FIELD NOTE · SUPPLEMENTAL SET
The Demolition Permit Does Not Predict the Rebuild. It Arrives With It.
ISSUEDJULY 11, 2026DRAWN BY THE NIGHTLY SWEEP
Twenty-nine of fifty-five demolition permits filed their follow-on the same day. In the PermitFeed corpus, 604 demolition permits carry a usable street address. Fifty-five of those show a follow-on at the same address, new construction, grading, an ADU, a rebuild. Twenty-three more got it within thirty days. Three came in under ninety. None came later.
The trade story runs the other way. A teardown is supposed to be the first domino, with the rebuild far behind it and a long runway to work the lead. The record refuses to tell that story. Where the record speaks at all, it says everything at once.
State the limit before leaning on the number. This corpus is young. Nightly scraping began July 5, 2026, and its demolition filings span May 7 through July 27. A lag longer than about eleven weeks cannot show up yet, because nothing in the data has had time to lag that long. The slow projects may exist. We cannot see them. What we can see is the early window, and in the early window the follow-on does not trickle. It arrives as a package.
Los Angeles reaches the same place through licensing. A demolition permit there goes to a C-21 wrecking contractor or a Class A general engineering contractor, with a notarized owner letter or a copy of the signed contract. A Class B general contractor can pull one only if he is the contractor for the new building on that same site and plans for the new building are already filed, and only for a one-story Type II or V structure. Read that from the feed side. A Class B name on an LA demo permit means the replacement is already in the system. The record said so before anybody said anything.
Los Angeles adds a second clock for older buildings. A structure more than 45 years old cannot get a demolition permit until 30 days after written notice goes out. It goes by mail to the abutting owners and occupants, the council district office, and the neighborhood council. A placard goes up on the property. It reads NOTICE OF DEMOLITION, block letters, three inches high. LA also sends a building inspector to the site before issuance, one pre-inspection per building. San Diego runs its clock on the far side of the counter. Work there must start within 60 calendar days of issuance and finish within 120, with one 60-day extension available. Nobody in that chain is guessing at a schedule. The schedule is filed.
THE CLOCKS THAT RUN BEFORE THE SWING, IN DAYS RULE 1403 NOTICE TO THE AIR DISTRICT 10 LA NOTICE, BUILDINGS OVER 45 YEARS 30 SAN DIEGO WINDOW TO START AFTER ISSUANCE 60
Residential teardowns carry one more filter. Where protected units would come down, Government Code 66300.6, as amended effective January 1, 2026, conditions the approval. The project must replace all protected units demolished on or after January 1, 2020. Existing occupants stay until six months before construction starts. Lower-income occupants get relocation benefits and a right of first refusal for a comparable unit in the new development. A demolition that clears that section is not a speculative teardown. It is a housing project with its replacement math already done.
An interior soft demo still reads differently. That filing is the opening move of a tenant improvement, and the buyer behind it is a general contractor rather than a developer. The corpus does not yet hold a number for how fast that sequence runs, so this post will not invent one.
The counts here come from 28,211 permits across 44 cities in six SoCal counties, 622 of them demolitions. The address matching is conservative, so the 55 pairs are the follow-ons the record shows plainly, not the whole population. PermitFeed reads those filings nightly for demolition contractors and puts the demo, the address, and the follow-on in one view. The record files first. The contractor who reads it moves inside the notice window, and everyone else learns about the project from the fence.
The trade story runs the other way. A teardown is supposed to be the first domino, with the rebuild far behind it and a long runway to work the lead. The record refuses to tell that story. Where the record speaks at all, it says everything at once.
State the limit before leaning on the number. This corpus is young. Nightly scraping began July 5, 2026, and its demolition filings span May 7 through July 27. A lag longer than about eleven weeks cannot show up yet, because nothing in the data has had time to lag that long. The slow projects may exist. We cannot see them. What we can see is the early window, and in the early window the follow-on does not trickle. It arrives as a package.
