How to DIY it: There are lots of ways to clear a drain, so start with the easiest one. If your sink has a pop-up stopper, remove that and clean it. If that doesn’t do the trick, fill the sink with 3 or 4 inches of water and use a plunger to plunge the sink (plug the overflow hole with a wet rag first). Still slow? Try snaking the drain pipe with a metal hanger or a pipe-cleaning tool (sold at hardware stores for about $2).
If you are willing to buy and pick up the materials yourself, you avoid paying for shopping and pick-up time. But you may find it inconvenient, strenuous, and time-consuming to pick up a load of bricks, a few large sheets of plywood, or similar items. If the company will be doing the shopping and buying, get the company to commit to the time and cost for that task; some will agree that there will be no extra charge.
There's no national standard or regulation for handymen. Licensing and regulation vary by state. New Jersey, for example, requires handymen who work for a profit to register with the state and carry insurance. California requires handymen to carry a license from the State Contractors License Board to work on any project that exceeds $500 in labor and material costs. Find out before you hire the handyman if he or she has the skills needed to complete your project. Need Handyman Repairs? Click Here