Substantial Completion Vs Final Completion: Learn Everything You Need to Know About Both! 

It is extremely important to learn the distinction between substantial completion vs final completion if you are to effectively handle the progress of your dream project! It could be the construction of your house, office, big commercial complex, mall, or any other building. 

The concept of substantial completion is key when it comes to the proper discharge of contractual obligations on the part of the contractor, the release of a large portion of the builder’s fees or retainage money by the owner, shifts in maintenance obligations, etc. So, let’s understand the major difference between these two types of completion in a project in detail.

Substantial Completion Vs Final Completion

The primary difference between substantial completion vs final completion is that of almost done and completely done! The former marks a completion where minor tasks are still pending (thus almost done, 98 to 99%), while the latter certifies a full and final conclusion of the construction project (100%). 

Learn the difference with an example. 

• Substantial Completion: Suppose your house is being constructed. The structure is complete along with all the major systems, such as electricity, plumbing, HVAC, etc. Thus, it has reached a stage in construction where the house is fully functional and safe to be occupied. But certain minor tasks, such as missing paint, drywall dents, loose door handles, etc., are still left to be fixed as part of the corrective work. This is the situation where your house can be certified to be substantially complete.
• Final Completion: On the other hand, when it comes to final completion, even such insignificant minor tasks are not pending. The project is fully complete and ready to be used by the project owner in its entirety. 

That is the key and the only major difference between these two concepts or types of completion. 

What is Substantial Completion in Construction?

The term substantial completion marks an important stage in the construction process. It means that a project is almost done and ready to be used by the owner. But it is not completely done yet. There are certain minor tasks still pending to be carried out by the contractor. 

Do you know? What is Final Completion?

These few minor tasks are called punch list items in industry language.

Key changes that occur when the project reaches this stage of completion are as follows. 

• Completion of major systems in the building, such as electrical, HVAC, plumbing systems, etc. 
• Installation of all the essential fixtures and key finishes 
• Compliance with safety-related rules and building codes 

Points to note: Along with these, other changes you will notice as the project owner are provided below. 

• The owner becomes ready to assume responsibility for the property. 
• Your warranty periods often begin at this level of completion. 
• Permits for occupancy may be granted.
• This is also when partial payments or retainage amounts are released.

The concept of substantial completion applies equally to all types of houses. In other words, all residential properties reach two important stages in completion: first, substantial, and then secondly, final. 

Before we move to the next section, make sure that you don’t run into the same problem as the following Redditor has! 

Handy tip: If you are new to handling any type of construction project, don’t forget to research well before hiring anyone. That will help you deal with them and their work better!

Also Read: Schedule of Values (SOV) in Construction: Its Definition, Process, Components, Templates, & More!

What is Final Completion? 

When a construction project reaches this stage, it is finished in its entirety. There is nothing more left to be done to make it complete in any sense. All the major systems are already put together, and minor finishes are accomplished as well. Hence, the project has reached its conclusion in short order. 

At this stage, all the corrective work has also been delivered so that there is nothing left pending on this front, either. Before this final completion, a joint and thorough assessment is often conducted by the owner and the contractor, along with other key stakeholders, to make sure that the construction has truly reached its completion as per the prevailing contractual obligations. 

Key insights: Substantial completion is never done if even one of your major systems, wholly or in part, is pending. For all construction types, you must remember this rule, or else you might end up paying completely for an incomplete project.

What Does Substantial Completion Mean for Owners?

After the substantial completion definition, let’s briefly see what this completion means for owners. The most important thing is that, at this stage, the owner can start to use their project almost completely. In other words, the construction becomes ready for its intended use. The building is fully safe and functional even though minor work is still going on. 

Additionally, this is also the stage where most of your warranties start to operate. You become more responsible for your build, payments related to its development, and other obligations.    

What Does Substantial Completion Mean for Contractors?

Substantial completion meaning also means that it is a major stage for contractors. That is when they receive a large portion of their service charges from project owners as per the agreed terms. After receiving their payments, the bulk of the contract teams wrap up the build as soon as possible. So, it can be used for its intended purpose in due time. 

Handy tip: Learn about all the major steps to building a house in advance if you have never dealt with the construction of a house before. That will help you learn if your substantially finished house is still lacking some substantial features!!! 

How is Substantial Completion Defined?

The definition of substantial completion is governed by the contract between the project owner and the builder. Contract documents are where the exact conditions for constituting substantial completion are detailed. Additionally, who will certify this completion is also specified in the same documents.   

