Interior design and millwork studios
You design the space. The code should not be the part that stops you.
Interior alterations look like the small permits and behave like the difficult ones. The scope is tight, the client is already booked, and the failures are almost never aesthetic. They are exits, occupant load, clearances and fixture counts. PermitX reads your set and names the clause.
Why the small jobs stall
The set is finished, the trades are booked, and the comment letter is about a door swing.
What comes back
Almost none of it is about the design. Nearly all of it is a dimension nobody wrote down.
An interior alteration is where design and code collide hardest. You are working inside walls somebody else placed, under an occupancy classification somebody else chose, and the moment the use changes even slightly the requirements move with it.
The findings that come back are rarely about the design. They are about the second exit that is now too far away, the occupant load that pushed the space into a different category, the washroom that needs a turning circle nobody dimensioned, and the millwork that quietly reduced a corridor below its minimum width.
Those are all knowable from the drawings. The problem has never been that they are hard to check. It is that checking them properly means reading the code against your own set, clause by clause, at exactly the point in the project when you have the least time.
PermitX does that read in minutes and gives you the list ranked, so you know what has to change before you file and what is only worth tidying.
The check, drawn
Ninety millimetres of corridor is a month of waiting.
Clear width is measured to the face of the millwork, not to the wall behind it. It is one of the most common ways an interior alteration comes back, and the fix is a joinery run that moves ninety millimetres before anything is built.
- Existing wall
- Millwork
- Required min
- Corrected
A worked example rather than a report, and drawn to its own scale, so the gap shown is the gap claimed. A real finding cites the article and names the sheet it was read off.
What a reviewer opens
Almost none of it is about the design.
Here is the sheet, with its window schedule down the right hand side. On an alteration that schedule is where a reviewer goes first, because it is where the sizes are, and the fourth row of this one has no size against it at all, so that window cannot be checked for egress.
Nearly everything that comes back is like that. A dimension string that was never drawn. A schedule left for later. An occupant load nobody calculated because the space obviously works. None of it is a judgement about your design, which is exactly why none of it should be costing you a month.
PermitX reads the set the way the reviewer does, in the order they do it, and hands you the list while the drawings are still yours to change.
What it looks at in your set
The parts of an interior set that reviewers actually return.
Every finding is cited to the clause and pinned to the sheet it came from, so you can go straight to the drawing and fix it rather than working out what the comment meant.
- OBC 3.1 Occupancy classification, and whether your change of use moved it
- OBC 3.1.17 Occupant load, and the requirements that scale with it
- OBC 3.3 Corridor and aisle widths, including width lost to new millwork or partitions
- OBC 3.4 Number of exits, travel distance to each, and door swing direction
- OBC 3.7 Plumbing fixture counts for the occupancy and load you have created
- OBC 3.8 Barrier free path of travel, clearances, and turning space dimensions
- Drawing set Clearances shown but not dimensioned, which is the most common single omission
Every finding on a real report carries the same three things: the clause, the sheet it came from, and a severity. Nothing is a hunch.
What changes for the studio
The compliance pass stops being the unpredictable part of the schedule.
Findings before the client sees a delay
You run the set through before filing, so the conversation is about a revision you already made rather than a permit that came back.
The clause, not a guess
Each finding cites the article it comes from. That is what you need to defend a decision, brief a consultant, or explain a change to a client.
One trip through the queue
The set that clears first pass frees the schedule you built the project around. The fix was always cheap. The wait never was.
Run your next alteration through it before you file.
PermitX is delivered inside Quoto Build. Upload the set, pick the municipality and the scope, and read what a reviewer would read.