Florida construction lien and payment law for AI data centers

In short

In Florida, anyone who furnishes labor, services, or materials for a private AI data center may claim a lien on the property using Chapter 713, Florida Statutes. The right to a lien turns on strict deadlines. A subcontractor or supplier without a direct contract with the owner must serve a Notice to Owner within 45 days after it first furnishes work. A Claim of Lien must be recorded within 90 days after the last work. The lien lasts one year unless the claimant files a foreclosure suit, or the owner shortens that period with a contest notice. An owner can remove lien exposure by requiring the contractor to post a payment bond before work begins, but a bond triggers its own notice deadlines for claimants. Florida also has a Construction Contract Prompt Payment Law, Section 715.12, that forces owners and higher tier contractors to pay down the chain quickly and adds steep interest when they do not. Several recent statutory changes, most notably House Bill 331 in 2023, have tightened service and time-computation rules, while other proposed lien reforms failed to pass.

What statute governs construction payment and liens in Florida?

Florida’s Construction Lien Law lives in Chapter 713, Part I, of the Florida Statutes. Fla. Stat. Ch. 713, Part I It is the exclusive way to place a lien on private real property to secure payment for construction work. The law applies only to privately owned property. Work on public land is governed instead by Section 255.05 for state and local projects, and by the federal Miller Act for federal projects. Fla. Stat. § 255.05, 40 U.S.C. § 3131

A separate but related statute, the Construction Contract Prompt Payment Law, sits at Section 715.12 and applies to written contracts to improve real property entered into after December 31, 1992, and for which a construction lien is authorized under part I of chapter 713. Fla. Stat. § 715.12(2) It does not create a lien, but it gives contractors and suppliers a way to force payment and recover high interest when payments are late.

Together, these two statutes form the payment security framework for every private AI data center project built in Florida.

Who can claim a construction lien on an AI data center project?

The list of potential lienors is broad. The statute gives lien rights to contractors, subcontractors, sub subcontractors, laborers, materialmen, architects, landscape architects, interior designers, engineers, surveyors, and mappers. Fla. Stat. § 713.01(19), Fla. Stat. § 713.03 A contractor includes a licensed general contractor or building contractor doing construction management or program management services. It also includes architects, landscape architects, and engineers who improve real property pursuant to a design build contract authorized by s. 489.103(16). Fla. Stat. § 713.01(8)

Two important groups get no lien rights. A contractor who is not properly licensed has no lien at all. And when a payment bond is properly furnished, the liens of persons who supply labor, services, or materials are transferred from the real property to the bond as security, except the contractor who furnishes the bond retains its lien against the real property. Fla. Stat. § 713.02, Fla. Stat. § 713.23, Fla. Stat. § 713.02 Their remedy is against the payment bond instead.

The definition of furnish materials is broad. It includes normal wastage, specially fabricated materials, consumable materials that do not remain on the site (less salvage value), and rental equipment. Handtools are not included. Fla. Stat. § 713.01(14) On a large data center campus, this brings in the generator supplier, the pipe yard, the pump rental house, and the steel fabricator.

How does the lien process work from start to finish?

The process runs on a chain of documents, each with its own deadline. The outline below follows the life of a subcontractor or supplier on a private AI data center project. At each step, missing the deadline kills the lien.

What is a Notice of Commencement and why does it matter?

Before any physical construction begins, the owner must record a Notice of Commencement in the county where the property sits and post either a certified copy or a notarized statement that the notice of commencement has been filed for recording along with a copy at the job site. Fla. Stat. § 713.13 If a payment bond exists, a copy must be attached to the recorded notice. The notice is valid for one year unless a different expiration date is stated. The building department cannot approve the first inspection until the notice is recorded.

This document is the master key. It tells everyone working on the project who the owner is, who the contractor is, and where to send notices. A subcontractor or supplier uses the information in the notice to serve its own Notice to Owner.

When must a subcontractor or supplier serve a Notice to Owner?

A party that does not have a direct contract with the owner, in other words, anyone below the prime contractor, must serve a Notice to Owner on the owner. The deadline is 45 days after the party first furnishes labor, services, or materials to the project. The notice must also be served before the owner makes final payment after receiving the contractor’s final payment affidavit. Fla. Stat. § 713.06(2)(a)

Failing to serve this notice is a complete defense to enforcement of the lien. The lien is dead.

In Florida, the date of first furnishing is measured by actual work on site (or delivery of materials), not by contract signing. For an electrical subcontractor that mobilizes to the site on June 1, the Notice to Owner must be served by July 16. If it is late, even by one day, the lien may be unenforceable.

