The California Investor
Capital Expenditures
By JC Pacific Corp Last updated 2026-10-02
Capital expenditures, or capex, are the big, expensive replacements that wear out on their own schedule: roofs, HVAC systems, water heaters, major appliances, and flooring. They are different from routine maintenance because they are large, infrequent, and predictable-ish.
Run the numbers
Build a line-by-line renovation budget with a built-in contingency.
Open the Rehab EstimatorCommon Capital Expenditures
- Roof replacement
- HVAC system replacement
- Water heater replacement
- Major appliances
- Flooring replacement
- Exterior painting
- Foundation and structural repairs
Why Capex Needs Its Own Reserve
New investors budget for monthly expenses but forget that every property eventually needs a roof or a new HVAC system. When that happens, a $12,000 roof can consume years of cash flow. Setting aside a monthly capex reserve spreads the cost over time.
How to Estimate the Reserve
List the major components, their expected remaining life, and replacement cost, then divide by the months until replacement is needed. Add the results to get a monthly capex reserve. The rehab estimator can help you price out a major renovation scenario.
Inspect Before You Buy
Age and condition of the roof, HVAC, and water heater are among the most important things to check before buying a rental. The inspections guide covers what to examine, and a good inspection report drives your capex reserve.
Capex and Your Numbers
Include capex in any cash flow projection. A property that only works without reserving for capital items is a property that will surprise you. The rental property calculator lets you include reserves in your monthly expenses.
Frequently Asked Questions
How much should I reserve for capital expenditures?
It depends on the property's age and condition. A reasonable approach is to list each major component, estimate its remaining life and replacement cost, and divide by months. Many investors also keep a general minimum reserve per property.
Is replacing a water heater a repair or a capital expenditure?
It is usually treated as a capital expenditure because it is a major replacement, but classification matters for tax treatment. Consult a qualified tax professional for your situation.
What happens if I skip capex reserves?
You will face large, unbudgeted bills when components fail, which can turn a great year of cash flow into a loss. Reserves turn surprises into planned expenses.
Educational information
This guide provides general, educational information about California investment real estate. Any calculations, projections, or examples are estimates for educational and planning purposes only and do not constitute financial, tax, legal, lending, or investment advice. Market conditions, loan programs, rates, underwriting requirements, laws, and rules change over time, so verify current information with qualified professionals before making decisions. JC Pacific Corp is a real estate brokerage, not a lender, tax adviser, or law firm.
Run the numbers first. When you're ready to look at properties, JC Pacific can help with the next step.
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