The story
Founded by Howard Sims and Harold Varner in 1964.1
Private company
SDG Associates
Logo: sdg-assoc.com3
American architecture firm
Sims Design Group Associates LLC, often simplified as SDG Associates, is an American architectural firm, headquartered in Detroit, Michigan, U.S. It is the city of Detroit’s oldest and largest Black-owned architecture firm.2 It was founded by Harold Varner and Howard Sims.1 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
Overview
1964Founded1
- Industryarchitectural engineering, architecture, project management1
- HeadquartersDetroit1
- Websitewww.sdg-assoc.com
See how the biggest companies compare on our leaderboards
Sims Design Group Associates LLC, often simplified as SDG Associates, is an American architectural firm, headquartered in Detroit, Michigan, U.S.. It is the city of Detroit’s oldest and largest Black-owned architecture firm.2
Leadership
Who has led SDG Associates, and when. Pick a name to see everywhere that person has worked.
- FounderHarold Varner 19731
- FounderHoward Sims 19641
Timeline
- 1964Founded Founded1
Links
- Websitewww.sdg-assoc.com1
- Facebookwww.facebook.com/SDGassociates1
- LinkedInwww.linkedin.com/company/sdg-associates1
- WikipediaSDG Associates
- WikidataQ124344500
Sources
The numbers on this page point here. Each one links to the record it came from.
- 1WikidataSDG Associates on Wikidata
- 2WikipediaSDG Associates on Wikipedia
- 3Company websiteSDG Associates logo