A permit delay is not an abstraction. Every week a project sits in plan examination is a week of carrying costs, delayed revenue, and schedule compression downstream. At a construction loan rate of 7%, a 60-day approval slip on a $20M project costs roughly $230,000 in additional interest alone — before accounting for trades sitting idle, lease commencement penalties, or a construction season missed.
What drives those delays is rarely random. Plan examiners have patterns. Zoning objections behave differently from building code objections. Certain filing types, in certain boroughs, with certain documentation gaps, produce predictable outcomes. The problem has always been that no one had enough data to prove it.
BuildNYC indexed 412,889 plan examiner objections from NYC DOB NOW, spanning every borough, every filing type, every trade, from 2022 through early 2026. This is what we found.
The Examiner Variance Problem
The most striking finding in the dataset is not about code sections or borough patterns. It is about who reviews your filing.
Across 426 active plan examiners profiled in the dataset, objection rates range from 10% to 85%. The fastest examiner in the Manhattan fire protection cohort averages 14 days from submission to clearance. The slowest averages 89 days. Both are reviewing the same filing types, in the same borough, under the same code.
43% objection rate
85% objection rate
That 75-day gap is not a rounding error. It is the difference between a project that starts on schedule and one that doesn't start at all in a given construction season. And it exists entirely within the same trade, same borough, same filing class.
The variance is not attributable to project complexity alone. Controlling for filing type and work scope, individual examiner behavior explains a significant share of outcome variation. Some examiners concentrate objections in specific code areas — riser diagram detailing, hydraulic calc documentation, scope narrative sufficiency — and clear everything else efficiently. Others apply broad scrutiny across categories. The patterns are consistent across time, which means they are identifiable in advance.
This has an obvious implication for anyone who files in volume: the document that gets submitted matters less than the examiner who reviews it. Not because quality is irrelevant — it is not — but because a filing that would clear in 14 days with one examiner may trigger 12 objections and sit for 89 days with another reviewing identical drawings. Knowing who you are likely to get, and what they scrutinize, is a material advantage.
Zoning Is the Slow Lane
The second major finding: zoning objections are categorically harder to resolve than building code objections, and they are far more common than most practitioners realize.
of all plan examiner objections in the dataset cite the Zoning Resolution — and take, on average, twice as long to clear as objections citing the Building Code or Mechanical Code.
The reason is structural. Building code objections — missing a calc, wrong riser dimension, insufficient sprinkler spacing — are largely binary. You either have the document or you don't. You either meet the spec or you adjust it. The resolution path is predictable.
Zoning is different. The Zoning Resolution requires interpretation. FAR calculations involve judgment calls on how floor area is measured. Use group classifications depend on how a space is described. Rear yard depth compliance depends on where setback lines are drawn and whether pre-existing non-conformity arguments apply. These disputes can run multiple rounds not because anyone is wrong, but because the standard requires elaboration, not correction.
The most cited zoning objection in the dataset is ZR 32-00 — Use Group compliance for mixed-use buildings. It has appeared in 3,400+ filings since 2022, with an average resolution time of 41 days and a first-round clearance rate of 68%. That 68% sounds acceptable until you realize it means nearly one in three of those filings required at least two rounds of examiner review — adding, on average, three to five additional weeks per cycle.
The compounding problem: A filing that misses first-round clearance on a zoning objection doesn't just add one round trip. It restarts the examiner queue. In high-volume periods, that queue position may take two to four weeks to reach. A single missed first-round clearance on a zoning item can add six to ten weeks to total resolution time — not three.
Analysis of 847 resolved ZR 32-00 cases reveals that 91% of filings that cleared in one round trip contained three specific elements: a use group compliance matrix listing each occupancy with its ZR citation, an occupancy separation narrative referencing ZR 32-00(b), and a floor area breakdown by use. Filings missing any one of these three elements were significantly more likely to require a second round.
- 01 A use group compliance matrix — each occupancy type listed with its explicit ZR table citation. Not a narrative description. A structured cross-reference.
- 02 An occupancy separation narrative citing ZR 32-00(b) directly. Examiners raising use group objections are checking whether the applicant has addressed separation — the narrative signals that this has been considered, not just the floor plan drawn.
- 03 A floor area breakdown by use. Mixed-use buildings require examiners to verify that ZR floor area limits are not exceeded for any single use. Providing this explicitly eliminates the most common follow-up request.
