California State Capitol Annex Replacement
Sacramento, CA · Government
Project details
A new Capitol Annex building of approximately 525,000 gross square feet, replacing the existing 325,000 square foot facility.

Bring Life to Buildings
Capital Engineering Consultants, Inc. is an MEP engineering consultancy founded in 1947 and headquartered in Sacramento, California. Operating across multiple California and Nevada locations, the practice provides mechanical, electrical, and plumbing engineering design, whole-building commissioning, energy modeling, and fire protection engineering services. It primarily serves the healthcare, education, civic, criminal justice, and transportation sectors. The practice has completed thousands of regional projects, integrating advanced BIM and Revit capabilities to deliver sustainable and code-compliant designs.
Kevin StillmanPresident, Civic/Justice Team Leader
Ashkan AzarkeyvanPrincipal, Commissioning Team Leader
Aaron WintersmithSenior Associate, Director of Sustainability
Steven LopezSenior Associate, Director of Fire Sprinkler Design
Anthony ColacchiaPrincipal, Civic/Justice Team Leader
Multidisciplinary mechanical, electrical, and plumbing engineering design tailored for civic, educational, and healthcare facilities.
Design of HVAC and specialized utility systems for complex facilities.
Power distribution, lighting, and low-voltage systems engineering.
Standard and specialized plumbing design, including vacuum plumbing systems for correctional facilities.
Collaborative pre-design and integration with contractors and architects to ensure cost-effective project execution.
Performance evaluation, commissioning, and diagnostic testing to ensure design verification, operational efficiency, and code compliance.
Analyzing architectural and engineering plans early to mitigate RFI risks and coordinate cross-discipline requirements.
Ensuring physical constructibility and equipment installations align directly with the supplied design documents.
Comprehensive functional testing for complex utility plants, HVAC, low voltage, and envelope systems.
Specialized verification services exceeding industry benchmarks to document compliance with environmental performance standards.
Energy simulation and life cycle cost analysis to support sustainable design goals and maximize utility incentives.
Utilizing industry-standard simulation tools including EnergyPro, eQUEST, EnergyPlus, and TRACE 700.
Evaluating long-term economic and operational efficiencies of mechanical systems.
Performance-based approaches to achieving Title 24 compliance while preserving architectural flexibility.
Securing financial incentives through utility programs such as Savings By Design.
Multi-market code-compliant sprinkler system design developed in 3D Revit models under NFPA 13 guidelines.
Standard wet systems for primary fire coverage in schools, hospitals, and commercial buildings.
Freezing prevention and accidental discharge mitigation systems for sensitive spaces.
Chemical suppression systems designed for shutdown-sensitive high-value spaces like data centers and server rooms.
Suppression systems for highly volatile industrial areas, fuel storage tanks, and airports.
Healthcare · Education · Government · Justice & Corrections · Transportation · Airports · Federal · Arts & Culture
Sacramento, CA · Government
A new Capitol Annex building of approximately 525,000 gross square feet, replacing the existing 325,000 square foot facility.
Justice & Corrections
A 345-foot tall high-rise federal courthouse with 16 above-grade floors, featuring courtrooms, an indoor firing range, and a secure plaza entry.
Healthcare
Conversion of an existing third-floor shell space and medical equipment storage room into a Hybrid Operating Room with imaging and support equipment.
Airports
A new 4-story central utility plant facility housing plant operations and staff offices, designed to replace a 50-year-old facility.