Last updated 2026-07-25
TL;DR
A reserve study is a professional inspection and funding plan for a building's major components (roof, structure, plumbing, paving) that tells a Florida board how much to save each year. Florida condos over three stories must fund reserves for items covered by the SIRS. Studies typically cost $3,000 to $20,000+ depending on building size and complexity.
What is a reserve study?
A reserve study is a physical inspection and financial analysis of a property's shared components, done by a qualified professional, that produces two things: a list of what needs replacing or major repair and when, and a funding schedule showing how much money the association needs to set aside each year to pay for it without a surprise bill. Think of it as a maintenance and savings plan rolled into one document. The physical side (the "component inventory") lists things like the roof, painting, pavement, elevators, pool equipment, plumbing risers, and for condos in Florida, the structural elements covered under the Structural Integrity Reserve Study (SIRS) requirement: primary structural members, roof, floor, load-bearing walls, and more. The financial side (the "funding plan") takes remaining useful life and current replacement cost for each item and spreads the cost over the years remaining, so the association is building the fund gradually instead of levying a special assessment when the roof fails. A full reserve study usually includes an on-site visual inspection, review of maintenance records, and sometimes destructive or invasive testing on structural elements (more common in milestone inspections than routine reserve studies). The output is a report with cost estimates, useful life estimates, and at least one funding plan recommendation, often showing a "full funding" scenario and a "threshold funding" or "baseline" scenario side by side. In Florida, reserve studies are distinct from milestone inspections but closely related. A milestone inspection (required for condo and cooperative buildings three stories or more, generally at 30 years old, or 25 years if within three miles of the coast, and every 10 years after) examines structural safety [1]. A SIRS looks at similar structural components but for the purpose of reserve funding, not life-safety certification. Many associations schedule them close together because the same engineer visit can inform both.
What is a reserve study for an HOA?
For a homeowners association, a reserve study works the same way as for a condo, but it covers the components the HOA actually owns and maintains: things like private roads, clubhouse buildings, pool decks, retaining walls, drainage systems, gates, and common-area roofs. It does not typically cover things owned by individual homeowners, like their own roof or driveway, unless the HOA's governing documents make those a common expense. Florida's reserve study requirements differ sharply for condos versus HOAs. Condominium associations under Chapter 718 face specific statutory deadlines: SIRS reports for buildings three stories or higher were due by December 31, 2024, and reserve funding for the components identified in that SIRS became mandatory starting with the 2025 fiscal year budget [2]. HOAs governed by Chapter 720 do not have the same SIRS mandate. Chapter 720 requires that if an HOA reserve is included in the budget, it must be funded per a reserve schedule based on estimated remaining useful life and replacement cost, but HOAs can still vote to waive or reduce reserves in many cases, something condos largely lost the ability to do after the 2022 and 2023 legislative changes [3]. That said, plenty of HOA boards get a reserve study voluntarily, because lenders, insurers, and buyers increasingly ask for one, and because underfunded HOAs run into the same special-assessment shock that condos do. If your HOA has aging infrastructure (drainage, private roads, a clubhouse roof past 20 years), a reserve study is cheap insurance against a five-figure surprise assessment. See our HOA reserve study guide for the HOA-specific funding math and waiver rules.
How much should an HOA have in reserves?
