You know what “30 years in business” tells me? That the guy managed to stay solvent. That’s it. It doesn’t tell you if he’s ever framed a hip roof, retiled a shower over a rotten pan, or opened up a plaster wall in a 1920s Philly rowhome without half the ceiling coming down with it. Years on this planet and years spent doing your specific job are two very different animals.

Here’s the truth homeowners keep missing. The only experience that matters is the experience that maps directly onto your project. A contractor who’s built forty custom decks is going to run circles around a general handyman who’s been “in the trades” since Reagan. Not because the handyman is dumb. Because he doesn’t know where deck jobs go sideways. He hasn’t cut into a ledger board that was rotten behind the flashing. He hasn’t argued with a township inspector about lag bolt spacing. The forty-deck guy has. That’s the difference.

I got called out to a job in Roxborough a few years back where a homeowner had hired a “30-year veteran” to convert a garage into a heated in-law suite. The guy had never done a garage conversion in his life. He framed the interior walls tight to the slab with no vapor barrier, insulated the exterior walls with the wrong R-value for a below-grade block wall, and skipped the perimeter thermal break entirely. Twelve months later the drywall was black with mold from the floor up two feet. I opened one wall and knew immediately — this wasn’t a bad contractor. This was a decent contractor doing a job he’d never done before, guessing at every step. The homeowner paid twice. Once to build it wrong. Once to have me tear it out and do it right.

That’s the real cost of hiring “experience” instead of hiring the right experience.

Stop asking how long. Start asking how many.

When you interview a contractor, drop the “how long have you been doing this” question. It’s useless. Ask this instead:

“How many of these specific jobs have you done in the last three years?”

If you want a kitchen remodel, ask how many kitchens. If you want a basement waterproofed, ask how many basements — and which method he used and why. A guy who’s done twenty of your exact project in the last three years is going to catch problems on your job before you even know they’re problems. That’s what real experience does. It’s pattern recognition.

Vague answers are a red flag. “Oh, plenty” is not an answer. “Six last year, two of them in South Philly rowhomes like yours” is an answer.

Ask where it goes wrong.

This is the question that separates the guys who know their trade from the guys who talk about it:

“What’s the part of this job that usually causes problems?”

If the contractor can’t answer that clearly and specifically, walk. Every real trade job has a known failure point. Bathroom remodels — it’s the shower pan and the subfloor around the toilet flange. Additions — it’s the roof-to-wall flashing where new meets old. Repointing brick — it’s using the wrong mortar mix and cooking the brick face over the next ten winters. Finished basements — it’s moisture management, and if he starts with “we’ll frame it out with a nice moisture barrier,” you’re already in trouble.

A guy who’s done your job before knows exactly where it goes wrong. He’ll tell you, and he’ll tell you how he handles it. A guy who hasn’t will give you a smooth, general answer that sounds good and means nothing.

Look at photos of the ugly parts.

Everyone can show you a finished kitchen. Big deal. Ask to see photos from the middle of the job — the demo, the framing, the rough plumbing, the moment the walls were open. That’s where you see actual craftsmanship. Nice tile over sloppy framing is still sloppy framing. You just can’t see it anymore. Three years from now when something moves or leaks or a cabinet pulls off the wall, you’ll wish you’d looked at the bones.

If a contractor says he doesn’t take photos of the rough stages, that’s telling you something too. Guys who are proud of the invisible work document the invisible work.

Check references from jobs that match yours.

References are worthless if they’re from the wrong kind of job. A guy who’s happy with his deck rebuild tells you nothing about how the same contractor handles a whole-house repipe. Ask the contractor for references from projects like yours — same scope, same age of house, ideally same neighborhood. Then actually call them. Ask if anything went wrong, because something always does. What you want to hear isn’t “nothing went wrong.” It’s “yeah, they hit X, and here’s how they handled it.” That’s a contractor who owns his work.

The bottom line

Hire the contractor who’s done your project — not a project, your project — more times than he can count off the top of his head. Years in business is a vanity metric. Reps on your specific job is the only number that matters. The guy who’s done fifty of these has already made every dumb mistake there is to make. On somebody else’s house. Not yours.

Ask better questions. Get better answers. Get a better job.