I look at a lot of Memphis houses that investors are about to buy, and almost every expensive surprise I watch somebody walk into comes down to one distinction they didn't make.

A house can be ugly. A house can be broken. They photograph identically and they are completely different investments.

Full disclosure, I run a construction company here, so I see these from the bidding side rather than the buying side.

UGLY is cosmetic. Filthy carpet, a destroyed kitchen, forty-year-old paint, a bathroom that makes you wince, trash to the ceiling, a yard you can't see the house through. Ugly is loud, it scares retail buyers off, and it is almost entirely predictable. Ugly is where your margin lives and you should be actively hunting it.

BROKEN is a sewer line that's bellied or collapsed, a slab or pier system that's moved, water that's been running long enough to reach the framing, fire, or a house that's stood open and been stripped. Broken is quiet. It generally does not appear in photographs at all.

The cruel part is that photos are biased in exactly the wrong direction. Finish photographs well. Condition doesn't photograph. A house with new granite and a collapsed drain line looks like a deal. A house with brown carpet and a replaced sewer, panel and roof looks like a project. The second one is usually the better buy and it's cheaper.

So here's my list of what actually moves a Memphis house from ugly to broken.

The drain line. Pre-1965 stock here means cast iron, and cast iron at seventy years old is at or past the end of its life. A bellied line under a slab is five figures and it cannot be routed around, because drains run on gravity. This is the number one item and it's the cheapest one to rule out.

The foundation. We sit on clay that swells and shrinks with the season, which means both slabs and pier-and-beam move here in ways they don't in other markets. Long diagonal cracks, a previous slab patch, doors that stick seasonally, floors that slope toward one corner. Clay movement is also what breaks the cast iron underneath, so these two items are related more often than people realize.

Water that has been running for a while. Not a stain. A leak with time on it. Under a vanity, behind a toilet, around the base of the water heater, or a roof leak that's been wetting the same spot through two summers. Water is the one thing that converts a cosmetic job into a structural one, because it reaches subfloor and joists and you don't find out until something comes up.

A house that has stood open. When the copper is gone, it is almost never just the copper. It's fixtures, panel guts, the condenser, sometimes the furnace, and very often the water was left on at some point after the plumbing was cut. An open house is a different asset class from a dirty house.

Fire, including small fires. The flame damage is usually the cheap part. Smoke in the framing and whatever the fire department's water did are the expensive parts.

Structural changes nobody permitted. A wall removed with no header is the common one. You find it because of a sag in the ceiling line or a door that won't close.

What this is worth commercially: the discount the market gives you for UGLY is real and it's earnable, because cleaning and finishing is predictable work. The discount the market gives you for BROKEN is usually not big enough, because the people pricing it are guessing and guessing low. Most people who get hurt in this market didn't overpay for a bad house. They paid an ugly-house price for a broken house.

The tests are nearly free and all of them happen before you're committed. Put a camera in the sewer line. Walk the perimeter and look at grade and at the crack pattern. Open every cabinet under every sink with a flashlight. Read the date sticker on the water heater and the label on the condenser. Pull the panel cover or have somebody do it. And ask the seller in writing for the date of the last roof, HVAC, water heater, panel and sewer work.

Honest counterweight: some broken houses are the best deals available, and the people who do very well here are frequently buying exactly those. The difference is that they priced the broken part on purpose instead of discovering it in week three.

Curious what other people would add to the broken list, particularly anybody working in older stock in other markets. I'd also like to hear from anyone who bought one knowing it was broken and still made it work, because that's the version nobody writes up.