There's no single dollar figure or percentage that fits every HOA. The honest answer is: enough to fully fund the components in your reserve study according to their remaining useful life, which depends entirely on the age, size, and complexity of what your association owns. Industry practitioners, including the Community Associations Institute, generally describe two funding approaches. "Full funding" targets 100% of the calculated reserve requirement at all times, so the fund balance always roughly matches the depreciated value of the components. "Baseline" or "threshold" funding keeps the balance from ever hitting zero, but tolerates dips closer to zero between big expenses. Most reserve study firms will show a board a "percent funded" figure, the ratio of actual reserve balance to the ideal fully-funded balance, and CAI's own guidance flags anything under 30% funded as a red flag likely to require a special assessment or loan in the near term [4]. For Florida condos specifically, the math is no longer optional for SIRS components. Florida Statute 718.112(2)(f) requires that reserves for items on the SIRS be funded at the amount recommended by the study, calculated using the straight-line accounting method, with no ability for the membership to waive or reduce that funding for those specific components [2]. Non-SIRS reserve items (things like painting or a clubhouse not on the structural list) can still potentially be waived by a majority vote in many associations, subject to the specific rules in the statute and the association's documents. A rough industry rule of thumb some reserve professionals use for older communities: budget for reserves equal to roughly 15% to 40% of the total annual operating budget, though this varies enormously by building age and amenity load. Don't treat that as a target, it's just a sanity check. The reserve study numbers, not a percentage rule, should drive the actual line-item budget.
How much does a reserve study cost?
| Full reserve study, small HOA (under 50 units, no SIRS components) | $2,500-$5,000 | Site visit, component inventory, funding plan | |
|---|---|---|---|
| Full reserve study, mid-size condo (50-200 units) | $5,000-$12,000 | Site visit, component inventory, funding plan | |
| Combined reserve study + SIRS, condo 3+ stories | $10,000-$25,000+ | Structural inspection by licensed engineer/architect, SIRS components, funding plan | |
| Reserve study update (no new site visit) | $500-$2,000 | Recalculated numbers using prior inspection data | Under Florida law, the SIRS itself must be performed by a licensed engineer or architect [1], and DBPR is the state agency that oversees licensing for these professionals. A general reserve study covering non-structural components (paint, pavement, pool equipment) does not always require the same license, but many associations use the same reserve specialist or engineering firm for both to save on travel and inspection time. Get at least two quotes, and ask specifically whether the SIRS portion is being done by a properly licensed engineer or architect, because that's a statutory requirement, not a nice-to-have. |
A reserve study for a Florida condo or HOA typically runs $3,000 to $8,000 for a straightforward property, and can run $10,000 to $20,000 or more for larger, older, or structurally complex buildings, especially when the study includes invasive testing tied to a SIRS. Cost drivers include: number of buildings and units, whether the study is a full study (on-site inspection of every component) versus an update (desktop review of a prior study), whether structural/SIRS work requires a licensed engineer or architect doing invasive testing (concrete coring, rebar scanning), and geographic location (South Florida coastal high-rises tend to cost more than a small inland HOA clubhouse). | Study type | Typical cost range | What it covers |
What is an HOA assessment?
An HOA assessment is money the association charges its members, on top of or instead of regular dues, to cover costs the regular budget doesn't. There are generally two kinds: regular (or "annual") assessments that fund routine operating expenses and reserves, and special assessments, one-time or limited-duration charges levied to cover an unexpected or large expense the reserve fund can't absorb. Regular assessments are the predictable monthly or quarterly fee every owner pays, calculated from the annual budget divided among units according to the association's documents (often by square footage or percentage ownership for condos, sometimes flat-rate for HOAs). Special assessments show up when something goes wrong or the reserve study reveals a shortfall: a roof failure, storm damage beyond insurance coverage, a structural repair flagged by a milestone inspection, or a state-mandated reserve catch-up. Florida condo boards can levy a special assessment without a membership vote in most circumstances if the association's declaration allows it and the amount is within the board's budgetary authority, though large assessments often trigger notice and, in some cases, membership approval requirements laid out in the association's own documents. See hoa special assessment for the notice rules and payment plan options many associations are required to offer.
What are HOA assessments used for, and how are they calculated?
