Design-Build Contractor
Langston Construction Company delivers integrated, single-source design-build. One contract holds design and construction, so one team owns the schedule, the cost, and the outcome from foundations to finish.
What Langston delivers as your design-build contractor
As a single-source design-build firm, we hold the civil, structural, and physical-security construction and coordinate the engineer of record. One accountable team, from concept to closeout.
Single, integrated contract
One prime contract covers both design and construction. You get a single point of accountability, with no gap between the designer and the builder.
Engineer-of-record collaboration
We bring the engineer of record onto the team from day one. Design and construction move together, so constructability is built in, not discovered late.
Site civil and earthwork
Mass earthwork, grading, and drainage to AASHTO and SCDOT standards, delivered by our own crews under the design-build contract.
Concrete foundations and structures
Cast-in-place foundations, equipment pads, and containment structures to ACI 318, the load-bearing core of the project.
Structural steel
Structural steel erection and connection welding to AISC 360 and AWS D1.1, sequenced against the design-build schedule.
Preconstruction and GMP
Our preconstruction team commits a guaranteed maximum price with field confidence, because the crews who price the work are the crews who build it.
Why owners choose Langston for design-build
One construction discipline, delivered five ways. Owners contract Langston as a design-build firm because the crews behind the single-source price have built a continuous project record since 1969, backed by an AGC CSEA 1st Place Utility Division award for 2026 and delivery.
Representative project record
A sample of Langston's executed construction across the verticals we deliver design-build in.
Stevens Aerospace Maintenance Facility
An aircraft maintenance facility built from site and foundations through the finished hangar and offices.
Hobbysville Fire Station
A fire station in Enoree, SC, delivered from site work through the finished building.
Presbyterian McIntosh Athletic Center
The McIntosh Athletic Center at Presbyterian College, built from site through structure and finishes.
Frequently asked questions
What is design-build construction?
Design-build is a single contract that covers both design and construction. One team is accountable for the whole project, instead of the owner managing a separate designer and builder.
What are the advantages of design-build over design-bid-build?
One point of accountability, faster schedules from overlapping design and construction, and earlier cost certainty. The owner deals with one team instead of refereeing between a designer and a builder.
When is design-build the best delivery method?
When schedule matters, when the owner wants one accountable party, or when the design can keep evolving while construction starts. It fits fast-track industrial, utility, and infrastructure work.
Who is liable in a design-build contract?
The design-builder. Under one contract, Langston and its engineer-of-record collaborator carry single-source responsibility for both design and construction.
Does Langston Construction Company offer design-build for energy and utility projects?
Yes. We deliver design-build across energy, water, data center, transportation, and physical-security work, with an engineer of record matched to each vertical. We hold the civil, structural, and security scope; the design partner holds the engineering.
Have a design-build project?
Talk to the Langston team about single-source delivery for your next industrial or infrastructure project.