Do you know? The American Institute of Architects (AIA) and Canadian Construction Documents Committee (CCDC) provide widely accepted standard definitions and forms in this regard.

The architect or project owner, individually or jointly, as the case may be, inspects a construction project and checks all the accomplished features against key conditions as defined in the pre-construction contract to constitute substantial completion. And, if the project stands up to the mark, a certificate of substantial completion is issued. Afterwards, the project becomes ready for occupancy. 

Point to note: The date specified on this certificate also affects when the concerned contractors will finish the remaining but minor work or wind up all the other final touches.

Also Read: What is Architecture?

Contract Documents and Compliance 

The construction contract deals with substantial completion in construction. It sets clear definitions, specifies code and regulation compliance, and defines responsibilities & obligations in detail. Both parties have to ensure compliance with the terms of this mutual agreement. 

Consider the following key points around this primary project milestone.  

• Clear definitions: The entire project is divided into various stages of completion with tasks and tentative dates of completion. When each part/task of the build will be completed is specified along with other key terms and conditions. These remain binding on either party until all obligations are met. 

Insights: The only thing that is avoided in a construction contract is ambiguous language or terms that might hamper desired progress and cause costly delays.

• Code and regulation compliance: Whether a construction can be called substantially complete or not also depends on its compliance status. The final build has to be code-compliant, meeting safety standards and local regulation requirements properly. Non-compliance means the house or commercial structure is still substantially incomplete.  
• Separation of responsibilities: Contractors are bound to carefully complete projects substantially. Then, project owners or qualified architects/engineers initiate the verification process. 
• Triggered obligations: These are changes that take place as soon as the verification is complete and the project is declared to have been substantially completed. Your warranties start to operate, insurance responsibilities transfer, and final processes related to payments begin to take place. 

All these points remain the same in commercial as well as residential construction. 

What is the Certificate of Substantial Completion?

A certificate of substantial completion is an official paper or document that confirms that a project is nearly finished, as only minor tasks are pending. It proves that the construction work meets all contractual and legal requirements. Thus, the structure is ready for occupancy.  

In this context, AIA Contract Documents make G704: Certificate of Substantial Completion available as a ready-to-use form. Many professionals use this document to issue the certificate in no time if the project meets all the key eligibility criteria for substantial completion. 

Note: This is a paid document. You cannot use it for free. If you want to use it, you will have to make a payment first and then obtain the form. The current price is approximately $60. 

Who Issues the Certificate of Substantial Completion?

The project owner or architect/engineer issues this certification. Pay attention that it is a document that must be issued once you are completely satisfied that your project is almost done and genuinely only minor finishes or tasks are left. 

Never provide your permission even if one of the major house or building systems, like HVAC or plumbing, is pending either partially or completely. That is where the line between substantial completion vs final completion becomes clear! Substantial completion means all the substantial aspects are complete.  

What Does the Certificate of Substantial Completion Contain?

This document contains key project details along with the responsibilities of each party. In short, the major particulars are as follows. 

• The name of the project, parties involved, and the accurate address details 
• The official date when the project was substantially completed, triggering warranties and insurance changes 
• All the details of the pending minor or corrective tasks 
• Details on who will handle the financial obligations related to any pending work, security issues, or maintenance 
• Signatures of the owner, contractor, and engineer/architect to confirm the agreement 

These are the major types of details contained here! Finally, let’s move on to the completion certificate in a construction project. 

Also Read: Construction Safety Checklist: A Brief Walking Through OSHA-Supported Safety Guidelines!

Talking About the Final Completion Certificate 

A certificate of completion is a formal construction document that is issued by a contractor, an architect, or the project owner. It certifies that a project is finished and thus all the contractual obligations of the builder have come to an end. The project owner is supposed to make all the pending payments at this stage. 

This document outlines the names and addresses of the owner, contractor, and architect, along with key project information. The total construction cost and any sales tax paid by the contractor are also included within the scope of this certificate. 

Conclusion 

The major difference between substantial completion vs final completion is that of pending minor tasks. If you have any confusion yet, consider the following trick to test if your project is substantially complete! Ask yourself. If your builder leaves the construction and is not to work on it anymore from a particular point on, will you be able to fully use all the features of the house and live safely inside it as per your expectations in the first place? If your answer is yes, your house is substantially complete! 

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