CapEx Explained: How Israeli Investors Budget for Capital Expenditures in US Rental Property

What Counts as Capital Expenditure vs. Maintenance in Real Estate?

Capital expenditure (CapEx) is money spent to acquire, improve, or extend the useful life of a property component — a roof, HVAC system, plumbing, or parking lot. If the work adds value or extends the productive life of an asset, it's CapEx. If it simply keeps the property in its current working condition, it's operational expenditure (OpEx), also called routine maintenance.

The line matters because the IRS treats them differently, and your pro forma — the financial model you build when underwriting a deal — must separate them clearly to produce accurate cash flow projections.

Practical examples:

• CapEx: Replacing a 20-year-old roof, installing a new HVAC unit, repaving a parking lot, replacing windows, gut-renovating a kitchen
• OpEx: Unclogging a drain, repainting a single unit between tenants, replacing a broken light fixture, routine landscaping, pest control

The test is simple: did the work restore something to its original condition, or did it replace/improve a major system? Replacing means CapEx. Repairing a functional system to avoid replacement is OpEx. A $300 HVAC tune-up is OpEx; a $7,000 HVAC replacement is CapEx.

For NOI (Net Operating Income) calculations, OpEx is subtracted in the operating expense line. CapEx is held as a reserve — money set aside from gross income but not counted as an operating expense in the same way. This is where many investors, especially those new to US multifamily, misread a deal's actual performance.

How Much CapEx Should I Budget for a Rental Property?

The standard reserve for US multifamily real estate is 5–10% of annual rental income, according to NARPM best practices. The right number within that range depends almost entirely on the age and condition of the building's major systems.

A stabilized, post-2010 property with new mechanicals might run at 5% or less. A mid-century building in good shape sits comfortably at 5–8%. Pre-1980 buildings — where aging electrical, plumbing, and HVAC systems are all approaching end-of-life simultaneously — often require 12% or more.

Here's what that looks like in practice: an investor buys a 4-unit building generating $60,000 in annual rent. At 8% CapEx, they're setting aside $4,800 per year. That money doesn't flow to the owner — it sits in a replacement reserves account, available when a roof or furnace fails. If they budget only 3% because they want to show better cash flow to their partners, they're essentially borrowing from the future. When the roof needs replacing three years from now, that $18,000 has to come from somewhere.

This is where the cash-on-cash return — actual cash distributed divided by cash invested — diverges from the projected number on the offering memorandum. CapEx reserves held back from distributions are real money. Underestimating them overstates the return investors actually receive.

What Is the Difference Between CapEx and Depreciation?

CapEx and depreciation operate in the same territory but serve different functions. CapEx is the actual cash you spend — a check written, an invoice paid. Depreciation is a non-cash accounting deduction the IRS allows you to take against taxable income to account for an asset's theoretical wear over time.

Under IRS Publication 946, US residential real estate depreciates over 27.5 years using straight-line depreciation. That means on a $275,000 building (land excluded — land doesn't depreciate), you can deduct $10,000 per year from taxable income, even though no money left your account that year. This is one of the most powerful tax benefits in US real estate investing and a primary driver of why real estate generates strong IRR (Internal Rate of Return) on an after-tax basis.

The two concepts interact but don't cancel each other out. When you spend $12,000 replacing a roof, that's a CapEx event — you've improved the asset. The IRS then allows you to depreciate that new roof over its useful life (27.5 years for residential structures, or via cost segregation, faster for specific components). You're spending cash now and recovering it as a deduction spread over years.

One important implication for investors planning an eventual sale: depreciation recapture. When you sell, the IRS recaptures the depreciation you've taken at a 25% rate, separate from capital gains. Long-term hold decisions need to account for this — a property held 10 years with aggressive depreciation will carry a meaningful recapture liability at exit.

How Often Do Major Capital Expenditures Occur on Residential Property?

Major systems have predictable lifecycles, and experienced investors use those lifecycles to stress-test their underwriting.

The most expensive items by cycle:

• Roof: $8,000–$15,000 per 1,000 sq ft, replaced every 15–25 years
• HVAC per unit: $5,000–$10,000, replaced every 15–20 years
• Exterior painting (multi-unit): $2–$5 per sq ft, cycles every 5–7 years
• Appliances (refrigerators, stoves, dishwashers): Typically 10–15 years, lower individual cost but high frequency in multifamily
• Plumbing: Long lifespan but failure clusters in older cast-iron or galvanized systems

These cycles don't line up neatly — on any real building, they're staggered. The danger zone is when multiple systems age together. A 30-year-old building bought today may have a roof replaced at year 5, an HVAC failure at year 3, and exterior paint due at year 2. That's not catastrophic if you've reserved correctly; it's a crisis if you modeled 3% CapEx because the first year looked clean.