How does a contractor prove all lower-tier parties have been paid?

Before the general contractor can enforce its own lien, it must execute a Contractor’s Final Payment Affidavit and deliver it to the owner at least five days before filing suit. The affidavit must state that all lienors under the direct contract who timely served a notice to owner have been paid in full, or if not, show each unpaid lienor’s name and the amount due. Fla. Stat. § 713.06(3)(d) This is an owner protection device. It forces the contractor to reveal outstanding claims so the owner can address them before the contractor forecloses.

How do you record and serve a Claim of Lien?

The claim of lien itself must be recorded in the county clerk’s office within 90 days of the lienor’s final furnishing. Fla. Stat. § 713.08 Final furnishing means the last day the lienor actually provided labor, services, or materials. For a concrete subcontractor, that is the date of its last pour. For a rental equipment supplier, it is the date the equipment was last on site and available for use. Correction of punchlist items does not extend the date. Fla. Stat. § 713.01(12)

The recorded claim must state the statutory warning, a description of the property, the amount owed, and the names of the owner, contractor, and lienor. It must be served on the owner. Failure to serve the claim of lien before recording or in as little as 15 days after recording renders it voidable only to the extent the failure or delay is shown to have prejudiced a person entitled to rely on the service. Fla. Stat. § 713.08 The 2023 amendments to Section 713.18 allow service by hand delivery, by common carrier or registered or certified mail with evidence of delivery, or, if those methods cannot be accomplished, by posting on the construction site. Fla. Stat. § 713.18

How long does a lien last and how can it be enforced?

A recorded claim of lien is valid for one year from the date of recording. Fla. Stat. § 713.22 If the lienor does not file a foreclosure action within that year, the lien expires.

An owner can accelerate the deadline. A Notice of Contest of Lien under Section 713.22(2) shortens the enforcement window to 60 days. A summons to show cause can reduce it further, to just 20 days. For a contractor or supplier, the takeaway is that a recorded lien is not a permanent cloud. The owner can force the matter quickly.

On large AI data center campuses, prolonged work on later phases can make the final furnishing date a moving target. The 90-day clock runs separately for each lienor. The person tracking the project must document exactly when each trade finishes its last real work.

Key deadlines at a glance

How do payment bonds change the risk on a data center project?

A payment bond is the primary tool an owner uses to keep liens off the property. On a private project, if the contractor furnishes a payment bond meeting the requirements of Section 713.23, the owner’s real estate is shielded from construction liens. The claimants must then pursue the bond, not the land.

What kinds of bonds are available under Florida law?

To exempt the property from liens, the contractor must record a payment bond in at least the amount of the original contract price before construction starts. A copy must be attached to the Notice of Commencement. The bond must be issued by a surety authorized to do business in Florida and must be conditioned on prompt payment for labor, services, and material to all lienors under the contractor’s direct contract. Fla. Stat. § 713.23(1)(a)

A bond that was not attached to the Notice of Commencement is not useless. The owner or contractor can still record a Notice of Bond and serve it on lienors. The lienor may then calculate notice deadlines from either the dates specified in s. 713.23 or the date the notice of bond is served on the lienor. Fla. Stat. § 713.13(1)(e)

What notices must a bond claimant serve?

The bond claimant, like the lien claimant, faces tight notice rules. A lienor not in privity with the contractor must serve a Notice to Contractor within 45 days of first furnishing. If a notice of commencement with the attached bond was not recorded before construction started, a lienor not in privity with the contractor may instead serve the Notice to Contractor up to 45 days after being served with a copy of the bond. Fla. Stat. § 713.23(1)(c) A timely Notice to Owner under Section 713.06 satisfies this requirement too, so a subcontractor that properly served an owner notice need not serve a separate notice to the contractor.

A second, mandatory step is the Sworn Notice of Nonpayment. It must be served on the contractor, with a copy to the surety, within 90 days of the claimant’s final furnishing. Fla. Stat. § 713.23(1)(d) One small exception exists. The failure of a lienor to receive retainage sums not in excess of 10 percent of the value of labor, services, or materials furnished by the lienor is not considered a nonpayment requiring the service of the notice of nonpayment under this paragraph. Fla. Stat. § 713.23(1)(d), Fla. Stat. § 713.23(1)(d)

The notice must be sworn, and any willful exaggeration or inclusion of unperformed work forfeits the claimant’s entire right under the bond. The 2019 amendments aligned this fraudulent notice standard with the one for liens. Construction Executive

What are the deadlines to sue on a payment bond?

