Alliiance: Detailed Company Information & Corporate Profile
Summary
Alliiance was founded in 1970 and is headquartered in Minneapolis, MN, where it delivers construction design services to a broad spectrum of sectors. The firm specializes in master planning, interior design, and architecture for environments such as aviation, science & technology, higher education, corporate, civic/community, hospitality, retail, workplace interiors, and many others.
Operating independently with 100‑200 employees, Alliiance generates between $50 million and $100 million in revenue. Its leadership roster includes Principal and President Mamie Harvey AIA; principals Julie Oseid MacLeod AIA, Amanda Aspenson, Amber Sausen AIA; senior associates Gauri Kelkar and Megan Conner; director Carol Nagele; and project leaders Nickisha Vander Wyst and Zach. Together they drive the firm’s comprehensive design solutions across diverse settings.
| Alliiance Website | alliiance.com |
| Social Links |  |
| Phone Number | +1 612-874-4100 |
| Industries | |
| Alliiance Headquarters Address | 400 Clifton Avenue, Minneapolis, MN, 55403 US |
| Company Size | 100-200 employees |
| Specialities & Services | Master planning, interior design, architecture in several environments, including: aviation, science and technology, higher education, corporate, civic/community, hospitality, retail, workplace interiors and many more. |
| Founded | 1970 |
| Estimated Annual Revenue | $50M - 100M |
| Operating Status | Independent Company |
| Updated: | 2026-10-13 |
Competitors
Name | Founded | Type | Employees |
|---|---|---|---|
| 2010 | Privately Held | 25 - 100 | |
| 2002 | - | 500 - 1.0K | |
| 1952 | Privately Held | 10-50 | |
| 1996 | Privately Held | 10-50 |
Estimated Website Traffic
The chart shows a growth in traffic to the alliiance.com website. In September, traffic increased to 10338, compared to 10203 in the previous month. The highest traffic in 2026 was recorded in September, reaching 10338 visits.
Workforce Turnover
Number of employees switched from or switched to
Length of Employment
Alliiance's workforce includes employees across a wide range of tenure levels.
11% have been with the company for 1 to 2 years5% have been with the company for 3 to 4 years11% have been with the company for 8 to 10 years74% have been with the company for more than 11 years
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Alliiance Corporate Information: FAQ
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