Surety Bonds and Liens for Construction Projects: Understanding Your Rights and Obligations

Dealing with the complexities of construction projects requires not only technical expertise but also a deep understanding of the legal instruments designed to protect the financial interests of all parties involved. Among these, construction liens and bonds play a crucial role in ensuring fair compensation and adherence to contractual obligations. This article delves into the intricacies of construction liens—legal claims against property for unpaid work or materials—and construction bonds—financial guarantees of contract fulfilment. By exploring their functions, differences, and the legal rights and obligations they entail, we aim to provide a comprehensive guide for stakeholders in the construction industry. Understanding these legal tools is essential for managing risk, securing payments, and navigating the disputes that can arise in the complex landscape of construction projects.

Table of Contents

What is a Construction Lien or Mechanics Lien?

A lien represents the legal right granted to an individual or corporation to retain possession of property—either real property, such as real estate and buildings, or chattels, which are movable items like construction materials—as collateral for the fulfillment of an obligation by another party. This right remains in effect until the debt or obligation is fully satisfied.

Liens are classified into various types, each with distinct characteristics and enforcement mechanisms. Some liens necessitate that the lienholder physically possess the property to enforce the lien and may not automatically grant the right to sell the property to recover the owed amount. Conversely, other liens do not require possession of the property yet confer the right to sell the property under specific conditions to satisfy the debt.

The creation of a lien is not inherently dependent on a contractual agreement, although contracts can stipulate lien rights. It’s crucial to understand that merely performing work or providing services does not inherently entitle one to a lien. Liens can be attached to:

  • Specific pieces of property that have been worked upon, known as ‘specific’ or ‘special’ liens, or
  • All the property of the owner, irrespective of which parts were directly worked upon, termed ‘general’ liens.

Types of Liens

Liens are broadly categorised into four main types:

  • Common Law Possessory Liens: These can be either general, affecting all of an owner’s property, or specific/particular, targeting specific property items that have been worked on.
  • Equitable Liens: These are imposed by courts to ensure fairness, especially when the formal criteria of other lien types are not met but justice demands a lien.
  • Statutory Liens: Created by legislation, these liens grant rights based on specific statutes, often without the need for possession of the property.
  • Contractual Liens: These arise from agreements between parties, where the terms of the contract explicitly grant lien rights under certain conditions.

Rights and Obligations Under Construction Liens

In New South Wales, the Building and Construction Industry Security of Payment Act 1999 (the SOP Act) plays a pivotal role in governing the rights and obligations associated with construction liens. This legislative framework is designed to ensure that entities engaged in construction work or supplying related goods and services are rightfully entitled to payment and possess mechanisms for recovery if necessary.

Rights Under the SOP Act

  • Right to Progress Payments: Individuals or entities performing construction work or supplying related goods and services under a contract are entitled to receive progress payments.
  • Right to Issue a Payment Claim: You have the authority to issue a payment claim to the debtor (the respondent), specifying the amount claimed for the work or goods/services provided.
  • Right to Receive a Payment Schedule: Following a payment claim, the respondent must furnish a payment schedule within 10 business days, detailing the proposed payment amount, which could be the full amount, a portion, or none at all.
  • Right to Adjudication: In case of a dispute regarding the payment amount, you can seek adjudication to resolve the issue.
  • Right to Suspend Work: Should the payment not be made by the due date, you are permitted to suspend work, provided you give written notice in advance.
  • Right to a Charging Order: If an adjudication decision is in your favor and the respondent still fails to pay, you can request a court for a charging order against the respondent’s property for the amount due.

Obligations Under the SOP Act

  • Obligation to Serve Payment Claims Correctly: It’s imperative to ensure that payment claims meet the SOP Act’s requirements in terms of detail provided and the timing of submission.
  • Obligation to Follow Adjudication Process: When engaging in the adjudication process, adherence to the SOP Act’s procedural stipulations, including application and response timelines, is required.
  • Obligation to Carry Out Work as Agreed: The contracted work must be executed in accordance with both the agreement and legal standards. Non-compliance could jeopardize your entitlement to payment.
  • Obligation to Respect the Outcome of Adjudication: The adjudicator’s decision is binding on both parties, though it can be challenged further in court.
  • Obligation to Provide Notice Before Suspending Work: Prior to suspending work due to non-payment, the stipulated notice must be issued as prescribed by the Act.

