DeAngelis Diamond is a Naples, Fla., construction manager and general contractor that started in Southwest Florida in 1996. It’s since spread well past its home base, with offices in Sarasota/Tampa, Orlando, Birmingham, Nashville and Detroit. The firm builds for healthcare, education, office, multifamily and senior living, hospitality, aviation, automotive and manufacturing clients, and it says it has completed more than $6 billion in work. Right now it’s design-building Sarasota Memorial’s $82.5 million Rehabilitation Pavilion at the SMH-Venice campus, a four-story, 83,000-square-foot building with 50 private inpatient rehab rooms that broke ground Nov. 6, 2026. Local healthcare clients clearly keep coming back, since its Naples portfolio already includes hospital and orthopedic work.
DeAngelis Diamond lists five delivery methods, and says CM at Risk is the one most clients pick. The other four matter for how early an owner can bring the firm in. Preconstruction starts at the earliest design stage and applies Lean principles, stage-by-stage budget updates, VR and BIM simulations, value analysis and constructibility reviews. Program management goes further the other direction and is advisory rather than build-only: feasibility studies, architect and contractor selection, permitting, budgeting and cost controls, scheduling, FF&E procurement, occupancy logistics and commissioning. An owner without an in-house construction department can hand over most of the process and keep the decisions.
The technology claims are unusually concrete for a contractor. The firm states it became the first national construction management firm to go fully cloud-based, in 2014, and that it beta tests software for technology vendors. It keeps an internal data team, and says its people present at technology conferences and sit on technology organization boards.
Safety is reported with a number rather than a slogan: a 2024 EMR of 0, with a health and safety program every worker must agree to before entering a site. Alongside that, the firm handles disaster recovery through a partnership with Aeret Restoration, covering emergency response, reconstruction and insurance claim support — relevant in Southwest Florida, where a hurricane season can turn a client’s capital plan into a recovery plan overnight.
The industry list runs to sixteen named sectors, wider than the headline markets: automotive, aviation, business office, club and fitness, educational, faith based, healthcare, hospitality, manufacturing, storage, multi-family, senior living, non-profit, public, retail, and special projects and interiors. Named projects include the Arthrex Global Headquarters and the Naples Community Hospital Baker ED in Naples, Tru by Hilton in Franklin, Tennessee, and Amavida in Fort Myers. Client testimonials come from healthcare, club and faith-based owners including Sarasota Memorial Hospital, Largo Medical Center, Hendry Regional Medical Center, Neighborhood Health Clinic, The Club at Mediterra and Covenant Church.
On outside recognition, the firm placed #190 on the ENR Top 400 in 2026, up from #253 in 2024, and reports five Inc. 5000 appearances and eight Florida Trend Best Companies listings.
The company describes itself as founded on Christian values and biblical principles, and uses the motto “The Honor to Build.” It runs the DeAngelis Diamond Foundation, which donates a share of annual profits, and DD WE, a networking series for women in the business. It also states it actively seeks Minority-, Women- and Veteran-owned businesses and DBEs as trade partners, which is worth knowing if you are a subcontractor in one of those categories looking at its six offices.
