Dallas County reviews $3.31 million 100% DD estimate for Auditor’s office renovation

Turner Construction Co. delivered a 100% design-development budget estimate of $3,307,996 for the Dallas County Auditor’s Office renovation, covering two sites: 100 Nile Kinnick Drive and 210 N. 10th Street. The estimate, presented to the Dallas County Board of Supervisors, breaks down direct construction costs, contingencies, contractor-controlled insurance and owner-provided furniture and equipment to arrive at the project estimate total.

The design team and Turner said the estimate reflects value-engineering efforts that reduced earlier estimates and noted scope items that raised costs, including increased demolition and asbestos abatement at 100 Nile Kinnick and specialty HVAC and electrical work at 210 N. 10th. Turner’s submission lists the MasterFormat cost summary (direct-cost subtotal roughly $2.03 million), insurance and bonding, escalation and contingency, CM services and owner costs to reach the $3,307,996 total.

Turner identified seven priced alternates the Board may consider: brick veneer ($124,599); high-density archival storage ($134,175); dry-chem fire suppression at 210 N. 10th ($168,986) and at the 100 Nile Kinnick basement ($86,521); generator relocation ($46,180); an early-voting vestibule ($119,979); and demolition of the banking canopy ($83,738). The company also noted asbestos testing and abatement costs were not included in the estimate and would be additional if required.

The presentation described a CMAR-driven schedule and procurement plan: continuing design development and construction document work through September 2026, pre-approval of bidders, solicitation and GMP formation in the fall, and construction beginning in early January 2027 with an anticipated roughly nine-month field schedule and substantial completion expected in late September 2027. Turner described milestones for the 100% design development deliverable, 95% and 100% construction documents, bidder pre-approval and GMP submission steps.

County staff materials and Turner’s reports list several exclusions and owner responsibilities (permits, site acquisition, some testing/remediation). The presentation also included project logistics and site plans showing temporary site offices, laydown areas and measures to maintain access to on-site election equipment and ATMs during construction.

Next steps in the record are continued design-document development, bidder pre-approval activities and later board consideration of GMP-level costs and award; the transcript materials do not record a board vote adopting the estimate as a contract change at this meeting.