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DCD Design Cost Data

Bothell Dental Office Shell & Parking Garage

Broderick Architects

Posted: June 16, 2021 | Projects

In 2013, a thriving dental practice was ready to leave their location deep within a suburban strip mall. A new site down the road was selected for the prospective building site. The new location offered great visibility to the busy Bothell-Everett highway, but had limited area for both a building and a parking lot. As a result, it was elected to locate the parking under the building and use landscaped berms to screen the parking lot. The resulting office space on the upper floor managed to balance a tight program while keeping an inviting aura.

Photo Courtesy of Beth Ann Warner

The building program called for nearly 3,000 square-feet of space for the Bothell Dental Office. An “L” shaped plan was laid out over the parking garage below. Two stairwells, one of which serves an entry lobby and the other a service stairwell, were located at each end of the “L”. The entry lobby, main stairwell, and elevator can be accessed either from the parking area or from the front entry facing the street. Exiting the second floor main stairwell leads to a light-filled waiting area with large windows on both sides. Beyond the reception area are six operatories, followed by a lab and other service areas.

Beyond the program, the building’s look and configuration was further determined by fire preventative measures. Having the garage under the building resulted in the need for a non-combustible two hour fire-rated floor under the offices and at supporting construction. To achieve this, concrete masonry unit (CMU) was chosen for the walls, and a pan deck with open web steel joists and rated acoustical tiles were chosen for the floor/ceiling assembly. Above it, the building is wood framed. Proximity to an adjacent property line called for a continuous one hour fire-rating, a parapet, and limited openings. Walls surrounding the stairwells were either smoke barriers or one hour rated to the underside of the roof sheathing.

On the exterior, a northwest contemporary pallet of materials was chosen to keep with the style of nearby residences and for ease of maintenance. Materials included: cement fiber lap siding, metal roofing, cased windows, and wood trellises. Aluminum storefront windows with cement board trim and horizontal trim bands give the building both a modern and traditional feel. 

At the building base, CMU is used for both the building walls and the walls screening the parking. Natural colored CMU with one-sided ground face was installed on the single wythe walls in a random pattern to get a unique uniform look reminiscent of stone. Cedar trellises were added to the tops of the CMU screen walls for decoration and fall protection. Above, a generous metal roof has large overhangs on the south and east for sun control. It serves as a parapet to conceal rooftop mechanical equipment. Landscaping in front of the building adds to the positive vibe of the building and can be viewed from nearly all interior locations. 

A Building Information Model was used for interior/exterior design documentation, consultant coordination, and 3D virtual walkthroughs used in client presentations.

Building Envelope: James Hardie, Basalite 
Roofing: AEP Span, Carlisle., Firestone
Windows, Entrances & Storefronts: Kawneer
Glazing: PPG
Elevator: Thyssen Krupp
Interior: Sherwin Williams, Armstrong, USG, Linden Doors, Roppe, Pental
Flooring: Patcraft, Armstrong, Karndean
Lighting: Focal Point, Tech Lighting, Juno, Navlite, Spectrum Lighting

Broderick Architects
55 S. Atlantic Street, #301
Seattle, WA 98134

Structural & Civil Engineer
Davido Consulting Group
15029 Bothell Way, N.E.
Lake Forest Park, WA 98155

Mechanical Engineer
D.J. Mechanical, Inc.
5716 119th Avenue, N.E.
Lake Stevens, WA 98258

Electrical Engineer
System Solutions of Washington
P.O. Box 5308
Lynnwood, WA 98046

General Contractor
Bruce Company
P.O. Box 53105
Bellevue, WA 98015

Date Bid: June 2013 
Construction Period:  Aug 2013 to Feb 2014          
Total Square Feet:  5,302
Site:  0.19 acres.
Number of Buildings: One.  
Building Sizes:  Garage, 2,305; first floor, 395; second floor, 2,602; total, 5,302 square feet.  
Building Height: Garage, 8’3”; first floor, 8’10”; second floor, 10’; total, 28’8”.  
Basic Construction Type: New/VB (Offices)/IIB (Parking)
Foundation: Cast-in-place, slab-on-grade. 
Exterior Walls: CMU, wood stud.
Roof: Metal, membrane. 
Floors:  Pan deck with open web steel joists.
Interior Walls: Wood stud drywall.

Click here to view the full cost details for this project in the May/June 2021 issue of DCD