It didn’t matter that we have good  credit, income, and clean history otherwise...  

I don’t mind cleaning the fallen debris from it since it provides shade in/onto my property.

I'm going to be a bit of a contrarian to the above posters, but let me first qualify my post by stating that your market will determine what you should do.We frequently install en-suite laundry in our units - in fact, we have removed common coin-op laundry in most buildings of 6-units or less in favour of en-suite laundry - for the following reasons:electricity and, in most cases, hot water costs are transferred to the tenant;where water is sub-metered, water costs are transferred to the tenant;high-efficency residential laundry machines are about half the capital costs of commercial coin-operated machines;we can command $30 - $50/month in additional rent with en-suite laundry;by installing our own machines, we know they are installed property, with catch/drain pans and {going forward} leak detect shutoffs; andwith en-suite laundry vandalism of laundry machines has been non-existant ... and if a machine is damaged, we know who is responsible.We have a good rapport with a couple of local appliance suppliers and get called whenever they have "dinged and scratched" units to unload ... a small, cosmetic dent in the side of a washer - which will never be seen when it is installed in a laundry closet - can be worth a 40 - 50% discount.  

I  mean I buy vacant land.. and other non cash flow deals.but I have a way to value add ( build on them) or a pretty strong idea that path of progress is going to run into us.really depends.. and I agree building wealth at 100 to 200 a month at a time.. you take on a ton of debt for very little actual return..

Any chance after hosting at a non-smoking joint in the future? 

Buy that house, clean it up, fix it if it needs fixing and sell it.Buy below market price because the sellers have issues in their life, add value to the property, sell at market price.I would definitely go to Alamo REIA.

They said that they would clean it.

Best of all it's nontoxic and won't harm pets. 

Totally non-original story...my husband and I both work full time (I'm a teacher) and we're interested in real estate investing.

My current tenant is very solid with way north of 3x income to rent and fairly clean credit but had to move for a job.