General Contractor vs Construction Manager: Which Fits Your Houston Project?
Owners planning a commercial project in Houston often hear two titles used as if they were the same thing: general contractor and construction manager. They overlap, and on many jobs the same company can play either role. But the contracts, the timing and who carries the risk can be quite different. Picking the wrong structure can mean paying for oversight you do not need, or carrying cost risk you did not expect.
This guide explains the differences in plain English. It is general information, not legal or contract advice. For a related decision about how design and construction are bundled, see our comparison of design-build vs design-bid-build for Houston commercial projects.
The short version
- A general contractor (GC) is usually hired after the design is largely complete, prices the work and signs a contract to build it, then hires and manages the trade subcontractors.
- A construction manager as agent (CMa) acts as the owner's advisor and representative. It helps with budget, schedule and coordination but usually does not hold the trade contracts or carry the construction price.
- A construction manager at risk (CMAR) joins during design to advise on cost and constructability, then takes on the construction contracts and the price risk, often under a not-to-exceed maximum price.
What the industry groups say
The Construction Management Association of America explains on its page What is Construction Management? that construction management is a professional service that gives owners effective management of a project's schedule, cost, quality, safety, scope and function. CMAA says construction management is compatible with all project delivery methods and that the construction manager represents the owner's interest.
The AIA-AGC Primer on Project Delivery, published jointly by the American Institute of Architects and the Associated General Contractors of America, compares design-bid-build, construction management at risk and design-build side by side, including when each party joins the project and how risk is shared. It is an older document but remains a widely used plain-language reference.
How Texas public owners describe the options
Private owners in Houston can structure their contracts however they and their builders agree. Texas public entities, however, must follow state law, and that law is a useful map of the options. Texas Government Code Chapter 2269 sets out the methods public bodies may use for construction, including competitive bidding, competitive sealed proposals, construction manager-agent, construction manager-at-risk, design-build and job order contracts. Seeing the CM agent and CM at risk methods listed separately is a reminder that "construction manager" can mean two very different roles.
How a general contractor arrangement works
In a typical GC arrangement, the owner hires an architect and engineers to prepare drawings. When the drawings are ready, contractors price them, often in competition. The owner signs with the selected GC, usually for a lump sum or a cost-plus contract. The GC then hires subcontractors, schedules the work, manages the site and is responsible for delivering what the drawings show.
Where it fits well: clear scopes with complete drawings, such as a standard office buildout or a warehouse office, and owners who want a firm number before work starts.
Watch for: gaps or conflicts in the drawings that become change orders after the contract is signed, and limited builder input during design.
How a construction manager as agent works
A CM agent is hired by the owner, often early, to help set the budget, review designs for cost and schedule, help procure contractors and track progress. The owner usually holds the contracts with the trade contractors or the GC directly. The CM agent is paid a fee for its services and does not normally commit to the construction price.
Where it fits well: owners with large or multi-phase programs, owners without in-house construction staff, and projects with several prime contracts.
Watch for: paying for an extra layer of management on a small, simple project, and the fact that the owner, not the CM agent, usually keeps the cost risk.
How a construction manager at risk works
A CMAR is selected during design, often based on qualifications plus fees and general conditions rather than a full construction price. It provides preconstruction services, such as estimates at each design stage, constructability reviews and early schedule planning. When the design is far enough along, the CMAR commits to a price, commonly a not-to-exceed maximum price, then buys out the trade work, often through competitive bids, and builds the project.
Where it fits well: projects where early cost and schedule input matter, such as complex renovations of occupied buildings, phased work or tight opening dates.
Watch for: how contingencies and allowances inside the maximum price are defined, how savings are handled and how open the trade buyout is to owner review.
Side-by-side comparison
| Question | General contractor | CM as agent | CM at risk |
|---|---|---|---|
| When hired | After design | Early, often before design | During design |
| Holds trade contracts | Yes | Usually no | Yes |
| Carries construction price risk | Yes, for the contract scope | Usually no | Yes, once the price is set |
| Main role during design | Limited | Advisor to the owner | Preconstruction advisor |
| Typical pricing | Lump sum or cost-plus | Professional fee | Fee plus cost of work, often with a maximum price |
Permits and inspections work the same either way
The contract structure does not change city requirements. In Houston, a commercial buildout still needs the right permits, plan review, inspections and, before anyone moves in, a certificate of occupancy. The city's Buildout Permit page (HPWCODE1148) lists plan review and inspection as required. What changes is who prepares and tracks those steps, so spell that out in the contract. Our guide to the buildout permit process in Houston walks through the sequence.
How to choose
Lean toward a general contractor when:
- The drawings are complete or nearly complete.
- The scope is familiar and fairly standard.
- You want competitive lump-sum prices on identical documents.
Lean toward a construction manager when:
- You want builder input on cost and schedule while the design is still changing.
- The building will stay occupied and phasing is complex.
- You are managing several projects or several prime contracts at once.
Questions to ask before you sign
- Who holds each subcontract, and who is responsible if a trade falls behind?
- What exactly is included in the fee, the general conditions and any contingency?
- If there is a maximum price, what happens to unused contingency or buyout savings?
- How are change orders priced and approved?
- Who handles permits, inspections and the certificate of occupancy?
- What reports will you receive on cost and schedule, and how often?
FAQ
Is a construction manager more expensive than a general contractor?
Not necessarily. A CM adds preconstruction services and fees, but early input can reduce redesign and change orders. The value depends on the size and complexity of the project.
Can a general contractor provide preconstruction services?
Yes. Many GCs offer budgeting and constructability reviews on negotiated work, which blurs the line with a CM at risk.
What is a maximum price contract?
It sets a ceiling on the construction cost for a defined scope. Changes in scope, allowances and contract terms can still move the final number.
Which is better for a tenant improvement?
Many straightforward tenant improvements use a general contractor. Larger, phased or occupied-building work is where a construction manager is more often considered. Our overview of tenant improvement in Houston covers the basics.
Deciding how to deliver a Houston commercial project? BPC Development LLC provides free on-site estimates in Houston, TX. Call (281) 301-4737.