Understanding and adhering to these rights and obligations under the SOP Act is crucial for parties involved in the construction industry in NSW, as it ensures that payments are made fairly, and disputes are resolved efficiently.

What is a Construction or Surety Bond in the Construction Industry?

A construction bond, also known as a contract bond or a surety bond, serves as a safeguard for the project owner against potential financial losses stemming from non-payment, underperformance, contractor default, or warranty issues. It’s a financial instrument that guarantees the contractor (the bond holder) will adhere to the terms of the construction contract. Unlike insurance policies that protect the policyholder, construction bonds are purchased by contractors to protect the project owner. If the contractor fails to meet the obligations of the contract, the project owner can make a claim against the bond to recover the bond amount. The surety company backing the bond then has the responsibility to ensure the project is completed according to the contract terms.

The construction bond involves three key parties:
Principal: This is the entity (typically the general contractor or a subcontractor) that purchases the bond and is responsible for fulfilling the contract obligations.
Surety Company: This entity provides the bond and commits to completing the contract or compensating the project owner should the principal fail to fulfill their contractual duties, in which case one can file a claim with the surety company.
Obligee: This is the party that benefits from the bond’s protection, usually the project owner, a public agency, or any entity requiring the bond for a construction project.

Construction bonds are particularly crucial on large-scale projects as they offer an additional layer of financial security beyond what is stipulated in the construction contract. Resolving contract breaches can be costly and time-consuming, making bonds a preferred option for ensuring contract compliance and project completion. Surety companies underwrite contract bonds based on the contractor’s financial standing, the nature of the work, existing work backlogs, and past performance records, ensuring that only financially stable and reliable contractors are bonded for projects.

Types of Surety Bonds

Surety bonds vary in type, each serving distinct roles and offering unique benefits to the project’s stakeholders. Here’s an overview of the key types of bonds used in construction:

  • Bid Bonds: These ensure that contractors commit to their bids and enter into contracts if selected. They protect project owners against any additional costs if a contractor withdraws after winning a bid or fails to sign a contract.
  • Performance Bonds: Commonly used, these bonds guarantee that contractors will complete the project as per the contract’s specifications. If a contractor defaults, the bond covers the cost of completing the project through another contractor.
  • Payment Bonds: Aimed at protecting subcontractors and suppliers, payment bonds ensure they are paid for their services and materials. If a contractor fails to pay, these parties can claim the bond to receive their dues.
  • Maintenance Bonds: These are activated post-completion, guaranteeing that contractors fix any defects during a specified maintenance period. Project owners can claim these bonds to cover repair costs of any identified issues.
  • Subdivision Bonds: Required for large-scale projects like subdivisions, these bonds ensure the completion of necessary infrastructure, such as roads and utilities. Non-compliance allows project owners or municipalities to claim the bond for completing the work.
  • License and Permit Bonds: Necessary for obtaining legal permits and licenses, these bonds protect the public by ensuring contractors adhere to industry regulations and standards.

Rights and Obligations Under Construction Bonds

In New South Wales, the rights and obligations under a construction bond are intricately linked to the specifics of the bond agreement and the underlying construction contract. These bonds serve as a financial safety net for the client, ensuring protection against losses due to the contractor’s failure to meet contractual obligations. Here’s a comprehensive look at the rights and obligations associated with construction bonds:

Rights Under a Construction Bond

  • Client’s Right to Claim: The client or principal holds the right to claim compensation through the bond if the contractor does not fulfill the contract terms. This encompasses situations like project delays, substandard work, or any other contractual breaches.
  • Contractor’s Right to Dispute: The contractor is entitled to dispute a bond claim if they consider it unjustified, providing an opportunity to address any alleged breaches or to explain mitigating circumstances.
  • Subcontractor’s Protection: Bonds may also offer protection to subcontractors, suppliers, and laborers, ensuring they receive payment for services and materials, depending on the bond’s structure.

