If the drawings do not include a door schedule, it may be worth the estimator’s time to develop one, especially if the project is large or complicated. The schedule should indicate the opening number, door type, size, material, glass or louver requirements, and remarks. The quantity take-off process can be expedited by making a copy of the schedule and noting the quantity and hardware requirements next to each door type.

The door schedule should include a frame schedule listing the frame material; type; and jamb, head, and sill details. Fire-rating, ballistic, and pressure requirements should be noted.

Hardware requirements should be listed on the door schedule as well. Keep in mind the fact that the hardware can, in some instances, be more costly than the door itself. The hardware schedule may be in the specification.

Wood doors vary considerably in price. The primary determinant is the veneer material. Lauan, birch, and oak are the most common veneers. Other variables include:

• Hollow or solid core
• Fire rating
• Flush or raised panel
• Finish

Interior Door Ratings - For walls to be considered fire-rated, any doors in those walls must be fire-rated. Most plans do not spell out which interior partitions are to be considered fire-rated. In commercial applications, a rule of thumb is that all partitions that have drywall (or masonry) from the floor to the above structure, and few, if any, penetrations should be considered fire-rated. The glass in a rated door should be fire-rated.

Door Hardware - Hardware requirements should be listed on the door schedule as well. Keep in mind the fact that the hardware can, in some instances, be more costly than the door itself.

Handicap Access - While the drawings may not show it, local codes may require special hardware and opening systems to allow a structure to be accessible to the handicapped. Contact the local authorities for their codes and requirements.

Special Doors - Special attention should be given to any oversized or unusual type of door. Such items should not be priced on a prorated basis, as they are generally special ordered. The cost of special doors can skyrocket, especially if they involve exotic woods, special finishes, or special attention (which usually means higher labor costs). Note that special doors may require a considerable amount of lead time for ordering and shipping and may also require large equipment.

Read more estimating tips for openings.