Tenhulzen Reserve is located in the Sammamish Valley adjacent to the City of Woodinville in unincorporated King County. The property formerly known as Jack's Tractors was owned by John and Sharon Gunderson from 1990 to 2014. For five years thereafter, the property was converted for distribution of a variety of alcoholic beverages by Sal Leone of Larone Holdings, LLC. On September 13, 2019 Michael
and Traci Tenhulzen of TM Squared, LLC acquired the property with an entirely different vision: to actively revitalize the property's rural charm while bridging adjacent commercial and agricultural properties. Located on the fringe of Woodinville's Tourist District and across the street from the Visitor's Center, Tenhulzen Reserve is ultimately planned to become an inviting landscape of native and decorative vegetation around a cozy B&B. Although the 1.48 acre parcel is zoned in the agricultural zone, the land itself has never been used for growing crops of any kind. Aerial photos available on King County iMap as far back as 1936 showing present day parcel boundary overlay indicate the property was initially used as a vehicle pathway from a homestead bordering the south to a 7 acre crop on the parcels bordering the north and west. By 1998, the Northshore Athletic Fields replaced most of the agricultural and wooded area of the original farmstead and Jack's Tractors was a going concern. As the tractor repair shop expanded, so did the impervious surface. Impervious surface is defined as any material a raindrop lands on that prevents is from soaking into the ground. The main reason to limit impervious surfaces is so rainfall doesn't turn into standing surface water, which can carry silt and surface toxins into waterways that lead to the ocean. Geologists that study the affects of annual rainfall on average soil types in King County have provided data that County code writers have created, limiting the amount of impervious surface to any given parcel. The percentage of allowable impervious surface increases with increased zoning density. In 1936, impervious surface would have been calculated by today's standards at around 1% to 2%. RA-5 zoning allows for a maximum of 20%, so close to 40% of the roof and gravel areas need to be eliminated in accordance with any other planned improvements. As other development throughout the incorporated parts of the Sammamish Valley continue, the ownership of Tenhulzen Reserve is committed to being good stewards of the land and promoting that stewardship throughout the Valley.