For school districts and municipalities, finishing on schedule is a secondary concern, finishing on budget is the one that gets a superintendent or city manager called before the board. Cost overruns in public construction come out of funds tied to classrooms, public safety facilities, and infrastructure that serves constituents for decades. That’s why the delivery method matters: it determines who carries cost risk, who sees the numbers, and whether the owner is a passenger or a participant.
The Construction Manager at Risk (CMAR) method addresses this directly. The construction manager commits to a Guaranteed Maximum Price before construction begins and absorbs any overruns above that figure, a structural shift that puts financial exposure on the builder, not the public entity. T.F. Harper layers an open-book bidding process on top of that structure: clients see every subcontractor bid received, not just the ones we recommend accepting.
What Is Construction Manager at Risk?
Under CMAR, the owner contracts with a construction manager during the design phase, before drawings are complete and before a shovel touches ground. The CMAR works alongside the owner and architect as a technical advisor, flagging constructability conflicts, modeling material cost scenarios, and identifying scope decisions that carry disproportionate cost consequences.
As design reaches roughly 60-90% completion, the CMAR establishes a Guaranteed Maximum Price (GMP), the contractual ceiling on construction costs the owner will pay. If final costs exceed the GMP, the CMAR covers the difference, barring owner-directed scope changes. The risk of overruns transfers from the public entity to the builder.
The T.F. Harper Difference: Our Open-Book Approach
CMAR reduces financial risk for owners, but the model alone doesn’t guarantee visibility into the numbers. A closed-book CMAR delivers a GMP and a summary, the owner gets a ceiling price without seeing what individual trade packages cost or which subcontractors were invited to bid. That opacity makes it difficult to evaluate whether a GMP is competitive or simply comfortable for the construction manager.
Our approach is different: every financial detail is visible to the owner throughout the process. You’re not approving a number someone else assembled, you’re watching it get built, line by line.
- Shared Bidding Process: We bid every trade package competitively, and you’re part of that process from the start. You see every bid received, not just the one we recommend, but the full field. If four electrical contractors submitted numbers and we’re recommending the second-lowest, you know that and can ask why.
- Collaborative Selection: You sit in that bid review with us. We look at each subcontractor’s price alongside their license standing, safety record, and track record on comparable jobs. The lowest number rarely tells the whole story, a subcontractor bidding $40,000 under the field but carrying a poor on-time completion rate is not a bargain. Every major subcontractor selection is yours to weigh in on before we move forward.
- Complete Cost Visibility: The GMP we hand you is a line-item breakdown, not a single number to accept or reject blind. You see the actual subcontractor bids we collected, our general conditions (superintendent time, site trailer, temporary utilities, insurance), the contingency reserve, and our fee, each as its own line. If something looks off, you can ask about it, because every number has a source.
Open-book accounting means your team can examine our subcontractor invoices at any point in the project. There are no markups buried in material costs, no undisclosed fees folded into line items. When we make a cost decision, say, substituting one roofing system for another, you know the reason and you see the numbers both ways. That level of access is what distinguishes a managed construction relationship from a traditional contract.
FAQs
How does the CMAR process help control a project’s budget?
The construction manager is at the table during design, not after. Every time the architect develops a detail, a structural connection, a curtain wall system, a mechanical specification, we’re running cost numbers against it in real time. When a design element prices out above target, we flag it before the drawings are finalized, not after bids come back. Traditional Design-Bid-Build projects routinely face redesign costs of 5-10% of the construction budget when bids exceed the estimate. CMAR’s continuous cost feedback loop is built specifically to prevent that.
What is a Guaranteed Maximum Price?
A GMP is a hard ceiling on what you’ll pay for construction. The CMAR absorbs any cost overrun beyond that ceiling, with one exception: owner-directed changes. The GMP breaks down into four categories: actual subcontractor and material costs, general conditions (on-site overhead like superintendent time and temporary utilities), a contingency reserve for unforeseen field conditions, and the CMAR’s fee. That structure means every dollar in your budget has a specific destination, and if we spend less than projected in any category, you see it in the final accounting.
What happens if the project comes in under the GMP?
Unspent funds go back to you. The return mechanism is spelled out in the contract, commonly 100% back to the owner, though some agreements include a shared-savings incentive that gives the CMAR a percentage as an efficiency bonus. Either way, the open-book accounting creates a paper trail: every invoice, every payment, every cost code. At closeout, you can verify the numbers rather than take our word for it.
Is CMAR more expensive than a traditional hard bid (Design-Bid-Build)?
On total project cost, usually not, and often less. The CMAR’s fee is a visible line item, which makes it feel more expensive than a hard-bid contract where the general contractor’s margin is embedded in the lump sum. In Design-Bid-Build, though, the owner absorbs 100% of the cost when design errors surface during construction, change orders that routinely run 5-15% of contract value on complex projects. CMAR transfers that risk to the construction partner and front-loads the problem-solving in pre-construction, where changes cost a fraction of what they cost in the field.
Is CMAR better for schools than traditional bidding?
For large or complex school construction projects, yes, CMAR typically outperforms traditional low-bid. The critical difference is timing: CMAR surfaces a detailed cost estimate before design is locked in, so you can adjust scope before you’re committed. Traditional bidding doesn’t show you that number until bids come in, by which point your options are expensive redesign or an overrun you have to absorb. The reduction in “errors and omissions” change orders alone tends to justify the CMAR management fee on school projects over $5 million.
Does an open-book process mean the owner has more work to do?
No. TF Harper manages all project coordination and subcontractor relationships, your day-to-day workload doesn’t increase. What the open-book process gives you is access: actual subcontractor bids, fee schedules, and cost-to-complete reports are available for your review at any point. Most clients check in periodically rather than daily. The structure is there if you want to verify a line item; it’s not a requirement to audit every invoice.
How does TF Harper handle change orders in a CMAR project?
Change orders fall into two categories: those caused by design errors and omissions, and those initiated by the owner. The first category drops significantly in CMAR because we review constructability throughout the design phase, finding conflicts on paper before they become field problems. When an owner-initiated change does come in, we break it down line by line: labor, materials, subcontractor costs, and the impact to the Guaranteed Maximum Price (GMP). You’re approving an itemized breakdown, not a lump-sum number.
Can CMAR be used for smaller renovation projects?
It can, though the structure of CMAR, preconstruction services, GMP development, open-book auditing, adds administrative overhead that’s difficult to justify much below $1 million. For smaller or recurring work like roof replacements, HVAC servicing, or restroom renovations, Job Order Contracting (JOC) is usually the better fit for Texas public entities: pre-established unit prices, faster mobilization, no separate competitive bid required. If you’re unsure which approach fits your project, scope and budget are typically enough to point clearly in one direction, we’re happy to have that conversation.
Building Trust, Not Just Buildings
Public owners answer to taxpayers, school boards, city councils, and community members who want to know their money was spent honestly. That accountability doesn’t end at the ribbon cutting, it follows a project for years. CMAR with genuine open-book transparency gives you the documentation to answer those questions directly: here’s what it cost, here’s why, here’s what was built for it. That’s not just sound project management. It’s how you build the kind of trust that makes the next bond measure possible.
If your organization is planning a construction project and wants a partner whose books are open for review at any point, T.F. Harper is worth a conversation. Our CMAR process is built specifically for public entities that answer to their communities, reach out and we’ll tell you plainly whether it’s the right fit for your project.