Obligations Under a Construction Bond

  • Provision of the Bond: It is typically the contractor’s responsibility to secure and provide the bond to the client, a condition often required for the initiation of construction work.
  • Compliance with Contract Terms: Both parties, the contractor and the client, must adhere to the construction contract’s stipulations, which the bond is intended to enforce. Failing to comply can lead to disputes and claims against the bond.
  • Notification of Claim: Should the client wish to claim the bond, they must usually notify the contractor (and sometimes the bond issuer) within a certain timeframe, clearly stating the breach’s nature.
  • Dispute Resolution: The bond document may outline specific dispute resolution methods, such as arbitration or litigation, that must be pursued before cashing the bond.
  • Bond Release: The bond is meant to be discharged or returned to the contractor upon the contract’s satisfactory completion, as per the terms of the bond.

Surety Bonds vs Construction Liens

The distinction between construction bonds and liens lies primarily in the nature of the project—private or public—and the type of security interest provided to ensure payment to construction participants. Here’s a simplified breakdown of their differences:

Private Construction Projects and Liens

Filing a lien grants the claimant a direct stake in the property itself. The lien attaches to the property, creating an interest equivalent to the amount owed to the claimant. A lien encumbers the property, complicating the owner’s ability to sell or secure financing against it. If the debt remains unpaid, the claimant can initiate a foreclosure lawsuit to force the sale of the property and recover the funds.

Public Construction Projects and Bonds

On public projects, where liens against the property are not applicable due to the public ownership of the property, a payment bond serves as a protective barrier. This bond ensures that construction parties can claim against it in case of non-payment. Publicly owned property cannot be sold off to settle debts, making mechanics liens unsuitable for public projects. The payment bond emerges as an alternative security form, safeguarding the rights of construction participants to be compensated fairly and promptly for their contributions, even on publicly owned projects.

Key Differences between Surety Bonds and Construction Liens

  • Security Interest: Construction liens provide a security interest in the actual real property improved during the construction process. In contrast, bond claims offer a security interest in a set-aside sum of money (the bond) rather than the property itself.
  • Applicability: Construction liens are specific to private projects, reflecting the ability to encumber and potentially sell the property to satisfy debts. Bond claims are utilised in public projects where liens on the property are not feasible, offering a monetary fund against which claims can be made.
  • Public Policy: The underlying public policy acknowledges the necessity to protect construction participants from nonpayment. While the mechanisms differ (construction liens on private projects and bond claims on public projects), the goal remains consistent: ensuring that those who contribute labor and materials to improve properties are compensated.

Both construction liens and bond claims serve the vital function of providing security to construction participants, ensuring they are paid for their work. However, the method of providing this security—whether through an interest in real property or a claim against a bond—depends significantly on whether the project is private or public.

Construction Bonds or Liens – Making the Right Choice

The dual frameworks of construction liens and bonds play pivotal roles in safeguarding financial interests and ensuring the smooth execution of construction projects. Liens provide a direct claim on property to secure payment for labour and materials, while bonds offer a financial guarantee of contractual compliance. These mechanisms not only protect against financial loss but also establish a foundation of trust and reliability critical to the success of any construction endeavour. As the construction industry continues to evolve, understanding the nuances of these legal tools becomes increasingly important for contractors, suppliers, project owners, and other stakeholders. The stakes are high, and the legal landscape can be daunting. PBL Law Group is here to guide you through every step, ensuring your rights are protected and your interests are secured. 


Authored by

Raea Khan

Director Lawyer

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Raea Khan Circle
Director Lawyer
Raea Khan

Raea is Managing Director and Principal Lawyer for PBl Law Group. Raea assists clients with major projects, property developments, construction and strata law.

He has worked in Western Australia and Queensland assisting with expansion projects in the energy and resource sector and now predominately advises clients in Strata and Community Association matters.

He is a member of the Australian College of Strata Lawyers where majority of his work is advising developers and owners corporations with dispute related minor and major defects, strata governance and common property litigation. He is proficient at leading negotiations and meetings.

Raea has a particular interest in the commercial aspect of any dispute and always tries to weigh up the risk, reward and benefit of legal proceedings at each different stage.

Raea enjoys all forms of competitive sport, including Crossfit and actively participates in Triathlons, representing Australia as an age group athlete. He was a member of Red Head Surf Lifesaving club.

  • Strata Law
  • Construction & Major Projects
  • Commercial and Business Law
  • Planning & Environment Law