Obtaining a bid stresses homeowners. Arm yourself with information by reading about the work you want to do, draw a plan outlining your needs as precisely as you can, or develop a good description of your desired job to give to all contractors. This will obtain bids on the same work so that you can make comparisons.
Contractors can supply a more precise quote if you are specific about your needs and desires. Ask each of the contractors you contact for itemized bids. Get copies of insurance certificates from each contact as well to prove that it is in force.
Allowances in the quote from a contractor cover items not yet selected. Financial woe can result if this budget is exceeded. Your contract should be very specific to avoid overspending projected costs.
Liens can be avoided. To keep a mechanic's lien from being filed against you, consult a real estate attorney. Know the contractor and the subcontractors before you start your job. Avoid legal hassle and financial woes with affidavits from your contractor before making payment.