Pre-1980 buildings carry a specific risk profile. Older electrical panels may not support modern load demands. Cast-iron plumbing is heavier to repair and more prone to failure. The systems that were cutting-edge in 1975 are now at or past end-of-life. The 12%+ reserve threshold for these buildings exists precisely because the failure probability of multiple systems converging is genuinely higher.

Can I Deduct Capital Expenditures Immediately or Must I Depreciate Them?

In most cases, capital expenditures must be depreciated over time — they cannot be expensed in full in the year you spend the money. The IRS treats a new roof or HVAC replacement as a capital improvement that extends the asset's useful life, so you recover the cost over the depreciation schedule, not immediately.

There are two meaningful exceptions worth knowing:

Section 179 expensing allows immediate deduction of certain property — primarily personal property like appliances and some equipment — up to annual limits. This doesn't apply to structural components like roofs.

Bonus depreciation, significantly expanded by the Tax Cuts and Jobs Act, allowed 100% first-year deductions on qualifying property. The bonus depreciation percentage has been phasing down (80% in 2023, 60% in 2024, and so on) — check current rules with a US tax advisor, as this is an evolving area.

Cost segregation is a tax strategy where an engineer reclassifies portions of a property into shorter-lived asset categories — flooring, cabinetry, land improvements — allowing you to depreciate those components over 5, 7, or 15 years instead of 27.5. On a large acquisition, cost segregation can generate six figures of accelerated depreciation in year one. This is particularly relevant for Israeli investors who are structuring a US entity (typically an LLC) and want to maximize early-year tax shelter.

The baseline rule remains: most structural CapEx gets depreciated over 27.5 years. Work with a CPA who specializes in real estate investing — not a general accountant — to build the right depreciation schedule from closing day.

How to Estimate CapEx When Evaluating a Property to Buy

CapEx estimation during due diligence is one of the highest-leverage skills in real estate underwriting. Done well, it reveals whether the asking price reflects the true cost of ownership — or whether the seller has been running the property lean and leaving the next buyer to absorb a backlog of deferred maintenance.

The process works as follows:

1. Pull the age of every major system — roof, HVAC (each unit in multifamily), water heater, electrical panel, plumbing, windows. Sellers often have records; if not, a licensed inspector can estimate.
2. Calculate remaining useful life for each system. A 12-year-old HVAC with a 15-year lifespan has roughly 3 years left. A 10-year-old roof with a 20-year lifespan has 10 years. Each should be costed at replacement value, prorated over remaining life.
3. Annualize the total and compare it to the 5–10% rule. If the system-by-system math produces 11% and the seller's pro forma shows 6%, you've identified a pricing gap.
4. Apply a condition multiplier. Deferred maintenance compounds — a roof that's been leaking for two years costs more to replace than one that's been routinely maintained. Factor this into your reserve estimate.

A concrete example: you're evaluating a 1978 six-unit building in Tampa at $600,000. The HVAC units are original from a 2004 renovation — 22 years old, past their expected life. The roof was replaced in 2015 — 11 years old with roughly 9 years left. Exterior was last painted in 2019. The HVAC situation alone should increase your CapEx reserve toward 12%, which on $72,000 in annual rent means $8,640 per year held back from distributions. If the offering was underwritten at 6%, you're looking at a $4,320 annual gap — that compounds into a meaningful IRR miss over a 7-year hold.

What happens if a property owner doesn't set aside CapEx reserves? The short answer: they run strong distributions right up until a major system fails, then face a cash crisis. An unplanned $10,000 HVAC replacement on a property with no reserve fund means either pulling from personal cash, deferring the repair (which accelerates deterioration and tenant turnover), or taking on debt. On a multifamily property with deferred mechanical issues, a single bad winter can cascade into multiple simultaneous failures. The investors most likely to experience this are those who modeled an optimistic pro forma at purchase and never revisited their reserve assumptions as systems aged. Running a clean CapEx reserve from day one isn't conservative — it's the baseline of professional property management.