The Absentee Owner's Home Watch Checklist: What to Inspect Between Cabo Visits

The 40-Week Problem

I talk to Cabo property owners every week who spend 4-12 weeks per year in their home. That means their million-dollar asset sits unoccupied for 40-48 weeks. In that time, a slow plumbing leak can cause $15,000 in mold damage. A failed AC compressor can let humidity destroy hardwood cabinets. A storm can breach a poorly sealed window and soak a wall for weeks before anyone notices.

I've seen every version of this story. The owner who flew down in November to find their kitchen ceiling collapsed because a rooftop drain had been clogged since August. The couple who discovered their entire outdoor furniture set was corroded beyond repair because no one applied anti-salt treatment after a September tropical storm. The investor whose seasonal maintenance lapsed and came back to a pool that was green and a pump that was dead.

All of it was preventable. Here's the checklist.

Key Takeaways

• Professional home watch services in Los Cabos cost $250-$600/month for weekly visits with photo documentation — a fraction of what a single undetected leak costs to repair.
• The three biggest threats to an unoccupied Cabo property: slow water leaks (mold within 48-72 hours in humid conditions), salt air corrosion (accelerates 10x within 500 meters of the ocean), and pest intrusion (scorpions, termites, roof rats during green season).
• Weekly visits should take 30-45 minutes and follow a consistent 15-point route through the property. Monthly deep checks add exterior, mechanical, and structural items.
• Smart home sensors ($200-$500 to install) can alert you to water leaks, temperature spikes, and power outages in real time, but they don't replace physical inspections.
• Green season (July-October) is when the most damage occurs — higher humidity, tropical storms, and the most pest activity. This is when home watch frequency should increase, not decrease.

Weekly Interior Checklist (30-45 Minutes)

Every visit should follow the same route so nothing gets skipped. Here's what a thorough weekly check covers:

Water Systems — The #1 Threat

1. Run every faucet for 30 seconds. This prevents P-trap dry-out (which lets sewer gas into the home) and identifies slow leaks before they become floods. Check under every sink for moisture or dripping.
2. Flush every toilet. Look for running water after the tank refills. A stuck flapper valve can waste 200+ gallons per day and inflate your water bill to alarming levels.
3. Check the water heater. Look for corrosion on fittings, moisture at the base, and the temperature setting (120°F / 49°C prevents bacterial growth in stagnant water).
4. Inspect the tinaco (rooftop water tank). Check the float valve, look for algae growth, verify the lid is secure (prevents bird and insect contamination).
5. Check under all sinks, around the dishwasher, and behind the washing machine. These are the most common leak sources in Cabo properties.

HVAC and Humidity Control

6. Run the AC for 15-20 minutes. Verify each zone cools properly, check for unusual noises, and confirm the drain line is flowing (a clogged condensate drain is the #2 cause of interior water damage after plumbing leaks).
7. Check for mold or musty odors. Open closets, check behind shower curtains, look at ceiling corners. In Cabo's humid green season, mold can establish in 48-72 hours in an uncooled space.
8. Verify dehumidifiers are running if installed. Check and empty collection containers or confirm drain lines are flowing.

Electrical and Security

8. Verify the property has power. Check that the CFE meter is active, the breaker panel shows no tripped breakers, and the refrigerator is running (an unpowered refrigerator in 95°F heat becomes a biohazard within days).
9. Test the alarm system. Verify sensors are communicating, check battery backup status.
10. Check all door and window locks. Verify nothing has been forced or tampered with.

General Interior

11. Look for pest evidence. Droppings, gnaw marks, dead insects, scorpions in bathrooms (they enter through drains). Green season brings the most pest activity. See our pest guide for what to expect.
12. Check all ceilings for water stains. A new stain means an active leak above — this is urgent and requires immediate follow-up.
13. Open and close all sliding doors and windows. Salt air corrodes tracks and rollers. Catching a sticky roller early costs $50 to fix; waiting until it seizes costs $500-$1,500 for full replacement.