The Most Cited Codes — and What Clears Them
Across the full dataset, a small number of code sections account for a disproportionate share of objections. The distribution follows a power law: the top 20 code sections by citation volume account for more than half of all objections issued. Understanding these sections — and what the cleared filings did differently — is where the practical value of 412,000 cases concentrates.
| Code Section | Objection Volume | Avg Days | First-Round Clear | Category |
|---|---|---|---|---|
| C-2.1 | 12,000+ | 28 days | 73% | Sprinkler — Hydraulic Calcs |
| ZR 32-00 | 3,400+ | 41 days | 68% | Zoning — Use Group / Mixed-Use |
| ZR 23-461 | 1,800+ | 33 days | 64% | Zoning — Rear Yard Depth |
| Q-1.0.a | High volume | 14 days | 88% | Scope Narrative — Work Type Classification |
| C-3.4 | Moderate volume | 31 days | 65% | Sprinkler — Riser Diagram Detail |
| ZR 23-00 | Moderate volume | 45 days | 58% | Zoning — Bulk / Dimensional |
The C-2.1 entry deserves particular attention. With more than 12,000 instances, it is the single most cited objection in the dataset — but it has the highest first-round clearance rate among high-volume codes. The pattern is consistent: filings that cross-reference the hydraulic calculation to the riser diagram and cite NFPA 13-2019 §22.4 explicitly clear at 73%. Those that submit the calc without the cross-reference clear at a substantially lower rate, even when the underlying calc is correct. The examiner needs to see the connection documented, not just submitted.
Q-1.0.a — scope narrative sufficiency — is notable for a different reason. It has an 88% first-round clearance rate and a 14-day average resolution time when raised. It is, in other words, almost entirely preventable and almost entirely resolved without friction when it does occur. Yet it consistently ranks among the highest-volume objection categories, particularly in Brooklyn. It represents a category of delay that disappears almost entirely when the scope narrative explicitly classifies the work type in its opening paragraph.
Borough Patterns
Objection rates and resolution times are not uniform across the five boroughs. The data shows meaningful structural differences that reflect both the nature of the building stock in each borough and the composition of the examiner pool assigned to each.
The Queens concentration risk warrants specific attention. When a single examiner handles more than a quarter of all filings in a given trade and borough, that examiner's individual patterns become statistically dominant for practitioners working in that market. In the Queens FP cohort, the single most predictive variable for approval time is not project scope or drawing quality — it is whether the flow test report is current (within 12 months) and attached as a labeled exhibit. That insight is invisible without data. With it, it is straightforward to act on.
What the Data Says About the First Round Trip
The economics of plan examination concentrate at a single decision point: whether your filing clears in the first round trip.
A first-round clearance means resolution in roughly the average time for that code section. A second round trip adds the examiner's review queue wait time on top of the revision period — in high-volume periods, that queue wait alone can be two to four weeks, separate from the time to prepare the response. A third round trip compounds again.
The difference between a 73% first-round clearance rate (C-2.1, with proper documentation) and a 58% first-round rate (ZR 23-00, without explicit bulk compliance documentation) sounds like a 15-point gap. In practice, applied across dozens of filings in a year, it translates to a material difference in average project timeline and carrying cost burden.
Added per additional round trip on a zoning objection — not just the revision time, but the examiner queue re-entry wait. A single missed first-round clearance on ZR 23-00 or ZR 32-00 commonly adds six to ten weeks total.
The practical implication is that the investment in getting a filing right before submission — cross-referencing calcs, adding the use group matrix, classifying the scope narrative, attaching the stamped survey — is almost always justified in time-value terms. The documentation that prevents a second round trip costs hours to add. The second round trip costs weeks to resolve.
This is where past resolution responses become directly valuable. When you know that ZR 32-00 clearances at 91% first-round rate use three specific structural elements — and you know exactly what those elements look like because you have 847 cleared responses in front of you — you are not guessing at what the examiner wants. You are replicating a proven pattern. The same is true for C-2.1, for ZR 23-461, for Q-1.0.a. The data exists. The question is whether you have access to it.
Trends Worth Watching in 2026
Several patterns in the dataset suggest where objection pressure is increasing heading into 2026.
Mixed-use filings are growing in complexity. As more buildings convert commercial upper floors to residential under the City of Yes housing initiative, ZR 32-00 and ZR 32-10 use group objections are appearing in filing types that historically didn't trigger them. Architects and expediters accustomed to straightforward residential alteration review are encountering zoning scrutiny they weren't expecting — and submitting without the documentation patterns that clear it efficiently.
Rear yard and setback objections are increasing in the outer boroughs. Density pressure in Brooklyn and the Bronx is pushing more projects to the edges of their zoning envelopes. ZR 23-461, ZR 23-00, and related dimensional provisions are appearing with higher frequency in borough filings that previously concentrated on scope and mechanical objections. The pre-existing non-conformity framework is being tested more often — and it requires specific documentation (current stamped survey, explicit non-conformity statement) to succeed.
Scope narrative objections remain entirely preventable. Q-1.0.a has appeared in the top objection codes for three consecutive years. It is the clearest signal in the dataset that a large share of filing delay is not about code complexity — it is about documentation that a practitioner could add in an afternoon. The fact that this objection continues to appear at high volume suggests the signal has not fully diffused to the filing population.
Examiner concentration risk is increasing in Queens. As filing volume grows and examiner headcount does not scale proportionally, single-examiner concentration in specific trade-borough combinations increases the volatility of outcomes. A reviewer change, a leave period, or a backlog event at a concentrated examiner creates outsized delay for every practitioner filing in that cohort simultaneously.
BuildNYC gives architects, expediters, and filing attorneys direct access to the full objection dataset — searchable by code section, borough, filing type, and examiner. See resolution patterns, clearance rates, and the language that actually cleared the examiner before your submission, not after.