Episode 138:

Hello and Welcome to the Part3 with me podcast. 

The show that helps part 3 students jump-start into their careers as qualified architects and also provides refresher episodes for practising architects. I am your host Maria Skoutari and this week we will be talking about the Cost Plus Contract. Todays episode meets PC5 of the Part 3 Criteria.

Make sure to stay until the end for a case study example. 

What is a Cost Plus Contract in Construction:

A cost-plus contract, also known as cost-reimbursement contracts, provide reimbursement for all of the costs associated with a construction project, plus a fee to account for the contractor’s overhead and profit. 

Clients tend to select this type of contract when they want to get a project moving quickly or when  the scope of work is unclear which makes it difficult to estimate the total cost. 

Essentially, under the cost plus contract, the client agrees to pay the actual costs incurred by the contractor plus the additional fee for their overheads and profits. Something clients need to bear in mind is that cost plus contracts may ultimately lead to a higher cost of the overall works than it would be with other fixed cost contract types, placing a higher financial risk to the client. 

It is a faster route to completion and provides greater quality control from the client side as they tend to have more involvement and control over project decisions and changes, but at the expense of cost uncertainty. This type of contract bears less risk to the contractor and is easier for them to negotiate because of this. 

Cost plus contracts are generally most suitable when:

So the Components of the Cost Plus Contract includes:

That they require open-book accounting with the contractor providing detailed documentation of all expenses and they must be transparent with the client by providing them with regular updates regarding the costs. This includes direct costs, indirect costs and Contractors Profit Margin.

Direct Costs relate to all costs directly associated with construction activities such as labour, materials, and the subcontractor costs. It essentially refunds the contractor for actual wages, salaries, and benefits of direct workers, as well as material costs, direct supplies, equipment, and additional components vital to executing the project. 

Now in terms of Indirect Costs, these include overhead costs such as general and administrative expenses of the business and insurance.

And lastly you have the contractors profit margin, which covers the contractors income.This can either be a flat rate, a percentage of actual costs or a custom amount agreed between the contractor and clients before the works commence. 

When using cost plus contracts, several legal and contractual factors should be considered:

There are five different types of Cost Plus Contracts:

Cost Plus Award Fee (CPAF):

The Cost Plus Award Fee (CPAF) contract which provides for a contractor’s fixed price in addition to the reimbursable costs. The award fee relates to how the client assesses the contractor’s ability to meet the predetermined performance criteria. Cost Plus Award Fee contracts are ideal for construction projects with demanding deadlines and objectives like attaining cost or energy efficiency, strict safety standards, and exceptional craftsmanship.  For example, a contractor may use a Cost Plus Award Fee contract to bid for a transportation hub project with tight timelines and safety standard targets. A penalty fee may apply if the contracting team cant complete the project on time and within budget.

Cost Plus Fixed Fee (CPFF)

The Cost Plus Fixed Fee contract (CPFF) reimburses the contractor for the actual costs plus a fixed price. This fixed fee remains constant regardless of any unanticipated costs. 

Cost Plus Fixed Fee contracts are suitable when the client prefers a straightforward approach in reimbursing the cost of the project and ensuring the contractor receives a specified remuneration, especially for projects with uncertain scope or design. 

Cost Plus Incentive Fee (CPIF)

Cost Plus Incentive Fee (CPIF) is similar to Cost Plus Award Fee contract. In that both construction contracts cover the final cost and a negotiated fee or profit. However, whereas the award fee in a Cost Plus Award Fee construction project relies on the client’s assessment of the contractor’s performance, the Cost Plus Incentive Fee has an incentive fee for meeting or exceeding mutually agreed targets. Meaning, preset performance targets are vital in Cost Plus Incentive Fee contracts and if the contractor abides by the rules and provisions specified in the contract, they can earn a significant incentive fee. However if they fail they may incur a penalty fee.

Cost Plus Percent of Cost (CPPC)

Cost Plus Percent of Cost (CPPC), also referred to as Cost Plus Percentage Fee (CPPF), reflects the contractor’s profit as a percentage of the actual project costs. Meaning the contractor can recover any expenses that exceed the budgeted direct and indirect costs, provided they can justify the fees as necessary for the successful completion of the project.

Clients should ensure they engage reputable contractors known to execute complex projects using these contract types, as they rely on mutual trust to complete the project professionally and accurately, with minimal cost overruns. 

Cost Plus Fixed Rate

Cost Plus Fixed Rate or Cost Plus Fixed Percentage (CPFP) is a contract type that reimburses the contractor a fixed percentage of the estimated cost as profit. Meaning, past costs incurred are assessed and used to predetermine the contractors labour rates. 

It is a variation of the Cost Plus Fixed Fee contract, pinning the contractor’s profit on the actual project costs while cushioning the client against excessive cost overruns. 

Like the cost plus percent-of-cost (CPPC), the Cost Plus Fixed Percentage contract requires working with reputable contractors who keep tabs on their project costs.

So what are the advantages and disadvantages in using cost plus contracts:

Starting with the advantages: 

They are great alternative contracts to fixed price contracts. On the client side, they provide:

On the contractor side, they provide:

Cost Plus contracts also provide flexibility in Project Management and allow for adjustments, meaning allowance for changes to the project scope, budget and timeline to adapt to unforeseen challenges and uncertainties. 

Now in terms of the disadvantages: 

On the client side, there is:

On the contractor side, it:

How do Cost Plus contracts compare to Fixed Price Contracts:

A fixed price contract or lump sum agreement reimburses the contractor for a fixed price for the entire project determined during the bidding process. Whereas, a cost plus contract compensates the contractor based on the true costs and a profit margin.

Additionally, the client assumes most of the risk under a cost plus contract. Under a fixed price contract, the contractor bears unexpected costs and financial risk.

A cost plus contract also allows for greater flexibility in response to the project uncertainties. While altering a fixed price contract may call for fresh negotiations between the contractor and client.

Under fixed price contracts, the contractor is motivated to save on costs and maximise profit from the fixed price. Whereas under a cost plus contract, they are less keen in controlling costs and in some instances they may inflate the costs to earn a higher percentage of the cost as profit. 

Finally, a cost plus contract is appropriate for complex projects with uncertain scopes and timelines. A fixed price contract works best for straightforward, predictable projects requiring minimal record keeping.

Therefore, when using a Cost Plus Contract, its good practice:

To sum up what I discussed today: