Fully Integrated Government Real Estate Developer | SDA Inc. | Trusted Since 1979

Our Leadership Team

Built on Experience. Defined by Excellence.

Est 1979

Our Story

For over four decades, SDA has partnered with government agencies to develop spaces that support the people who serve our nation. We’re a family-owned firm offering fully integrated development, design, construction, and property management under one roof.

  • Family-owned with a long-term, future-facing perspective
  • Fully integrated execution for total control and consistency
  • Proven expertise across government and private sectors

More than a developer, SDA brings continuity, oversight, and care to every project we take on

Our Projects, Past and Present

Explore our portfolio of recently completed, in-progress, and legacy developments across the U.S.

VA clinic under construction with framing and scaffolding visible

Projects in Motion

View our projects in progress across the country. Every project under construction represents more than a building—it’s a commitment to the people who will live, work, and serve within its walls.


Current Projects
Completed federal facility exterior view

A Portfolio Built to Last

SDA’s legacy properties are more than milestones—they’re enduring symbols of purpose, trust, and vision fulfilled. Browse our property showcase to see the lasting impact of our commitment—one building at a time.


Our Properties

Recent Milestones

Celebrating progress, partnerships, and the lasting impact of purpose-built facilities.
Veteran cutting ribbon at Castle Rock VA Clinic
40+ Years Serving Those Who Serve

A New Home For Healing: Castle Rock VA Clinic

On May 12th, SDA celebrated the opening of a state-of-the-art medical facility designed for those who served.

The ribbon cutting brought together SDA team members, veterans, civic leaders, and partners to mark the completion of a shared vision.

SDA team and veterans at ribbon cutting ceremony
Showing Up, Shoulder to Shoulder

Celebrating side-by-side with those we serve reinforces our mission: creating spaces that honor commitment, resilience, and service.

Veterans saluting during ribbon cutting event
Spaces That Serve

We designed and built this clinic to elevate the experience of care—for both veterans and medical professionals.

Every Phase. Every Detail. One Team.

From site selection to long-term management, SDA delivers unified, expert-led real estate execution—without handoffs or blind spots.

Real Estate Development

Real Estate Development

Founded in 1979 by Stephen Biagiotti, SDA has developed office buildings, medical clinics, neighborhood shopping centers, and land developments valued over $500 Million.

Architectural Design

Architectural Design

We blend architectural vision with engineering expertise to create build-to-suit lease-back office buildings that are as functional as they are timeless.

Construction & Contracting

Construction & Contracting

Broadly licensed in the Western U.S., our expert construction team delivers precision, quality, and reliability in every project—built right, every time.

Property Management

Property Management

With over 40 years of experience, we specialize in managing government office buildings ensuring seamless operations and long-term value for your real estate investments.

Designed to Serve. Built to Endure.

From secure federal offices to mission-critical medical clinics, our developments meet the moment—and the decades ahead. From secure offices to care delivery sites, we design for real use, real needs, and real longevity.

Government-leased property developed by SDA.

General Services Administration

Our integrated team delivers government facilities that meet rigorous standards and real-world needs. With decades of experience, we design, build, and manage properties that serve public missions—and strengthen the communities around them.

State-of-the-art VA medical facility.

Medical / VA

We build high-performing government medical clinics—from site planning to final inspection—with one goal: to support the health and dignity of those who served. Our process centers long-term care, staff efficiency, and mission delivery.

Builiding Facilities For Partners That Serve the People Who Serve

We work closely with our partners to develop properties that meet real needs—from secure federal sites to dynamic workplaces that support everyday operations.