HOA assessments fund whatever the association's governing documents say it's responsible for: common-area maintenance, insurance on shared structures, reserve contributions, management fees, utilities for common areas, and legal or administrative costs. What counts as a common expense is set by the declaration and bylaws, not by state law generically, so two HOAs down the street from each other can have very different assessment obligations depending on what they actually own and maintain. Calculation methods vary. Condominiums under Chapter 718 typically assess based on each unit's percentage ownership interest in the common elements, as stated in the declaration [5]. HOAs under Chapter 720 more often use equal assessments per lot or home, though some tie it to lot size or other factors specified in their covenants. When a reserve study shows a funding gap, or a milestone inspection turns up a structural problem that needs immediate repair, the board typically has two choices: raise regular assessments gradually to rebuild the reserve over several years, or levy a special assessment to cover the gap faster. Florida's post-Surfside legislative changes made the first option mandatory for SIRS-related condo reserves starting with the 2025 budget year, since boards can no longer vote to waive or underfund those specific reserve line items [2]. That's exactly the kind of decision a current reserve study is supposed to inform ahead of time, instead of after a shortfall forces an emergency vote.
Are HOA special assessments tax deductible?
Generally, no, not for the individual homeowner's personal income taxes, and not for capital improvements or repairs to the association's common property. The IRS treats HOA assessments, regular or special, as personal living expenses in most owner-occupied situations, similar to how ordinary home maintenance costs aren't deductible. There are narrow exceptions. If the property is a rental or investment property, a special assessment tied to maintenance or repair of the rental unit's building may be deductible as a rental expense, and assessments tied to a capital improvement may need to be added to the property's cost basis instead of deducted immediately, per general IRS rules on rental property expenses and improvements [6]. If part of the home is used for a legitimate home office, a portion of assessments may be deductible under home office rules. None of this is automatic, and the correct tax treatment depends on facts like whether the unit is a primary residence, a rental, or mixed use, and whether the assessment pays for a repair versus a capital improvement. This is a tax question, not a condo law question, and the honest answer is: talk to a CPA or tax preparer familiar with real estate before assuming any assessment is deductible. Don't rely on a board member's or a property manager's opinion on this one.
What's the difference between a reserve study and a milestone inspection?
A milestone inspection is a life-safety structural check required by Florida law for condo and cooperative buildings three stories or higher. A reserve study, including the SIRS, is a funding and maintenance planning document. They often overlap in scope but serve different legal purposes. Under Florida Statute 553.899, buildings must complete a Phase 1 milestone inspection by December 31 of the year the building turns 30 years old, or 25 years old if the building is within three miles of the coastline, and then again every 10 years [1]. If the Phase 1 inspection finds "substantial structural deterioration," a Phase 2 inspection (more invasive testing) is required. The milestone inspection report goes to the local building official, and the statute is explicit that inspections "must be performed" by a licensed engineer or architect [1]. The SIRS, required under Florida Statute 718.112(2)(g), for condos three stories and higher covers a defined list of structural and life-safety components (roof, load-bearing walls, primary structural members, floor, foundation, fireproofing, electrical wiring, plumbing, waterproofing) and produces reserve funding recommendations for those items, not a pass/fail safety verdict [2]. A building can pass its milestone inspection and still have a SIRS that shows its reserves are dangerously underfunded, or vice versa. Because the same components often get inspected for both, many associations schedule the milestone Phase 1 report and the SIRS site visit close together, sometimes using the same engineering firm, to save money on separate site visits. Check with your association's engineer whether combining them makes sense for your building's timeline; see our reserve study for condo association guide for scheduling detail.
Who can perform a reserve study or SIRS in Florida?
For the SIRS structural inspection, Florida law requires the visual inspection be performed by a licensed engineer or architect, and the report must be signed and sealed by that professional [2]. For general (non-structural) reserve study components, like painting, pavement, or pool equipment, no single license is mandated by statute the way it is for structural inspection, but most reputable studies are still done by a credentialed reserve specialist, often someone holding a Reserve Specialist (RS) designation through the Community Associations Institute, or a licensed engineer doing the whole package. DBPR, Florida's Department of Business and Professional Regulation, licenses and regulates engineers and architects through its boards, and maintains license verification tools boards can use to confirm a professional's license is active before signing a contract. Always verify a license before you hire, especially after a hurricane season when demand for engineers spikes and unlicensed operators sometimes try to get in the door. Boards should get proposals from at least two or three firms, check references from other associations of similar size and age, and confirm in writing whether the quote includes both the SIRS structural components and the broader non-structural reserve items, since some firms price these separately.