The package is policy
Two jurisdictions wire the package into the counter itself. Beverly Hills makes it the default path: the demolition permit issues at the same time as the replacement building permit. Tearing down ahead of a replacement permit is the exception there. It applies only in certain circumstances, takes Community Development approval, and carries landscape and maintenance plans, a recorded covenant, and a Vacant Lot Bond. The city has priced what a hole is worth.Los Angeles reaches the same place through licensing. A demolition permit there goes to a C-21 wrecking contractor or a Class A general engineering contractor, with a notarized owner letter or a copy of the signed contract. A Class B general contractor can pull one only if he is the contractor for the new building on that same site and plans for the new building are already filed, and only for a one-story Type II or V structure. Read that from the feed side. A Class B name on an LA demo permit means the replacement is already in the system. The record said so before anybody said anything.
The clocks that run before the swing
The lead time a contractor actually gets is not the gap after the demo. It is the stack of clocks that run before issuance, and every one of them is public. South Coast AQMD Rule 1403 requires notice to the district for any demolition, asbestos or none, no later than 10 working days before the work begins. The rule counts working days Monday through Friday with holidays included, so the notice is two calendar weeks, and it does not count as received until the fee comes with it. Before that notice can be honest, the building gets surveyed by a Cal/OSHA certified inspector, down through every flooring layer to the joists and into the wall and ceiling cavities. Asbestos-containing material comes out before any machine touches what holds it.Los Angeles adds a second clock for older buildings. A structure more than 45 years old cannot get a demolition permit until 30 days after written notice goes out. It goes by mail to the abutting owners and occupants, the council district office, and the neighborhood council. A placard goes up on the property. It reads NOTICE OF DEMOLITION, block letters, three inches high. LA also sends a building inspector to the site before issuance, one pre-inspection per building. San Diego runs its clock on the far side of the counter. Work there must start within 60 calendar days of issuance and finish within 120, with one 60-day extension available. Nobody in that chain is guessing at a schedule. The schedule is filed.
THE CLOCKS THAT RUN BEFORE THE SWING, IN DAYS RULE 1403 NOTICE TO THE AIR DISTRICT 10 LA NOTICE, BUILDINGS OVER 45 YEARS 30 SAN DIEGO WINDOW TO START AFTER ISSUANCE 60
Issuance, by name
The rest of the pre-swing record is city-specific, and the names matter. A generic checklist does not survive contact with the documents. Statewide, the 2025 Building Code, in force since January 1, 2026, requires service utility connections discontinued and capped, Section 3303.6, and leaves the mechanics to the local authority. Los Angeles requires a sewer cap under its own plumbing permit, and the cap stays open to view until an inspector sees it. San Diego wants an SDG&E Certificate of Discontinuance of Service for each building and the sewer capped within five feet of the property line. Beverly Hills wants electrical, gas, telephone, and cable disconnected, the water left live for dust control, a rodent report certifying the building free of rats before issuance, and a photograph of the building it is about to lose.Residential teardowns carry one more filter. Where protected units would come down, Government Code 66300.6, as amended effective January 1, 2026, conditions the approval. The project must replace all protected units demolished on or after January 1, 2020. Existing occupants stay until six months before construction starts. Lower-income occupants get relocation benefits and a right of first refusal for a comparable unit in the new development. A demolition that clears that section is not a speculative teardown. It is a housing project with its replacement math already done.
What the read becomes
So the read changes shape. The follow-on permit is not a distant event to wait for. In this record, 52 of 55 visible follow-ons landed the same day or inside thirty days. By the time a demo hits the feed, its notice clocks are already running. Where the rebuild is visible at all, it is usually already filed. The project did not announce itself early. It surfaced whole. The response window for the trades downstream is the pre-swing period, the Rule 1403 notice, the 30-day placard, the package sitting in plan check, not an imagined year after the dust.An interior soft demo still reads differently. That filing is the opening move of a tenant improvement, and the buyer behind it is a general contractor rather than a developer. The corpus does not yet hold a number for how fast that sequence runs, so this post will not invent one.
The counts here come from 28,211 permits across 44 cities in six SoCal counties, 622 of them demolitions. The address matching is conservative, so the 55 pairs are the follow-ons the record shows plainly, not the whole population. PermitFeed reads those filings nightly for demolition contractors and puts the demo, the address, and the follow-on in one view. The record files first. The contractor who reads it moves inside the notice window, and everyone else learns about the project from the fence.