Overview: 

Learn what the difference between fixed price and cost plus construction contracts look like. Why a fixed price bid can give homeowners greater clarity, control, and peace of mind. 

When planning a remodel, home addition or custom home, one of the most important decisions you will make is how the work will be priced. Two common approaches are fixed price and cost plus contracts. Although both can be used successfully, they create very different experiences for the homeowner.

At Kluever’s Quality Construction, we are a fixed price contractor because we believe our customers deserve to understand what they are buying and what it will cost before construction begins. 

What is a Fixed Price Bid?

A fixed price bid establishes an agreed price for a clearly defined scope of work. Before the project starts, the contractor reviews the plans, evaluates the labor and materials required, gathers subcontractor pricing, and prepares a detailed proposal.

Once the scope and price are approved, that is the price of the project unless the customer requests a change or an excluded or unforeseen condition arises that is addressed in the contract.

For homeowners, the biggest advantage is certainty. You know what work is included, what materials or allowances have been selected, and how much the agreed project will cost.

What is a Cost Plus Contract?

Under a cost plus contract, the homeowner pays the actual cost of labor, materials, subcontractors, and other project expenses, plus an additional contractor fee or percentage.

This approach can offer flexibility when the full scope is difficult to define. However, the final price is not known when construction begins. The homeowner may start with a target budget or a “not-to-exceed” amount, but selections, labor hours, material costs, and unexpected items can continue to affect the total.

In practical terms, the homeowner carries more of the financial uncertainty.

The Benefits of Fixed Price

1. You Know the Cost Before Work Begins

A fixed price proposal gives you a clear number for the agreed scope. It makes it easier to arrange your financing,  plan for your payment terms, and make educated decisions before committing to the project. Instead of watching costs accumulate throughout construction, you begin with a defined price and a shared understanding of what is included.

2. The Contractor is Responsible for Accurate Estimating

With cost plus pricing, added labor and material costs are usually passed on to the homeowner. With a fixed price bid, the contractor is responsible for carefully reviewing the project and building those expected costs into the proposal. If the contractor underestimates labor or overlooks an ordinary cost that is necessary to complete the agreed scope, the homeowner should not automatically receive a larger bill. That estimation responsibility belongs with the contractor. 

3. Efficiency Benefits Everyone

In a cost plus agreement, more labor hours and higher project costs can also increase the contractor’s compensation, depending on how the fee is structured. A cost plus agreement incentivizes the contractor to milk the job!

A fixed price contractor has a strong incentive to plan the work, coordinate trades, order materials, and keep the project moving efficiently. That does not mean cutting any corners, it means completing the promised work correctly while managing the project responsibly.

4. Fewer Financial Surprises

Construction already involves so many decisions. Homeowners shouldn’t also have to wonder what the final invoice will be. 

The purpose of a detailed fixed price bid is to eliminate the uncertainty by defining the scope, price, selections, allowances, exclusions, and payment schedule in advance. If the homeowner decides to add or change something in the middle, a written change order will explain both the added work and price before that work proceeds.

When Can a Fixed Price Change?

Fixed price doesn’t mean the scope can change without affecting the cost. A price may need to be adjusted when:

• Homeowner requests additional or different work.
• Concealed conditions are discovered that could not reasonably have been identified before construction, such as hidden water damage or unsafe wiring inside a wall.
• An allowance is exceeded because the homeowner selects a higher-priced item.
• The contract identifies a specific exclusion, contingency, or condition that affects the work.
• Building officials, engineers, or other authorities require work outside the original scope. 

These situations should be documented and communicated clearly. At KQ Construction, changes to the agreed scope are handled through written change orders so the customer can understand the cost and approve the work.

Why KQ Construction Uses Fixed Price Bids

We want our customers to feel confident before construction starts—not anxious about what the project may ultimately cost. Our fixed price process is designed to provide a clear scope, transparent expectations, and a dependable price for the work we agree to perform.

Developing a fixed price document does take more initial investment and time than a cost plus agreement. No construction contract can eliminate every unknown, especially when remodeling an existing home. However, a well-prepared fixed price bid places the responsibility for estimating and planning with the contractor. 

If you are planning a remodel or construction project in New Braunfels, Texas or the surrounding Central Texas area, KQ Construction would be honored to discuss your goals and prepare a clear, detailed bid for you and your family!

Cheers,

Zack