This is why cross-shopping and returns to physical brick and mortar stores for a retailer is working so well.

If truly all it needs is a new roof to be complete and ready to sell then a few ideas off the top of my head could be:1)  Borrow the money from friends or family to replace the roof2)  Put the cost of the roof on a no/low interest credit card and pay it off as soon as the house sells3)  Go through a home improvement store (like Home Depot) that offers financing for larger projects like roof replacement4)  Don't replace the roof and just lower your sales price or offer the buyers a credit to fix it themselves after closing

Will you provide a porta potty, or not (think trips back and forth to the nearest convenience store or gas station, or worst-case, they use a corner in the backyard, which leaves the wrong impression on your neighbors)? 

A walk away from many gas stations, grocery stores, 1 mile away from the hospital and walking distance from schools.

@Antowayne Watson definitely the BP podcasts and any of the Books in the BiggerPockets Book store.

If anything was left by the tenant and later found, it shall be stored and/or disposed of by the landlord as per law.Security Deposit: As per agreement and as required by law (RCW 59.18.280) within twenty-one (21) days after the termination of the rental agreement and vacation of the premises or the landlord’s learning that the property has been abandoned, the landlord shall mail to the tenant’s last known address a full and specific statement of the basis for retaining any of the deposit together with the payment of the refund due the tenant under the terms and conditions of the rental agreement.

My day job is being the manager of a Auto accessory store and the co-owner of a rental equipment company.  

I tell them if the oven isn't clean they can save themselves some money and time by going to the store and purchasing two cans of easy-off while they wait.If they coat the oven and racks with easy-off (no generics) and leave an empty and full can on the counter then I charge $30 for the oven clean otherwise it's $150 -- this is in my move-in condition report which is part of the lease. 

I know people who go to three grocery stores every week to get the "best deal" everywhere and maybe they save $10.

My recommendation is to use a password manager such as LastPass to store your codes and make them randomly generated codes.