A suit on the bond must be filed within one year after the last furnishing of labor or materials. Fla. Stat. § 713.23(1)(e) The contractor or surety can shorten this to 60 days by recording and serving a Notice of Contest of Claim Against Payment Bond. If the claimant misses that 60-day window, the bond claim is extinguished.

What is a conditional payment bond, and why do owners dislike it?

A conditional payment bond is the opposite of the standard payment bond. The surety’s duty to pay is expressly limited to payments the owner has made to the contractor. The bond’s front page must be labeled conditional payment bond in 10 point type with a specific warning. Fla. Stat. § 713.245

Because the surety’s obligation depends on the owner having paid the contractor, a conditional payment bond does not exempt the owner’s property from liens. Practitioners call it the worst of both worlds. The owner pays a bond premium (usually built into the contract price) but remains exposed to liens. For an AI data center owner, a conditional bond provides no title protection. It is used on some private projects, but it is not a safe substitute for a proper payment bond under Section 713.23.

What does the Prompt Payment Law require, and what happens when payment is late?

The Construction Contract Prompt Payment Law, Section 715.12, applies only to written contracts to improve real property entered into after December 31, 1992, and for which a construction lien is authorized under part I of chapter 713. Fla. Stat. § 715.12(2) It forces owners to pay the general contractor, and general contractors to pay their subs and suppliers, on defined schedules. The law does not require an underlying lien claim. It is a separate enforcement tool.

When must an owner pay the contractor?

An owner must pay the contractor when the contractor is entitled to payment under the contract, has submitted a written payment request, and has provided all required affidavits and lien waivers. Fla. Stat. § 715.12(4)

The owner may withhold a portion of each progress payment as retainage until substantial completion. If the contract allows the owner to withhold retainage, the owner must pay the contractor the balance of the contract price, including the withheld amounts, within 14 days after a triggering event. A triggering event occurs when an architect or engineer certifies substantial completion, the owner submits a written punchlist within the contract time, and the contractor substantially completes the punchlist. A triggering event also occurs when a certificate of occupancy issues, the owner submits a written punchlist within the contract time, and the contractor substantially completes the punchlist. A triggering event also occurs when the owner or tenant takes possession, the owner submits a written punchlist within the contract time, and the contractor substantially completes the punchlist. Fla. Stat. § 715.12(7)(a) If the contract is silent on the punchlist timing, the owner has a default of 15 days to provide one after the triggering event. If no punchlist is given within that window, interest begins to run on the 15th day.

When must a contractor pay its subs and suppliers?

A contractor or subcontractor that has been paid by the party above it must pay its own downstream contractors and suppliers. The deadline is the later of 30 days after the labor, services, or materials were furnished and payment came due, or 30 days after the payor itself received payment. Fla. Stat. § 713.346 This is a separate enforcement statute, not part of the prompt payment law, but it reinforces the same principle. Money must move down the chain promptly.

What interest rate applies to late payments?

Late payments under Section 715.12 bear interest at the statutory judgment rate under Section 55.03 plus an additional 12 percent per year. Fla. Stat. § 715.12(5)(a) Interest is calculated from the 14th day after payment was due. The Section 55.03 rate is set quarterly by the Florida Chief Financial Officer. Adding 12 points on top creates a strong incentive to pay on time. On a large AI data center project with progress payments in the tens of millions, a single late payment can generate significant interest exposure.

One important limit is that prompt payment interest under Section 715.12 cannot be included in a Florida mechanics lien. The only extra contractual amount that can be added to a lien is a contractually specified finance charge. Levelset

What is the expedited remedy under Section 713.346?

When a contractor or owner receives money for a permanent improvement and fails to pay an undisputed obligation for labor, services, or materials within the deadlines mentioned above, the unpaid party may file a verified complaint and obtain an evidentiary hearing. Fla. Stat. § 713.346 The hearing cannot be set less than 15 days from written notice. The court may order an accounting, a temporary injunction, a prejudgment attachment, and payment of the claimant’s costs and attorney fees. The only defenses are a bona fide dispute over the work or a material breach by the claimant.

This remedy is fast and potent. It does not depend on a recorded lien. It works on the simple premise that if the owner has paid the contractor, the contractor must pay its subs. The Florida Bar Journal has noted that the procedure parallels Section 255.071 for public projects, which a Florida appellate court has enforced, but there are no published appellate cases directly interpreting Section 713.346. The Florida Bar Journal

What recent statutory changes affect AI data center construction?

