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Fixed Price Contracts: A Comprehensive Overview for Construction Projects
7 Minute Read
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Tim Forestell
Oct 10, 2023

Fixed Price Contracts: A Comprehensive Overview for Construction Projects

No matter the project, contract discussions should be part of the first conversation you have with a potential client. There are a few types of commonly used construction contracts. They include fixed-price contracts, time and material contracts, and cost-plus contracts.

In this blog, we'll dive into the intricacies of fixed-price contracts, exploring their definition, key elements, benefits, and challenges, as well as shedding light on when and how to use them effectively.

What Exactly Is a Fixed-Price Contract?

A fixed-price contract, often referred to as a lump-sum contract, is a legally binding agreement between a client or project owner and a contractor. In this contract type, the contractor agrees to complete a specific scope of work for a predetermined, fixed price. This means that regardless of the actual costs incurred during the project, the contractor will be paid the agreed-upon sum.

To illustrate, imagine a scenario where a construction company enters into a fixed-price contract with a property developer to build a residential complex for $5 million. Even if unforeseen circumstances or cost overruns occur during construction, the contractor is still entitled to the $5 million specified in the contract. This gives the customer financial security because costs won't change over the course of the project.

Get more projects with our 7 tips on winning construction projects.

Fixed-Price Contract vs. Cost-Plus Contracts

While fixed-price contracts offer predictability and financial security, they differ from cost-plus contracts in significant ways. In a cost-plus contract, the client agrees to reimburse the contractor for all allowable project costs, including materials, labor, and overhead, with an additional fee for profit. Unlike fixed-price contracts, the final cost of a cost-plus contract can vary, making it suitable for projects with evolving scopes or uncertain requirements.

So, when should you opt for a fixed-price contract over a cost-plus contract? The choice typically hinges on the level of project certainty. If the project's scope, specifications, and requirements are well-defined and unlikely to change significantly, a fixed-price contract provides clarity and helps manage costs. In contrast, cost-plus contracts are more adaptable and suited for projects with fluid or evolving scopes.

Key Elements in a Fixed-Price Contract

Fixed-price contracts come with several essential elements that define the terms and conditions of the agreement. These elements ensure that both parties understand their obligations and responsibilities.

Identifying the Scope of Goods or Services

A clear and detailed scope of work is crucial in a fixed-price contract. It outlines the specific goods, services, or deliverables that the contractor is responsible for providing. This section helps prevent disputes by defining the project's boundaries.

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During this stage, contractors have to do their due diligence and include all of the expected costs because they will not get paid for anything that is left out of the original contract price. Having a wide range of project experience will help you not overlook these miscellaneous costs.

Determining the Price and Payment Terms

The fixed price itself is a central element. It should be clearly stated, along with any agreed-upon payment milestones or terms. This section outlines when and how payments will be made throughout the project. Including these terms in your contract will help contractors have good cash flow during the project and reduce the financial risk.

Essential Agreement Terms and Clauses

The contract should include standard terms and conditions, such as dispute resolution mechanisms, warranties, and termination clauses. These terms help manage expectations and address potential issues that may arise during the project.

Addressing Breach of Contract and Liability Limitations

In the unfortunate event of a breach of contract or dispute, this section specifies the consequences, remedies, and liability limitations for both parties.

Inclusion of Warranty Information, Disclaimers, and Return Details

Any warranties or guarantees related to the project's quality or components should be clearly documented. Additionally, disclaimers and instructions for handling defects or issues may be included to guide the parties involved.

Factors to consider in fixed price contracts, project scope clarity, potential project chnages, risk allocation and predictability

Benefits and Drawbacks of Fixed-Price Contracts

Fixed-price contracts offer a set of advantages and disadvantages that must be considered when choosing this contract type for a construction project.

The Perks of Going for Fixed-Price Contracts

Fixed-price contracts offer several advantages to both clients and contractors. Firstly, they provide predictable costs, allowing clients to budget more accurately since they know the project's total cost from the outset. Secondly, these contracts allocate the risk of cost overruns to contractors, which incentivizes them to manage projects efficiently and within the agreed budget. Lastly, the clarity and certainty provided by well-defined scopes of work and pricing terms reduce ambiguity, ultimately minimizing the potential for disputes during the course of the project.

Many clients and customers prefer fixed-price contracts because of the financial safety net they provide. However, during times when material prices are fluctuating or experiencing shortages, time and material contracts may be a better option.

Potential Challenges and Hurdles to Watch Out For

Despite their advantages, fixed-price contracts come with their share of challenges. One notable drawback is limited flexibility; these contracts may not easily accommodate changes in project scope or requirements without modifications, potentially resulting in additional costs for clients. While change orders can be made, they require a lot of transparency and trust with the customer.

Additionally, contractors face the risk of underestimating project costs, which can lead to financial losses if unexpected expenses arise during construction. Dealing with scope creep, where changes or additions to the project's scope emerge, can be particularly challenging within the confines of a fixed-price contract, as it may require significant negotiation and adjustments to the initial agreement.

