Months later still insisting they've got $6,000 of material there.

Then normal cost for replacing the torn out materials.  

When their lease is up I would non renew.You will need to renovate the place before you get a new tenant, scrub everything down with TSB, remove all carpets, curtains/material etc. and paint with Kilz.Once you start fresh stick to your no smoking policy.

Looked great and cost less than $100 in materials for the entire staircase.

Hi @Ying Lan,Thanks for posting in the forums.However, we do not allow self-promotion, and posts looking for real estate agents tend to generate a lot of self-promotion from the agents on the site.We've locked this thread so it doesn't get filled with these posts.

As far as partnering with him, a partnership on a rental property may be an option if I can bring credit or financing to the table, but I am getting paid to do the layout design, drawings, and material selections for his new construction investments and client remodels, so no opportunity on that end.

This estimator will use local material and contractor pricing to determine what it would cost to rebuild the home. 

Is that labor only or does it include the cot of materials?

The material cost me about $500 (for dimensional, not three tab shingles) and the insurance check was for about $1400-$1500.

Investing defined:  expend money with the expectation of achieving a profit or material result by putting it into financial schemes, shares, or property, or by using it to develop a commercial venture.