Monthly Deep Check (Add These to Weekly)

Exterior

• Walk the roof. Check for ponding water, cracked tiles, debris blocking drains, and deteriorating caulk around penetrations (vents, satellite dishes, AC units). Flat roofs — common in Cabo — are especially prone to ponding during green season.
• Inspect exterior walls for new cracks, especially around windows and doors. Hairline cracks are normal in concrete construction; cracks wider than 3mm that are growing need structural assessment.
• Check all exterior drainage. Verify rain gutters (if installed), downspouts, and surface drainage channels are clear. One clogged drain during a September chubasco can send water into the home.
• Inspect metal fixtures — outdoor lighting, railings, gate hardware, barbecue grills. Apply anti-corrosion spray (WD-40 or equivalent) to hinges and moving parts.

Pool and Outdoor

• Pool chemistry and equipment check: pH, chlorine levels, filter pressure, pump operation, skimmer baskets. A pool that goes green during absence costs $300-$800 to recover.
• Outdoor furniture condition: Cushions should be stored in a dry, ventilated space when the owner is away. Frames need regular salt-air wipe-down.
• Landscape irrigation: Verify drip systems are running on schedule and no emitters are clogged. In the Cabo climate, a landscape that goes unwatered for 3 weeks in summer can lose $5,000+ in mature plants.

Mechanical Systems

• Generator (if installed): Run for 15 minutes under load. Check oil level, coolant, battery charge. Full maintenance schedule in our backup power guide.
• Water softener/filtration: Check salt levels, filter condition, regeneration schedule.
• Solar panels: Visual check for debris, bird nests, or cracked panels. Clean panels quarterly (more often during dusty months).

Smart Home Monitoring: What Helps, What Doesn't

I'm a fan of smart home sensors as a supplement to — not replacement for — physical inspections. The technology that's actually useful for absentee Cabo owners:

• Water leak sensors ($30-$50 each, placed under sinks, behind appliances, near water heaters): Alert you immediately when moisture is detected. These have saved owners thousands in damage. WiFi-connected models like Govee or YoLink work well in Cabo.
• Temperature and humidity sensors: Alert you when interior conditions exceed thresholds that promote mold growth (above 60% relative humidity or above 85°F for extended periods).
• Power outage monitors: Notify you when CFE power drops. A multi-day outage means no AC, no refrigerator, and potential humidity damage.
• Smart cameras (exterior): Live view of entry points and property exterior. Useful for verifying your home watch person actually showed up.

What doesn't help as much as you'd think: smart locks (the salt air destroys electronic components faster than mechanical ones), automated window blinds (the UV and salt combination burns out motors), and smart sprinkler controllers (they fail to account for Cabo's extremely variable water pressure).

Choosing a Home Watch Service

Professional home watch in Los Cabos typically costs:

• Weekly visits: $250-$400/month for a standard condo or villa
• Twice-weekly visits (recommended during green season): $400-$600/month
• Pool maintenance add-on: $150-$250/month
• Landscape maintenance coordination: $100-$200/month

What to require from any home watch service:

1. Dated, timestamped photo documentation of every visit. No photos = no proof of inspection. Minimum 15 photos covering every checklist item.
2. Written reports delivered same day via email or WhatsApp, with any issues flagged and action items proposed.
3. Emergency response capability. If a leak is detected at 2 AM, can they get someone there within an hour? If not, find someone who can.
4. Insurance. Your home watch service should carry liability insurance. If their employee causes damage, you want coverage.
5. References from other foreign owners. The best home watch services get 90%+ of their business through referrals. Ask for five references and call all of them.

Green Season Is When It Matters Most

I cannot overstate this: July through October is when the damage happens. Higher humidity, tropical storm risk, scorpion season, and the peak of termite swarming all converge. This is exactly when many owners are back in the US or Canada, assuming their property is fine because it's "just sitting there."

Properties are not fine when they sit in 85°F heat and 70% humidity with no AC running, no one checking the drains, and a September chubasco dumping 6 inches of rain on a roof with a clogged drain. Increase your home watch frequency during green season, not decrease it.