That's why it is so important to be thorough when putting together the original bid or contract. Any costs that are excluded will cut into the profit margin of the contractor.

Discover our 5 tips on keeping construction projects within budget.

Examples of Fixed-Price Contracts

Let's take a closer look at some real-world examples of where fixed-price contracts can be applied:

  • Residential Construction: Building a single-family home or an apartment complex based on a predetermined contract price.

  • Infrastructure Projects: Constructing bridges, roads, or tunnels with a fixed budget.

  • Commercial Developments: Developing shopping centers, office buildings, or warehouses under fixed-price agreements.

When Are Fixed-Price Contracts Most Appropriate?

Fixed-price contracts are ideal for projects with clear scopes, minimal expected changes, and clients seeking budget predictability. They allocate the risk of cost overruns from clients to contractors, providing financial stability.

However, these contracts aren't suitable for projects with fluid scopes, high uncertainty, or frequent design changes that require flexibility. They are also not popular during periods of cost inflation or fluctuation. A recent example of this was during the COVID-19 pandemic when supplies were limited and costs were unpredictable. Understanding the project's nature is crucial when deciding if a fixed-price contract is the right choice.

Managing the Scope of Work in Fixed-Price Contracts

Effective scope management is crucial for the success of a fixed-price contract. Start by creating a detailed scope of work document that covers project specifics comprehensively. Implement a robust change control process to handle scope modifications with proper documentation and cost adjustments. Maintain regular and transparent communication between the client and contractor to address any scope-related issues promptly, ensuring a smooth project flow.

Check out our project management checklist.

Overseeing Fixed-Price Contract Projects

Managing projects governed by fixed-price contracts comes with its own set of challenges and complexities. Here's a closer look at the dynamics involved:

Challenges in Managing Fixed-Price Contracts

Potential cons of fixed price contracts, Limited adaptability, Contractors at risk of underestimating prices, Change orders can be difficult to manage

Adhering to the fixed budget demands vigilant cost control and monitoring to ensure expenses stay in check. Managing scope changes effectively without undermining profitability presents a notable challenge in fixed-price contracts. Simultaneously, maintaining quality standards is vital to ensure client satisfaction and project success.

The Role of Technology in Simplifying Management

Embracing technology can greatly enhance project management efficiency within fixed-price contracts. Employing digital contract management tools and software facilitates contract creation, tracking, and overall management, streamlining administrative processes.

Additionally, integrating accounting software aids in the meticulous monitoring of project expenses and financial performance. To further enhance project coordination, project management software offers the capability to schedule tasks, monitor progress, and foster effective communication among stakeholders.

Advantages of Automating Workflows for Fixed-Price Contracts

Automation plays a pivotal role in simplifying the intricate workflows inherent in fixed-price contracts. By automating various processes, such as documentation and administrative tasks, overall project efficiency is significantly improved.

Additionally, automation enhances accuracy by reducing errors in budgeting, invoicing, and reporting. Most notably, it provides real-time insights into project data, ensuring that stakeholders have access to the most up-to-date information for informed decision-making throughout the project's lifecycle.

Learn more about budgeting for contractors to maintain profit margins.

Why Digital Contract Management is Crucial for Fixed-Price Contracts

In today's fast-paced construction environment, using digital tools and software is crucial for efficient contract management. Digital contract management offers several benefits, including:

  • Enhanced Collaboration: Faster collaboration among project stakeholders, enabling seamless communication and document sharing.

  • Streamlined Workflow: Simplify contract creation, approval, and execution processes through automated workflows.

  • Document Tracking: Easily track contract revisions, changes, and compliance throughout the project's lifecycle.

  • Data Security: Ensure the security of sensitive contract-related information through digital encryption and access controls.

Best Accounting Software for Fixed-Price Contracts

Choosing the right accounting software can significantly impact the financial management of fixed-price contracts. Some top accounting software options include QuickBooks, Xero, and FreshBooks, all of which offer features tailored to construction and project accounting.

Best Project Management Software for Fixed-Price Contracts

Project management software plays a vital role in tracking progress, managing tasks, and facilitating communication. Consider popular options like Microsoft Project, Procore, or Buildertrend for effective project management.


Whether you're embarking on a construction project governed by fixed-price contracts or exploring equipment rental options for your endeavor, DOZR is your trusted partner. Explore our wide range of construction equipment listings and rental solutions to propel your project to success.

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Tim Forestell
Tim Forestell is one of DOZR’s co-founders and CCO. Tim got started in the industry as VP Operations for Forestell Landscaping before founding DOZR with Kevin and Erin. Aside from the amazing team at DOZR, his favourite thing about DOZR are the customers. Working with DOZR renters every day gives him a peek at the evolution of different projects and hearing stories about projects being developed from start to finish.
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