Every City of Austin approval, on one schedule.
Critical Path ATX tracks zoning, site plans, tap plans, plan review and permits for your projects. Sync your AB+C account in one click, and it shows what is holding each one up, who has the ball, and warns you before anything expires.
- 1Plan review is the critical item: City comments have been out for 9 days, so the next move is yours.
- 2The demolition permit expires in 11 days. Pass an inspection or request an extension now.
- 3The site plan was approved after 98 days, which starts the clock on its 3-year life.
Example project with invented case numbers. Real workspaces read live City of Austin records.
Austin approvals do not fail loudly. They expire quietly.
expired building, trade and driveway permits sat on 68,867 Austin addresses in 2021. They stay with the property and block new permits until someone deals with them.
Source: KXAN investigation, November 2021A single project can carry a zoning case, plat, site plan or exemption, tap plan, plan review and five kinds of permits. Each has its own clock.
"Awaiting Update - Fees Due" and "Inactive Pending Revision" mean something specific. Critical Path ATX translates every one into what it means and what to do next.
Filed with the City since October 2025 by more than 1,000 applicant organizations. Each one moves through its own review cycles and deadlines.
Source: City of Austin Open Data, Plan Review CasesSet it up once. It watches the City every day.
Sync AB+C
Click Sync AB+C while you are signed in to Austin Build + Connect. Every permit, tap plan and case comes in with its reviewers and the City's due dates. No typing, and your password never leaves AB+C.
Pick what to track
Cases are grouped by address into projects, with the open ones already checked. Add anything else by address, case number or a pasted list.
Get told what changed
A morning email when the City posts comments, a status changes, or something is about to expire. Quiet days send nothing.
What you get
One-click AB+C sync
Tap plans, service plans, exemptions and permits come in from your own AB+C account with each reviewer's name, phone number and the City's due date. Click again any time for the latest.
The critical path, drawn
Every record on one date scale with the Austin median, the expiration dates and today. The approval that will clear last is marked as the critical item.
Who has the ball
Each project shows how many items are waiting on you and how many are with the City, so you know where to push.
Reviewer follow-ups
Every approval keeps its case manager and reviewers. One click drafts a specific, polite follow-up from your own email, logs it, and reminds you if no one answers.
Full site plan tracking
Completeness check to release: every review cycle with City days and your days, the update deadline from your comment report, and the fiscal, legal and release steps.
Alerts before deadlines
Permit expirations at 45 and 14 days, plan review and site plan application expirations, completeness deadlines, and reviews running past the City's own targets.
Plain-English status
No more decoding AB+C. Every status comes with what it means and the next step.
Client status pages
Send clients a link that always shows their project's current status. No sign-in, no internal notes, no more "any update?" calls.
Review times, all in one place
What each review should take for site plans, site plan exemptions, tap plans, subdivisions and building plans, with sources, next to live Austin medians and your own track record.
Calendar sync
Every deadline in Google, Apple or Outlook calendar, updated twice a day.
Room for your team
Invite the people you work with. Everyone sees the same projects and gets their own alert emails.
Status history
The City only publishes the current status. Critical Path ATX keeps every change it sees, so you can show exactly when the ball moved.
Built for the people who chase Austin approvals
Dozens of cases, one screen. Branded status pages your clients can check themselves.
Know which project is stuck and which permit is about to lapse before it costs a re-inspection or a new application.
Send clients a clear update in one tap instead of rewriting AB+C statuses by hand.
Check a property for open or expired permits before you buy or start work.
Check any Austin address for expired permits
Free, no account needed. See open, expired and finaled permits and any plan reviews in progress.
Pricing
Every new workspace starts with 14 days of Pro. After that it moves to Free unless you pick a plan. Nothing is deleted, and you can cancel any time.
I built Critical Path ATX after ten years of moving projects through Austin Development Services as a civil engineer. Every week meant refreshing AB+C folder by folder, translating statuses for clients, and keeping a spreadsheet of expiration dates. This does that work the way a scheduler would: it finds the critical item and tells you before the clock runs out.
Landon Odom, P.E., founder
Questions
Where does the data come from?
Two places. Four City of Austin open datasets (issued construction permits, plan review cases, site plan cases and zoning cases), which the City refreshes daily and Critical Path ATX checks twice a day. And your own AB+C account, through the Sync AB+C button, for tap plans, service plans, exemptions and the reviewers on each case. Records can lag Austin Build + Connect, so always confirm a deadline in AB+C before acting on it.
What about site plan exemptions and tap plans?
The City does not publish them as open data, so they come in through Sync AB+C, with their reviewers and the City's due dates. They update each time you click Sync AB+C. You can also add any approval by hand as a milestone.
Do you need my AB+C password?
No, and it never asks. Sync AB+C is a bookmark that runs only when you click it, in your own browser, on AB+C pages you are already signed in to. It reads your permit and case lists and each open case's work flow, then hands them to Critical Path ATX. It changes nothing in AB+C, and your password never leaves AB+C.
Does it send emails to City reviewers for me?
No. It drafts the follow-up and opens it in your own email, so it comes from you. Then it logs the note and reminds you if there is no reply.
Do you file permits or talk to the City for me?
No. Critical Path ATX is a tracking tool. Each record links straight to its page in AB+C.
Who can see my projects?
Only people in your workspace. A client status page is visible only to people you send its link to, and you can turn a link off at any time. Applicant, owner and contractor names and phone numbers in City records are removed before anything is stored or shown. City reviewers' names and work numbers stay, so you can follow up.
Which areas does it cover?
The City of Austin, including its limited-purpose jurisdiction. Surrounding cities and counties are on the roadmap.
What happens when the trial ends?
The workspace moves to the Free plan, which tracks 1 project. Other projects stay saved and become read-only until you upgrade or archive them.
Can my team use it?
Pro includes 2 seats and Expeditor includes 5. Everyone in a workspace sees and edits the same projects and gets their own alert emails.