Mark Pari is a self-employed electrician who exclusively uses a room in his home to perform the administrative functions related to his business. The room is 250 square feet of the 2,500 total square feet of his home. Mark's income from his business before considering the cost of his home office is $62,890. He incurs the following expenses related to his home:

Mortgage interest $10,200
Property taxes 1,500
Utilities 800
Maintenance fees 1,000
Repairs 600
Depreciation (unallocated) 5,000
Phone ($15 per month for a separate phone number for the office) 420
House cleaning 1,400
Long-distance phone calls (business-related) 670
renovations 4,700

Assume that the home is worth $200,000. Mark's basis is 140,000, the value of the land is 20% of basis, and the applicable depreciation percentage is 2.564%. Complete form 8829 using the above information. Mark's Social Security number is 136-42-5677. Forms and instructions can be downloaded from the IRS Web site.