What happens if a Florida condo doesn't get its reserve study or doesn't fund reserves?
Skipping a required SIRS or failing to fund SIRS-identified reserves puts a Florida condo association out of compliance with Chapter 718, and can expose board members to liability, complicate insurance renewal, and tank resale and financing for owners trying to sell or refinance units. Lenders including Fannie Mae have added condo project eligibility questions tied to reserve funding and structural inspection status; associations flagged as non-compliant or underfunded can end up on ineligible lists that block conventional financing for buyers, which crashes unit values and makes units hard to sell for cash only. Insurance carriers have also gotten more aggressive about requesting milestone and SIRS documentation before renewing or writing new condo policies. Florida Statute 718.112(2)(f) is direct that reserve funds for the components identified in a SIRS "may not be used for any purpose other than their intended purpose" and that the required contributions "may not be waived or reduced" for those components once the SIRS is complete [2]. That's a hard legal line, not board discretion. If your association hasn't completed its SIRS or hasn't updated its budget to reflect the required funding, the board should be talking to its attorney about timeline and exposure now, not after an owner or a lender flags it. Organizing all of this, the milestone deadline, the SIRS funding lines, the annual reserve budget disclosures, is exactly the kind of paperwork problem a fixed structure helps with. That's the gap our $199 Board Compliance Kit is built to close: it doesn't do the inspection or the study (only a licensed engineer or reserve professional can do that), but it organizes deadlines, tracks required disclosures, and gives your board a communication template for owners once the numbers come back.
How do boards actually use a reserve study once they have one?
A finished reserve study is only useful if the board actually builds it into the budget, communicates it to owners, and revisits it on a schedule, not if it sits in a file after the annual meeting. Most reserve professionals recommend updating a full reserve study every 3 to 5 years, with a cheaper desktop update in between if there's been no major construction or component replacement. CAI's practitioner guidance treats this update cycle as standard industry practice, since replacement costs, useful life estimates, and inflation assumptions all drift over time [4]. Practically, a board should: adopt the funding plan into the annual budget (more than note it in the minutes), disclose the reserve schedule and any waiver history to owners per Chapter 718 disclosure requirements, keep the study and all inspection reports in one accessible file for the next board and for the association's attorney, and revisit the numbers any time a major storm, structural finding, or unexpected repair changes the assumptions. Boards that treat the reserve study as a living budget tool, rather than a one-time compliance checkbox, are the ones that avoid emergency special assessments. For a step-by-step on drafting the reserve line items into a condo budget, see reserve study and florida condo reserve fund relief for the legislative relief options some associations have used to phase in funding.
Frequently asked questions
What is a reserve study?
A reserve study is a professional inspection and financial analysis of a property's major shared components (roof, structure, paving, plumbing) that estimates remaining useful life, replacement cost, and how much an association should save each year. Florida condos three stories and up must complete a Structural Integrity Reserve Study (SIRS) covering specific structural items under Florida Statute 718.112(2)(g) [2].
What is a reserve study for an HOA?
For an HOA, a reserve study covers common-area components the association owns, like private roads, clubhouse buildings, and shared amenities, and produces a funding schedule for replacing them. Unlike condo SIRS requirements, HOAs under Chapter 720 generally still can vote to waive or reduce reserve funding, though a study is still the best defense against surprise special assessments.
What is an HOA assessment?
