QA Your Engineers' Work Before the City Does

You Trust Your Engineers. The City Plan Checker Does Not.

You hire 3rd-party engineers for civil, structural, and MEP because that is what production pace requires. Reviewing 150+ sheets of civil plans manually before submission is not feasible across multiple active subdivisions. But the AHJ reviews every sheet the same way regardless of who drew them, and every comment adds 2 to 4 weeks to your permit cycle. The gap is not your engineers' competence. It is the absence of a systematic pre-submission check that runs at the same standard the city applies.

One Comment Across a Subdivision Is Not One Comment

A datum conflict or a utility separation violation that recurs across a subdivision means the same correction on every lot. Developer plan review at scale means a single undetected issue in the base civil set multiplies through the permit queue. Every week of permit delay is a week of holding costs on land and construction loans. The cost of catching an issue before submission is the time to fix it. The cost of catching it after is that, plus a resubmission round, plus the delay.

Code Reference Errors Are the Least Visible Until the City Finds Them

Your engineers work across multiple projects and multiple jurisdictions. Wrong code edition, missing local amendments, cross-sheet code inconsistencies are the most common cause of plan check rejection and the hardest to catch in a manual pass. AI flags them before submission. The city flags them after, with a correction letter attached. Permit prep review starts with the code reference layer, because code-year drift is the class of error most likely to generate a rejection on the first round.

Civil Engineering Review

The Civil Checker targets the class of issues that generate the most plan check comments on residential submittals: datum conflicts between NAD83 and NAVD88 within the same set, utility separation violations where water mains sit too close to sewer, gravity flow direction errors where pipe inverts do not drain, water main conflicts with storm infrastructure, and missing erosion control and SWPPP details. Each finding references the specific sheet and detail where the issue appears. These are not edge-case errors. They are the repeating failure modes that appear across residential civil sets at production volume.

Code Reference Verification

The Building Codes Checker flags wrong code editions, missing local amendments, and cross-sheet code inconsistencies before the city does. Code-year drift is particularly common when engineers carry notes forward from previous projects or from sets drawn for different jurisdictions. A single wrong code edition reference can trigger a correction letter on an otherwise clean set. The checker surfaces those errors before submission, when fixing them costs an hour, not a resubmission cycle.

Cross-Discipline Coordination

The Constructability Checker catches the coordination gaps between consultant disciplines that no single consultant is positioned to catch. Civil vs. architectural conflicts, grading plan inconsistencies with building footprint changes, cross-discipline sheet conflicts where one engineer's set contradicts another's are the issues that fall through the space between disciplines. On production homebuilder projects, these conflicts are especially common because civil, structural, and MEP are drawn by different firms working on overlapping schedules with limited coordination time.

Portfolio-Scale QA

The same review runs across all subdivisions, all consultants, and all markets at the same standard. There are no per-seat fees. Your entire team accesses the platform, and findings export to Excel for tracking issue patterns across divisions, jurisdictions, and consultant teams. For homebuilders running 20 or more subdivisions, consistent QA standards across consultant relationships is a baseline operational requirement, not a project-by-project decision.

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36 Issues Found Across Five Disciplines Before Permit Submission|Compare AI plan check tools

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36 Issues Found Across Five Disciplines Before Permit Submission

On a residential project reviewed before permit submission, InspectMind returned 36 issues across electrical, architectural, plumbing, structural, and mechanical disciplines. The design team resolved them internally before the AHJ saw the drawings, avoiding a correction cycle that would have pushed the permit timeline by weeks.

Carriger Road Sonoma: 47 Structural Issues on a California Residential Project

On a residential project in Sonoma County, California, InspectMind identified 47 structural issues before the drawings reached the building department. California residential submittals face some of the most detailed AHJ review in the country, and correction letters from a California plan checker carry real schedule risk. Resolving 47 issues before submission removed those risks from the permit timeline entirely.

507 Issues on One Project: What a Full Civil Set Review Returns

On one production homebuilder project, a single InspectMind review returned 507 issues across the civil, structural, and MEP sets before submission. That volume is not typical, but it is also not unprecedented. At production pace, with multiple consultants drawing in parallel and limited time for cross-discipline coordination, the number of issues that pass through manual QC without detection is higher than most teams expect until they run the first review. The 5+ issues or full refund guarantee means the review cost is zero if the findings are not there. On a full civil set, they are almost always there.