personal opinion, look for proof https://www.ladbs.org/docs/default-source/forms/plan-check-2017/single-family-dwelling-duplex-plan-review-list.pdf under G (Interior Env) which defines the minimum requirement of a habitable room (aka bedroom or bathroom).

We got Interior/Exterior Rehab Reserve of about $250K.

List Price $170,0001 Br/ 1 BA - Current Rent $450/ Mo1 Br/ 1 BA - Current Rent $450/ Mo3 Br/ 2BA - Current Rent $550/ MoHomes are in Fair to good condition on the exterior, interior showings not available until under contract during due diligence period.The Plan (currently)Try to negotiate to a better but calculate rents based on full price offer. 

If your contract doesn’t state terms for additional access, then I understand his concern, maybe ask if you can video the interior, although most tenants won’t want that.

A Queen Ann Victorian has best tri-potential, but will be a choppy-choppy layout so many interior wall moves to be done.

Full interior and exterior renovation!

I have done interior ivy walls, ice cream makers, fresh squeeze orange juice, and even converted an outdoor shed into a "Van Gough Art Studio" to give 1 house a leg up.

The strange thing is the listing says no interior access is allowed.

Chipping or peeling paint on the interior & exterior surfaces is definitely something they look for. 

I wouldn't limit it to roof as wind and water can damage other areas of the home..what if a window was left open and the interior now has water damage etc...Did you already bind your insurance (likely not if you are two weeks out) So there may not be a reason for them to dictate you get it reinspected.