An HOA assessment is money the association charges members to cover operating costs, reserves, and unexpected expenses. Regular assessments are the predictable monthly or quarterly dues; special assessments are one-time charges for costs the reserve fund and regular budget can't cover, such as storm damage or a structural repair flagged by inspection.
How much should an HOA have in reserves?
There's no universal dollar figure; the right amount equals whatever your reserve study calculates for full or threshold funding of your specific components. CAI guidance flags reserve funding under 30% of the ideal fully-funded balance as a warning sign likely to trigger a special assessment or loan soon [4].
How much does a reserve study cost?
Reserve studies typically cost $3,000 to $8,000 for small to mid-size properties, and $10,000 to $25,000 or more for larger condos combining SIRS structural work with a full non-structural component study. Updates to an existing study without a new site visit often cost $500 to $2,000.
Are HOA special assessments tax deductible?
Generally no, for a primary residence, since the IRS treats HOA assessments as personal living expenses. Exceptions may apply for rental or investment properties, or the home-office portion of a primary residence, but the correct treatment depends on facts like repair versus capital improvement. Confirm with a CPA before assuming any deduction applies.
What's the difference between a milestone inspection and a SIRS?
A milestone inspection is a required structural life-safety check for Florida condo buildings three stories and higher, due at 30 years (25 if near the coast) and every 10 years after, under Florida Statute 553.899 [1]. A SIRS is a reserve funding study for structural components under Chapter 718 [2]. They often get scheduled together but serve different legal purposes.
Who is required to do a reserve study or SIRS in Florida?
The SIRS structural inspection must be performed and sealed by a licensed engineer or architect under Florida Statute 718.112(2)(g) [2]. General (non-structural) reserve study components don't have the same statutory license requirement, though most associations use a credentialed reserve specialist or the same engineering firm for consistency.
Can a Florida condo waive its reserve funding requirement?
No, not for components identified in the SIRS. Florida Statute 718.112(2)(f) states that reserve funding for SIRS-identified components may not be waived or reduced by membership vote once the study is complete [2]. Non-SIRS reserve items may still potentially be waived depending on the association's documents and remaining statutory rules.
What happens if a condo association skips its required SIRS?
The association falls out of compliance with Chapter 718, which can expose board members to liability, jeopardize insurance renewal, and get the building flagged on lender ineligibility lists, blocking conventional financing for buyers and hurting resale values. Boards behind on SIRS or milestone deadlines should talk to counsel about their exposure immediately.
How often should a reserve study be updated?
Industry practice generally calls for a full update every 3 to 5 years, with a lighter desktop update in between if no major components were replaced or damaged. CAI treats this cycle as standard practitioner guidance since replacement costs and useful-life assumptions shift over time [4].
Does a reserve study replace a milestone inspection?
No. A milestone inspection is a separate statutory requirement focused on structural safety, filed with the local building official under Florida Statute 553.899 [1]. A reserve study, including the SIRS component, focuses on funding, not safety certification. Many buildings need both, and often schedule the site visits together to save cost.
Sources
- Florida Senate, Florida Statutes Chapter 553.899: Milestone inspection timing (30 years, 25 years if within 3 miles of coast, every 10 years after) and licensed engineer/architect requirement
- Florida Senate, Florida Statutes Chapter 718.112: SIRS reserve funding requirements, no waiver for SIRS components, and licensed engineer/architect requirement for the structural inspection
- Florida Senate, Florida Statutes Chapter 720.303: HOA reserve schedule and funding/waiver rules under Chapter 720
- Community Associations Institute, reserve funding best practices guidance: Percent-funded thresholds and recommended reserve study update cycle of 3-5 years
- Florida Senate, Florida Statutes Chapter 718.115: Condo assessments are calculated based on each unit's percentage ownership interest in common elements
- Internal Revenue Service, Publication 527 Residential Rental Property: Rules on deducting rental property repair expenses versus capitalizing improvements, relevant to special assessment tax treatment