i'm richard drury, representing phillip kauffman, owner of the directly adjacent property 2421 green street. i'd like to use the overheads here, so i -- thank you. this appeal concerns a proposal to expand the property of 2417 green street from the existing 4,100 square foot residence to a 6,000 square foot residence on a 2,500 square foot lot. this will be double 2.5 area ratio. this will not create an additional housing unit. it will take one large house and create a tremendously large house. the planning department issued a categorical exemption. the primary finding is that the project would not affect the historical resource, but the categorical exemption ignores the property of 2421 green street, which is immediately adjacent to the subject property and uphill. that house is perhaps one of the most significant historical residential properties in the entire city of san francisco, possibly one of the most historically significant properties in the country. it was built in 1893 by earnest coxhead, who was the fore father that used the shingles that came to be known as arts and cra