Twenty percent of the job is the accessibility budget, and the code spends it in order

You bid a tenant improvement. Reception, three offices, new flooring, some demising walls, a bit of power. The number went out, the client signed, and plan check has come back asking for the front entrance, the path from the parking lot, the restroom down the hall and a van accessible stall none of which are in your drawings, your scope or your price.

Nobody is picking on you. You touched an area containing a primary function, and California attaches an upgrade obligation to the route that serves it. The good news is the obligation has a ceiling, the ceiling is a percentage of your own contract value, and the code tells you exactly what order to spend it in. Once you know that, the accessibility exposure on a tenant improvement goes from an open ended risk to a line item you can price before you sign.

Two chapters, one federal statute, and they are enforced by different people

California accessibility lives in two chapters of the California Building Code. Chapter 11A covers multifamily residential: apartments, condominiums, the covered dwelling units and the common areas that serve them. Chapter 11B covers public accommodations, commercial facilities and public buildings, which is where nearly all tenant improvement work lands.

Running alongside both is the federal Americans with Disabilities Act and its 2010 Standards. That is a separate obligation with a separate enforcement route, and the difference in route is the entire practical problem. Chapter 11B is checked by the building department before you build. The ADA is enforced afterwards, by private suit, against the business operating in the space. A permit signed off does not close the federal question.

Where the two overlap, the stricter provision governs, and California is frequently the stricter one. Build to the approved 11B drawings and you have satisfied the department. Build the field dimensions to the tolerances further down this page and you have also removed most of what a demand letter gets written about.

Why a paint and carpet job pulled in the restroom

The trigger is in CBC s.11B-202.4. When an alteration affects, or could affect, the usability of an area containing a primary function, the path of travel to that altered area has to be made accessible, along with the restrooms, telephones and drinking fountains serving it.

A primary function area is where the major activity of the building happens. Offices, retail sales floors, dining areas, meeting rooms, the shop floor. It is not the janitor's closet and it is not a mechanical room. The reason ordinary tenant improvement work keeps landing on the trigger is that ordinary tenant improvement work is almost always in a primary function area by definition, because that is the part of a building tenants pay rent for.

The path of travel is the whole route, not just the doorway: the pedestrian route from public transportation, accessible parking and the public street, through the site, in at the entrance, and along the corridor to the altered area. Section s.11B-202.4 also lists exceptions for work that does not touch a primary function, and reading them is a bid decision rather than a legal exercise. Work confined to a mechanical or electrical system, or to elements that do not affect usability, sits differently from work that reconfigures the space people use.

Settle it before the number goes out, not after. The question is short: does my scope touch an area where the major activity happens? If yes, price the path of travel.

The cap, the priority order, and the threshold that moves every year

Here is the part that turns this from a nightmare into arithmetic. Under CBC s.11B-202.4 Exception 8, when the adjusted construction cost of the alteration is at or below the current valuation threshold, the cost of complying with the path of travel requirement is limited to 20 percent of that adjusted construction cost. Above the threshold, the path of travel complies in full.

The valuation threshold is republished every year, so the figure that matters is the one in force when you apply for the permit, which is the same rule that fixes which edition of the code your job is built to (CBC s.1.1.8). Do not carry last year's number in your head. Read it at bid time, once, and write it on the bid sheet. That single habit is worth more than any general knowledge of the chapter, and it is covered alongside the rest of the permit conditions in how Title 24 and CALGreen attach to your job.

The federal side has its own version of the same idea. Under 28 CFR s.36.403(f), alterations to the path of travel are required up to 20 percent of the cost of the alteration to the primary function area, beyond which they are treated as disproportionate.

When the cap applies, the code does not let you pick the cheap items. Section s.11B-202.4 sets the order in which the money gets spent:

Work down that list until the budget is used. Then stop, and document where you stopped and why.

Run it on a real job. Adjusted construction cost of the alteration is $220,000, and the permit application goes in on Monday 9 March 2026, so the threshold and the code edition in force on that day are the ones that apply.

Those job costs are yours to establish from your own pricing, and they are the reason the exercise works. The cap is fixed by the code, the order is fixed by the code, and the only variable is what the work costs, which is a thing you already know how to figure. That is a bounded, priceable exposure sitting inside a subject with a reputation for being unbounded. Put it on the bid as its own line, with its own markup, the way you would price any other allowance. The markup and margin calculator will land the number you actually need to carry it.

