Before you nail down your next home improvement project, learn the lingo. These common terms and definitions may help you avoid miscommunications with your contractor.

Allowance - A specific dollar amount allocated by a contractor for specified items in a contract for which brand, model number, color, size, or other detail is not yet known.

Bid - A proposal to do work for a certain amount of money, based on plans and specifications for the project.

Building Permit - A document issued by a governing authority, such as a building department, granting permission to undertake a construction project.

Call-back - An informal term for a return visit made by a contractor to repair or replace item the home owner has found to be unsatisfactory or that require service under the warranty.

CGR - (Certified Graduate Remodeler) - A professional certification program offered through the National Association of Home Builders (NAHB) Remodelers Council. To attain the CGR designation, a remodeler must take a specified number of continuing courses and must comply with a strict code of ethics.

Change Order - Written authorization to the contractor to make a change or addition to the work described in the original contract. the change order should reflect any changes in cost.

Cost-plus Contract - A contract between a contractor and homeowner based on the accrued cost of labor and materials plus a percentage for profit and overhead. Also, known as a time-and-materials contract.

Draw - A designated payment that is "drawn" from the total project budget to pay for services completed to date. A draw schedule typically is established in the contract.

Lien Release - A document that voids the legal right of a contractor, subcontractor, or supplier to plave a lien against your property. A lien release assures you that the remodeler has paid subcontractors and suppliers in full for labor and materials.

Mechanic's Lien - A lien obtained by an unpaid subcontractor or supplier through the courts. When enforced, real property - such as your home - can be sold to pay the subcontractor or supplier.

Plans and Specifications - Drawings for the project, and a detailed list or description of the known products, materials, quantities, and finishes to be used in the project.

Punch List - A list of items of work to be completed or corrected by the contractor, typically near or at the end of the project.

Subcontractor - A person or company hired directly by the contractor to perform specialized work at the job site. Sometimes referred to as a trade contractor.