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Types of Commercial Construction Contracts

Choosing the right contract type for a commercial construction project is crucial to ensuring its financial success and alignment with the owner’s goals. There are several budget structures commonly used in the industry, each with its own set of advantages, disadvantages, and ideal use cases. In this post, we’ll outline the most common budget types, along with their pros, cons, and scenarios where they work best.

1. Fixed Price (Stipulated Sum / Lump Sum)

Overview: A fixed price contract is one where the general contractor provides a set cost for the entire project to be built based on the construction documents being used for contracting/budgeting – typically what is known as the “permit set” of plans. Because of the plans, these types of budgets are based on a well-defined scope of work and should be “all inclusive,” accounting for most of the expected costs.

Pros:

  • Cost Certainty: The owner knows the total cost upfront, which helps with financial planning and reduces the risk of budget overruns.
  • Simplified Management: The general contractor is responsible for managing costs, making this approach straightforward for the owner.
  • Progress Billing: general contractors typically maintain a “schedule of values” for the project broken down into cost buckets defined by the construction “divisions” (CSI Master Format), which is updated each billing cycle to account for the percentage of each line item completed since the previous billing period. This allows each side to track billing progress and easily identify any billing errors based on progress made in the field.

Cons:

  • Limited Flexibility: Changes or scope modifications can be costly, as they often lead to change orders that need to be executed to adjust the original budget.
  • general contractor Risk: The general contractor assumes much of the financial risk, which may lead to higher initial pricing to account for unforeseen costs.

Typical Use Cases:

  • Projects with well-defined plans and scope where changes are likely to be limited (Design-Bid-Build projects). 
  • Owners who want predictable costs and minimal risk of budget overruns.

2. Cost-Plus

Overview: In a cost-plus contract, the owner pays for the actual cost of materials and labor plus an agreed-upon fee for the general contractor. This fee can be a percentage of costs or a fixed amount. Typically, a cost-plus budget is structured so that the contractor must submit all costs to the owner for approval before anything is purchased, subcontracts are written, or labor is engaged onsite. 

Pros:

  • Flexibility: Changes to the scope can be easily accommodated without the need for extensive renegotiation.
  • Transparency: The owner has full visibility into the actual costs of the project.

Cons:

  • Budget Uncertainty: The final cost is not fixed, and the project can end up costing more than initially expected.
  • Owner Involvement: The owner needs to be actively involved in monitoring costs to ensure that spending remains reasonable.
  • Project Efficiency: Because of the need for owner approval on everything, cost-plus projects are typically slower than ones where the general contractor makes all the purchasing decisions. 

Typical Use Cases:

  • Projects where the scope is uncertain or likely to change.
  • Complex renovations or projects with many unknowns.

3. Time and Materials (T&M)

Overview: In a time and materials contract, the owner pays for actual labor time and materials used, often with an added markup for the general contractor. The main difference between T&M and Cost-Plus is the owner does not approve costs ahead of time, but rather, they are submitted by the general contractor after they have been incurred. 

Pros:

  • Adaptable: This budget type is ideal for projects with an undefined scope, allowing work to proceed quickly, without a fixed cost.
  • Simplicity: The general contractor charges based on the resources used, making it easy to start work quickly.

Cons:

  • No Cost Limit: There is no cap on the cost, meaning the final budget could easily exceed initial expectations.
  • Owner Oversight: The owner must closely monitor the project to prevent excessive spending.

Typical Use Cases:

  • Projects between trusted partners
  • Small projects, maintenance work, or projects with high uncertainty.
  • Situations where work must begin before a detailed scope can be developed.

4. Guaranteed Maximum Price (GMP) / Not to Exceed (NTE)

Overview: A GMP or NTE budget is a type of Cost-Plus contract, but it includes a cap on the total project cost. The general contractor guarantees that the cost will not exceed a specific maximum amount.

Pros:

  • Cost Cap: The owner gains flexibility while still having the assurance that costs will not exceed a certain limit.
  • Risk Sharing: Both the owner and general contractor share some financial risk, encouraging collaboration to stay within budget.

Cons:

  • Complex Negotiations: Establishing the GMP requires careful negotiation and a well-developed project scope to avoid disputes later.
  • general contractor Contingency: The general contractor may build contingency into the GMP to cover their risk, which can make the price higher compared to cost-plus without a cap.

Typical Use Cases:

  • Projects where the owner wants cost certainty but needs some flexibility for potential changes.
  • Large-scale commercial builds where risks need to be managed effectively.

Choosing the Right Budget Type

Selecting the appropriate budget type depends on several factors, including the complexity of the project, the level of uncertainty in the scope, and the owner’s risk tolerance. Fixed price budgets offer predictability, while cost-plus and GMP budgets provide flexibility. Time and materials are best for projects where adaptability is key.

A good general contractor can help you navigate these options, ensuring that your budget type aligns with your project goals and risk profile. By understanding the pros and cons of each approach, owners can make more informed decisions that ultimately lead to a successful project outcome.

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