One more piece of the same mechanism: where full compliance is not achievable, unreasonable hardship is a determination made by the enforcing agency on documented facts, not a judgment you make in the field. If your job is heading there, it gets raised at plan check with the supporting information, and the finding goes in the permit file. A verbal from an inspector is not the finding.

What the client is actually asking you when they mention CASp

A Certified Access Specialist is a person, certified by the Division of the State Architect, who inspects a property for compliance with construction related accessibility standards (Civ. Code s.55.53). The program produces two things, and they are not the same thing.

An inspection report is what you get when the site has problems. It lists them, and it can carry a schedule for fixing them. That report is confidential to the owner or tenant who commissioned it (Civ. Code s.55.53), which matters because owners are often nervous about creating a document listing their own defects.

A disability access inspection certificate is what a CASp issues when the premises meets the applicable standards. That is the certificate people mean when they say a building is CASp certified.

Both outcomes carry weight for the property owner. A defendant whose premises has been inspected by a CASp gets access to procedural protections in a construction related accessibility claim, including a stay of proceedings and an early evaluation conference (Civ. Code s.55.54). That is the reason owners commission the inspection, and it is worth understanding, because it explains why the phone rings.

For you, the CASp report is the best scope document you will ever be handed. It is written by somebody who measured the building, it is itemized, and the client already believes it. A contractor who can read one, price it in the priority order and schedule the work around an operating business is competing against contractors who are guessing. If your work is in occupied commercial buildings, this is a lane worth owning, and it sits naturally next to the classification scope in the B general building guide.

Every commercial lease has to say whether the building was inspected

This is the quiet demand generator. Under Civ. Code s.1938, a commercial property owner or lessor has to state in the lease or rental agreement whether the property has been inspected by a CASp, and if it has and was determined to meet the applicable standards, whether a copy of the report is available. If it has not been inspected, the lease has to say so and carry the statutory notice telling the lessee they can request one.

Read what that produces in the market. Every commercial lease signing in California puts the accessibility question in front of a tenant in writing, at the moment they are already spending money on the space. A meaningful share of those conversations turn into a survey, and a survey turns into a corrections scope, and that scope is doors, hardware, thresholds, restroom reconfigurations, ramps, striping and signage. It is exactly the work a small commercial contractor can do well and quickly.

Being the contractor who understands the disclosure, the report and the priority order is a positioning decision, not a licensing one. Property managers with a portfolio have this issue on every building they hold.

The field dimensions are where compliant drawings fail

Plan check approves a drawing. Final inspection measures a building. The gap between the two is where accessibility jobs go wrong, and it is almost always the same short list.

The cross slope is the one that costs money. Two percent on a new exterior walk or a landing is a finishing tolerance, not a design question, and a slab poured at three percent is a slab that comes out. Shoot the grades before the pour, not after, and hand the concrete crew the number in writing.

Mounting heights are the second one. Dispensers, switches, controls, card readers and door hardware all live inside the reach range, and they get installed by whoever is holding the screw gun that day. A taped mark at the correct height on every rough opening, set once by a foreman, closes out the whole category.

When the answer to a field condition turns out to be more work than the drawings show, that is a change order, and it is one with a code section behind it, which makes it one of the easier ones to get signed. The way to write it so it gets paid is in getting paid for extras in California, and the rate you carry for this kind of specialized field work belongs in what to charge.

Price it before you sign it

Accessibility on a tenant improvement is not open ended. It is a trigger you can test in one question, a ceiling set at 20 percent of your own adjusted construction cost, a spending order printed in the code, and six field dimensions that decide whether the work passes. All of that is knowable before you put a number on a piece of paper.

The contractors who lose money here are the ones who find out at correction round two and then have the argument with the client about whose scope it was. The contractors who make money here put a path of travel allowance on the bid with the code section next to it, and win the job because the client can finally see the whole cost of the project in one place.

On AEC Stack there is no monthly subscription. The platform fee is 2.5 percent of each invoice processed through the platform, so the job file that holds your CASp report, your priority order and your signed change orders is paid for by the jobs that actually get paid.

Take the tenant improvement sitting on your desk, multiply the adjusted construction cost by 20 percent, and see whether the number scares you or not. Then open a working business file and keep the allowance, the drawings and the corrections in one place, so the conversation at plan check is a scope conversation instead of an argument. If the job is going out this week, the bid ready checklist is the order to work it in.