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� SW8�DT Fee Review December 1, 2014 Page 2 THE FOLLOW/NG IS SUPPLEMENTARY INFORMATION TO MAY 2014 WORK SESSION MEMO Data Review - SW&DT Fees Collected Since Inception Attachment 2 is a table presenting an updated history of the SW&DT fees collected for new single-family residential developments since the ordinance was implemented in 2002. Fees collected to date total just over $850,000 from 28 individual subdivisions. An analysis of the fees, which by ordinance are based on total acreage of a development site (including wetlands), can be summarized as follows: 1. In all but 3 of the 28 subdivisions, the fee was calculated based on the total property in the subdivision, including the existing home when one existed. In finro of the three anomalies, only the one newly-created vacant lot was charged the fee on the basis that the remaining further-subdividable acreage with the existing house would create no additional stormwater impacts unless/until further subdivided. The third anomaly was a lot line rearrangement that made an existing lot buildable, so only the newly-buildable lot was charged the SW&DT fee. 2. The vast majority of fees have come from developments in the 2-acre zoning districts. The per-acre trunk fee for the 2-acre zone has risen from $2700 in 2002 to $3840 in 2014, an increase of just over 3% per year over 12 years. The average fee "per lot" collected from 69 lots created via subdivision in the 2- acre zones since 2002 is $9,833 per lot, with a range from $5,400 to $12,800 per lot. This wide range is a function of the increasing per-acre fee over time, and the size of the individual lots beinq created. Larger lots pay for more acreage (but not for more than 4.0 acres per lot in the 2- acre zone). This is, of course, counter-intuitive to the concept that bigger lots have less stormwater impacts; the justification basis is that larger lots have greater volumes of runoff under certain conditions such as frozen or already saturated ground, and require lengthier stormwater conveyance systems to serve them (another example of the higher cost of low density). 3. Relatively few properties have developed in the 1-acre and 5-acre zones since 2002. Average per-lot SW&DT fee charged in the only 1-acre subdivision was $12,225 per lot; each lot was nearly 2-1/2 acres. In the 5-acre zone, only two subdivisions occurred; one created two lots of 7 acres each, with a resulting per- lot fee of$14,980; the other created two lots of 5 acres each, and took advantage of a 50% credit allowed for placing acreage in conservation easements, resulting in a per-lot fee of only $6,717. 4. Since 2002 there have been 5 subdivisions (4 complete, 1 pending) subject to the 1/2-acre zone SW&DT fee, creating a total of 29 single-family lots. The average per-lot fee resulting from this higher density development is $3,825 per lot, with the average lot size of 0.75 acre.