How I Saved This Rental from the Brink of Destruction
TLDRA simple maintenance call turned into an $80K structural rescue because a tenant opened a sewer cleanout instead of plunging a toilet. When you hold rentals long enough, something like this finds you. The defense is a real capex reserve and fast response on structural signals.
Table of Contents
- What Happened
- The Second Problem
- The Structural Rescue
- The AC Unit Damage
- The Crawl Space Rebuild
- What This Costs and How to Budget For It
- FAQ
- Related
What Happened
This was a performing rental a few weeks ago. Not the nicest property in the portfolio, but cash flowing and holding up fine. Then we got a maintenance call from the tenant that a toilet would not flush.
That kind of call comes in all the time across our rentals. We told the tenant to plunge it. We did not get a call back. We assumed the issue was handled.
A year later, we got a different call. Drywall was cracking. The floors had started to slope.
When we came out to the site, we figured out what had actually happened. Instead of plunging the toilet, the tenant had gone outside and opened the sewer cleanout. For months, on both sides of this duplex, every flush, every sink, every load of laundry had been dumping waste into the backyard. That waste had worked its way under the house into the crawl space.
Water sitting under a house does what water always does. The footings and the piers in the crawl space sink into the softened ground. Once they sink, the structure above starts to fail. That is the cracking drywall. That is the sloping floors.
If a tenant reports a plumbing issue and you do not hear back, that is not resolution. That is silence. Follow up. A follow-up phone call would have saved me tens of thousands of dollars here.
The Second Problem
The waste was the trigger. It was not the only issue.
This house sat in the low spot of the neighborhood. Storm water drainage on that block was not working well. Every time it rained, runoff from the whole neighborhood funneled onto this property and pooled because there was nowhere for it to go.
So I did not just have contaminated water under the house. I had rain water stacking up on top of that, every single storm, soaking the ground the structure was sitting on.
We had to solve both. Stop the sewer leak, and then figure out the drainage so the rain water would stop making the problem worse every month.
The Structural Rescue
First move was the structural engineer. You do not guess at this stuff. You get somebody with a license to tell you what needs to happen and to stand behind that work when the city inspects it.
The engineer’s plan was aggressive. Bring in dirt. Build up the yard. Stop water from being able to pool against the house.
We dumped enough dirt to raise the yard by inches. That solved the pooling. It created a new problem. The original crawl space vents, which most houses have at grade, were now buried. No ventilation, and a wet crawl space, means wet subfloors. Wet subfloors eventually fail.
We had to redesign the access and ventilation.
- Built a new crawl space access structure with its own foundation walls, so we could pile dirt around it without covering the opening
- Installed power vents to replace the vents we buried
- Added crawl space access that would survive the new grade
The rescue plan changed the yard, the crawl space, and the ventilation system at the same time.
The AC Unit Damage
While we were chasing water, we found another source.
The AC unit on the side of the house had been dripping condensation onto the brick for long enough that it was eating the brick. The water had gotten inside. The drywall in that wall was molded. We pulled the drywall out, pulled the insulation out, and found more damage than expected. We had to do the same on both units. Any spot where wood kept getting hit with water was compromised.
The rule here is simple. Water hitting the same spot over and over always wins. Always. It does not matter how tough the material is. Given enough time, water destroys it.
Pro TipOn every rental inspection, look at where AC condensation lands and where gutters drain. Chronic water in the wrong spot is a slow leak in your capex budget. Fix the drip, not just the damage.
The Crawl Space Rebuild
Once the engineer had full access, the scope got bigger. Every piece of wet wood got cut out or replaced.
| Crawl space work | Purpose |
|---|---|
| Multiple replaced floor joists | Restore structural strength |
| Replaced beams and piers | Carry the load the joists sit on |
| New footings under the piers | Stop the piers from sinking again |
| Bed of gravel across the whole crawl space | Let any future water drain instead of pool |
| Black plastic vapor barrier over the gravel | Keep ground moisture out of the wood |
| Multiple sump pumps | Pull any water that gets in back out |
| Graded floor toward the sumps | Make the water go where the pumps can grab it |
Sometimes you cannot stop water from getting into a crawl space or a basement. You can build a system that lets water in, runs it to a low spot, and pumps it back out. That is what we did here.
We also had to pull up all the subfloor to get into the crawl space cleanly. Which meant the inside of the house was gutted down to joists. Which meant new floors, new kitchen, new bathrooms when it was time to put it all back together.
What This Costs and How to Budget For It
This rescue will end up around $80K by the time the interior is put back.
That is not a number you can find in cash flow alone. It is a capex number. Capital expenditures are the big irregular hits that come for every rental eventually. Roof. HVAC. Foundation. Sewer. Water heater. Sometimes all in the same year, on the same house.
The way I handle this is simple. Every month, part of the rent money goes into a separate account marked for that property’s capex, held in escrow for the house itself. I do not rely on cash flow to absorb a surprise like this one, because cash flow cannot absorb $80K.
If you hold rentals long enough, something finds you. The reserve is the difference between a bad month and a crisis.
The broader lesson. This was a performing rental. The tenant opened a cleanout. A year later, the house was at risk of failing structurally. Rentals look passive until they are not. Build the reserve, answer the maintenance calls, and know that sometimes you just have to write the check and save the asset.
FAQ
How much should I set aside per rental for capex?
Depends on the house, but a working range is 5 to 10% of rent per month, on top of normal maintenance and vacancy reserves. Older homes sit higher in that range. Newer ones sit lower. Check in on the reserve every year and adjust.
How often should I inspect the crawl space on a rental?
At least once a year. More often if the property has a history of drainage issues or if there is a tenant reporting anything that could touch water. Crawl space problems compound quietly, and early catches are cheap.
Can I recover any of this from the tenant?
Sometimes, partially. If there is clear damage caused by tenant negligence you can pursue it through security deposit and legal channels. In practice, on an $80K hit, you will rarely make yourself whole. Focus on prevention and insurance coverage.
What should I do when a tenant reports a plumbing issue and goes silent?
Follow up. Send somebody to verify it is actually resolved. A maintenance ticket is not closed until you see the fix or the tenant confirms clearly. Silence is not a resolution.
I am a first-time landlord. Does this kind of catastrophe really happen?
Sometimes, yes. Not on every house, not every year. But if you hold a portfolio for a decade, at least one property is going to throw you a real problem. Knowing that in advance lets you build the reserve before you need it.