Repair or Replace? A San Diego Landlord's Maintenance Decision Guide

Maintenance is the second-largest line item in most rental P&Ls, and the biggest single lever you control. Rent is set by the market; a good repair-or-replace decision is set by you. Here's how experienced operators make the call.

The 50% rule, adjusted for age

A useful starting heuristic: if a repair costs more than 50% of replacement, replace it — especially if the item is past half its expected life. A $600 repair on an 11-year-old water heater (≈12-year life, ≈$1,500 to replace) is money spent on borrowed time. A $600 repair on a 3-year-old unit is an easy fix.

Typical San Diego lifespans to anchor on:

• Water heater: 8–12 years
• HVAC / condenser: 12–15 years
• Dishwasher / disposal: 8–10 years
• Roof (asphalt shingle): 20–25 years
• Interior paint (rental grade): 3–5 years between turns

Factor in the hidden costs of repeat repairs

A cheap repair that fails again in four months isn't cheap. Each visit carries a trip charge, diagnostic time, and — worst of all — a tenant who is losing patience. Tenant frustration shows up later as a non-renewal, and turnover costs far more than the appliance. Count the pattern, not just the invoice: a third service call on the same unit is usually a replacement in disguise.

Move fast on habitability items

California's implied warranty of habitability doesn't wait for your budget cycle. Loss of heat, hot water, working plumbing, secure locks, or electrical safety must be addressed promptly — and a slow response can expose you to rent withholding or "repair and deduct." For these, the decision isn't repair vs. replace; it's fix it now, optimize later. Get the tenant safe and functional, then make the long-term call.

Get the estimate — and a second opinion on big jobs

For anything over a few hundred dollars, an itemized estimate (parts + labor, separated) tells you whether you're being quoted fairly and whether the scope matches the symptom. On major work, a second quote pays for itself more often than not. This is exactly where AI triage helps: it classifies the issue, predicts the likely cause and parts, and produces a cost range before the vendor arrives — so an owner approving the work already knows what "reasonable" looks like, and can compare the real quote against it.

A quick decision checklist

1. What's the repair cost as a percentage of replacement?
2. How old is the item relative to its expected life?
3. Is this the first failure, or a pattern?
4. Is it a habitability item that must be fixed immediately?
5. Does the estimate itemize parts and labor — and does it pass a smell test?

Answer those five and the right call is usually obvious.