Several amendments in the past three years have altered the lien and payment environment. Two high profile reform bills in the 2025 session did not pass.

House Bill 331 (2023). Effective October 1, 2023, this bill made several practical changes. It created a new statute, Section 713.011, that extends a deadline when the last day falls on a Saturday, Sunday, legal holiday, or a day the clerk’s office is closed. If the clerk closes for an emergency, the clock stops for the number of days it is closed. Fla. Stat. § 713.011 It amended the service of lien rules (Section 713.18) to allow service by common carrier or registered/certified mail with delivery evidence, and site posting as a last resort. It also amended the notice of termination rules (Section 713.132) so the owner must now serve the termination notice on every lienor with a direct contract or a timely Notice to Owner before recording it. Fla. Stat. § 713.132(5)

Senate Bill 360 (2023). This bill shortened Florida’s statute of repose for construction defect claims from 10 years to 7 years. Fla. Stat. § 95.11(3)(b) The clock runs from the earliest of specified events. For an AI data center, that means the outer limit for bringing a latent defect suit is now 7 years, while the separate 4-year statute of limitations for latent defects (which runs from discovery) continues independently.

2019 bond claim uniformity. Though older, the 2019 amendments to Section 713.23 remain important because they aligned payment bond claim rules with lien rules. They required a sworn Notice of Nonpayment, adopted the fraudulent notice penalty (willful exaggeration forfeits the bond claim), and expressly allowed rental equipment values as a basis for bond claims. Construction Executive

Bills that did not become law (2025). SB 658, which passed the Senate unanimously, would have amended Section 713.20 to require that lien waiver and release forms be identical to the statutory forms. Currently, a waiver that is substantially similar to the statutory form is enforceable. The bill would also have expressly permitted conditioning a waiver on receipt of funds by any payment method, not only by check. It died in House Messages on June 16, 2025. SB 658 HB 893, a broader lien and bond bill covering notice revisions under Sections 713.015 and 713.06, died in subcommittee the same day. HB 893 The existing text of Chapter 713 remains unchanged by those bills.

Advance waiver rule unchanged. The bedrock rule of Section 713.20(2) remains. Any contract clause that waives lien rights before work is performed is unenforceable. Fla. Stat. § 713.20(2) On an AI data center project, a subcontractor cannot be forced to give up its lien remedy as a condition of being hired. Waivers are valid only for labor, services, or materials already furnished and already paid for.

What is the scale of the AI data center build market in Florida?

Florida’s AI data center construction market is growing fast and carries large sums, which magnifies every lien and bond rule described above. The market was valued at roughly $762 million in 2024 and is projected to reach $1.17 billion by 2032. Verified Market Research Rack densities are pushing from 10 kW to 50 to 100 kW per rack, a shift that requires liquid cooling and heavy electrical infrastructure. Electrical work accounts for about 42 percent of construction cost on these projects.

One data point shows the expense. The average cost to build an AI data center in Florida is forecast at approximately $11.3 million per MW of capacity. That figure is an industry estimate, not a confirmed transaction value. It gives a sense of the money flowing through a single campus. On a 100 MW campus, the upstream owner will write progress checks well into nine figure territory.

Several real projects illustrate the environment. HostDime’s Tier IV AI data center in Eatonville, near Orlando, is a 100,000 square foot facility with space for over 1,000 racks. HostDime An undisclosed company has proposed a 7 million square foot campus in Osceola County, though its approval status could not be confirmed from county records. Orlando Sentinel In West Palm Beach, Palm Beach County approved a $1.2 million generator installation for the Vista ISS Data Center in August 2024. Palm Beach County

No specific Florida AI data center lien foreclosure lawsuit has been identified in public records for 2023 through 2025. That does not mean the risk is absent. A widely cited case from Texas, Rogers-O’Brien Construction v. Microsoft Corp., involved a general contractor that filed liens and a $34 million lawsuit over a troubled AI data center in San Antonio. Multiple subcontractors also filed liens. Rogers-O’Brien Construction, a Dallas based contractor, sued Microsoft Corp. for $34 million over a problem plagued AI data center project in San Antonio, alleging design errors, water intrusion and defective software caused extensive delays. ENR

