How the City Catches Unpermitted Renovations

TLDR
I have been a general contractor for over a decade and flipped over 300 houses. Here are six ways the city has caught jobs of mine or jobs I have been close to. They are real. Once they see it, you are pulling permits no matter what.

Table of Contents

1. Google Earth

This one is not clickbait. It actually happened to me.

I was building out a commercial space for a new tenant. Change of use, so the permit scope was wider than normal. The hvac had been replaced a few years earlier for the previous tenant, so I planned my whole buildout around not having to touch HVAC.

The city emailed me saying I needed a mechanical engineer to draw HVAC plans. I told them the HVAC was brand new. They emailed me back with a Google Earth image from a few years before, showing no HVAC unit on the roof.

They are pulling aerial imagery and comparing it to permit records. Additions, HVAC units, new roofs, pools, sheds. All visible from above. If the city’s imagery has something your permit history does not, they are going to ask.

2. Listing Photos

Flipping a house that started as a cosmetic. The contractors found roof issues, then siding issues, then window issues. The scope ballooned. That is what happens on a remodel. You start and find more.

We took it to market. Listing photos went up. Next thing I know there is a red tag on the front door.

Somebody with time at a desk was looking through listing photos and cross-checking the permit record. They found enough work to justify a stop-work order, and part of the cure was opening walls to verify what had been done behind them.

Common Mistake
Assuming nobody is watching the MLS. In some cities the workload is too high for this. In plenty of cities there is someone whose job is exactly this. Check your city before you bet on it.

3. The Angry Tenant

Rental with tenants. They wanted cabinets painted, cosmetic upgrades, stuff that did not affect their living situation. Answer was no. Doing every cosmetic a tenant wants mid-lease is how landlords stop being profitable.

They got angry. They called the city about things that were not even related to their complaint. The city came in, condemned the property, and made me rewire the whole house. Rewiring a house that is not gutted is expensive, around $12,000. Plumbing came up too. Basically the whole gamut. Things that would have stayed grandfathered in a normal situation all got touched because the inspector was already in there.

Irony: their revenge condemnation is what moved them out.

4. The Goody Two-Shoes Real Estate Agent

Buyer’s agents are working for their client. A good one will look for anything that might hurt the buyer. An aggressive one will call the city to check on unpermitted work before closing.

I have also seen other agents call complaints in on unrelated things just to stir a pot. Recently an agent filed a complaint that our real estate brokerage’s license was overdue. It was not. It was a clerical error on the state side. The agent called anyway.

Do you think that type of agent calls the city on your unpermitted flip? Yes. They do.

5. The Driveby

Dumpsters in the front yard. Construction debris. Piles of trim. That is a billboard for codes enforcement. They drive by, they see it, and sometimes they walk right up to the property.

I have seen code enforcement go into houses without being invited. Looking through windows, going inside when the door is open. I do not know where the legal line is and that is not what this article is about. I know that once they red tag it, you are in for the full treatment.

Even if you are doing something a reasonable person would call cosmetic, a dumpster out front and visible demo debris can get you tagged. Once the tag goes up, there is no going back.

6. The Neighborhood Patriarch

Early in my career, before I was a GC, there was one guy. His house sat on a hill behind the property I was working on, with a deck that looked right down into my job site.

He introduced himself. “I am kind of the patriarch of this neighborhood.” The second we started working, the city showed up asking what we were doing. He called them every time someone parked a truck near my house.

Every neighborhood has one. Sometimes it is a retiree with time. Sometimes it is the guy who had a bad experience with a flipper five years ago and never got over it. Sometimes it is a neighbor who thinks your dumpster is lowering their values.

Your neighbors are part of your permitting risk. Introduce yourself on day one. Ask if they have questions. It is cheaper than a red tag.

Grandfathering Versus Replacement

Here is the part people miss. Grandfathering says that if something was installed to code at the time it was installed, and you are not touching it, it can stay. Codes change. A 1975 install that met 1975 codes can stay in 2026, even though 2026 codes are tighter.

The catch: once the city is inside because of a permit or a complaint, they tend to lean toward replacement. If the wiring is knob and tube, exposed, and actually dangerous, that was going to come out anyway, and you do not want to grandfather it. That is safety and liability territory. If the wiring is modest but functional and met code when it went in, you would normally leave it. Once an inspector is in that house with a complaint on file, leaving things is harder.

This is the real cost of getting caught. Not just the permit fee. The scope expansion on everything adjacent once the city is inside.

FAQ

Do I have to pull permits on every renovation?

No. A cosmetic renovation with no mechanical, electrical, or plumbing work is usually fine without permits in most municipalities. The problem is that cosmetic jobs expand. One day you are painting, the next day you are replacing a panel. The scope creep is where the risk lives.

What happens when the city catches me?

Stop work order, permit fees with penalties, and a scope expansion because they will want to inspect adjacent systems. The $3,000 permit you skipped can turn into a $15,000 retroactive bill once they are inside.

How do I handle the neighborhood patriarch?

Introduce yourself on day one. Hand him a business card. Tell him what you are doing and roughly how long it will take. Ask him to call you if anything looks off. Most of the time this alone disarms him.

What’s a red tag?

A physical notice, usually red, posted on the property by the city that orders work stopped until permits are pulled or violations are cured. You are not allowed to do any more work until it is lifted. They are the single most expensive thing you can get on a job.

Are there renovations where I should always pull permits?

Yes. Structural work, additions, anything moving electrical panels or adding circuits, gas work, and major plumbing changes. Also any hvac system swap. These are the jobs where skipping permits catches up to you on the resale side even if the city never shows up.