Key takeaways

• Track the 45-day and 90-day deadlines exactly. For a subcontractor or supplier without a direct contract, missing the Notice to Owner within 45 days of first furnishing kills the lien. Missing the 90-day claim of lien recording window after final furnishing also kills it.
• Define final furnishing carefully. It is the last day of actual work, not the certificate of occupancy or the punchlist. Keep field logs that prove the exact date.
• Use the Notice of Commencement as a checklist. Confirm it is recorded and posted before any work starts. Confirm any payment bond is attached. A missing bond attachment changes the notice calculus for subcontractors.
• If you use a payment bond, make it a standard Section 713.23 bond. A conditional payment bond does not exempt the property from liens and leaves the owner exposed despite having paid a premium.
• Do not rely on substantially similar lien waivers forever. The 2025 bill that would have required exact match forms died, but the trend is toward stricter form compliance. Use the statutory forms as a safe harbor.
• When payment is delayed, consider the expedited procedure under Section 713.346. It can produce a hearing within 15 days and force payment of undisputed amounts without waiting for a lien foreclosure.
• Prompt payment interest is high, Section 55.03 rate plus 12 percent. On an AI data center project with large monthly draws, that number can quickly outstrip any negotiated contract rate.
• The seven year statute of repose now runs from the earliest trigger. Defect claims that would have been viable for 10 years under the old rule are now barred sooner.
• No Florida AI data center lien foreclosure lawsuits have surfaced in public records, but the sheer dollar volume of these projects makes liens and bond claims a realistic exposure. The Texas Microsoft case shows what a problematic AI data center build can produce.

Frequently asked questions

Q:Must an AI data center owner in Florida record a Notice of Commencement?

A:Yes. The owner must record a Notice of Commencement in the county where the property sits before any construction begins. It must also post a certified copy at the job site. The building department cannot approve the first inspection without it.

Q:What happens if a subcontractor misses the 45-day Notice to Owner deadline?

A:The law treats the failure as a complete defense. The lien is unenforceable. The subcontractor may still pursue a breach-of-contract claim, but it cannot hold the real property.

Q:How long does a recorded claim of lien remain valid?

A:One year from the date of recording. If a foreclosure suit is not filed within that year, the lien expires. An owner can shorten the window by serving a Notice of Contest of Lien (reducing it to 60 days) or by a court order to show cause (reducing it to 20 days).

Q:Does Florida allow a contractor to waive lien rights before starting work?

A:No. A contract clause that waives lien rights before any labor, services, or materials are furnished is unenforceable. Waivers are only valid for work already done and paid.

Q:What is the difference between a payment bond and a conditional payment bond?

A:A payment bond under Section 713.23 protects the property from liens. The surety must pay valid claims even if the owner has not paid the contractor. A conditional payment bond limits the surety’s obligation to money the owner has actually paid the contractor, so it does not shield the property from liens. For an owner that wants its title clear, a conditional bond is a poor tool.

Q:Can a subcontractor include prompt payment interest in its lien amount?

A:No. A Florida mechanics lien may include the principal owed plus any contractually specified finance charge, but it cannot include the statutory prompt payment interest under Section 715.12. That interest can be recovered separately through a breach-of-contract or prompt payment suit.

Q:When must an owner release retainage?

A:Within 14 days after the earliest of three events, when the architect or engineer certifies substantial completion and the punchlist is done, when a certificate of occupancy issues and the punchlist is done, or when the owner or tenant takes possession and the punchlist is done. If the contract does not set a punchlist deadline, the owner has 15 days to deliver one.

Q:What recent statutory change most affects lien deadlines on AI data center projects?

A:House Bill 331 (effective October 2023) created new time-computation rules that extend deadlines when the last day falls on a weekend, holiday, or clerk closure. It also added flexible service-of-lien methods and expanded the notice-of-termination rules.

Q:Has any Florida AI data center project resulted in a lien foreclosure lawsuit?

A:No specific case has been confirmed in public records for the 2023 to 2025 period. The risk remains, as indicated by the high dollar volumes and the Texas Rogers-O’Brien v. Microsoft case, which involved multiple liens on a large data center build.

Q:Where can I find the statutory lien waiver and release forms?

A:The forms are prescribed in Section 713.20. Copies are reproduced in many construction law practice guides and from the Florida clerks of court. Because the law currently accepts forms that are substantially similar to the statutory language, using the exact statutory text is the safest practice.

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Junde Liu, JD, LL.M. (Taxation) candidate at UF Law. Originally published on Compute Law Blog. This article is general information and does not constitute legal advice. Reading it does not create an attorney client relationship. The reader should not act on the basis of any content here without first consulting a licensed attorney in the relevant state. Last reviewed for accuracy May 23, 2026.