Designed for professional oversight.
Mason shows you precisely what it sees when it finds a code violation. So you can make the final call.
See Mason work on a real plan — in about the time it takes to grab coffee.
Get a DemoPrefer to try it on one of your own plans first?
Free plan reviewThe full tour — about eight minutes.
A complete walkthrough of Mason AI: uploading a plan set, reviewing the prioritized checklist, opening an embedded code book, accepting an AI-drafted comment, and exporting the finished comment letter.
8–10 MINUTE PRODUCT OVERVIEW VIDEO — TO BE ADDED · poster frame: full product UI with a comment letter half-drafted
Prefer to try it on one of your own plans first?
Free plan reviewMason slots into the workflow you already use.
What that looks like in practice
- Upload the plan set to Mason AI. Open the plan set in Bluebeam (or whatever you use) and do your own quick pass — highlight in blue what needs a closer look, highlight in red what's obviously off. Get oriented to the project before looking at Mason's work.
- Then walk through what Mason caught. Add Mason's comments to your letter with a click where Mason's reasoning makes sense. And where it doesn't, Mason learns from you.
- Reconcile against your own markups. Anything you flagged that Mason didn't? Add it to the letter. This is the step that matters most, and Mason gives you full freedom to revise your comment letter until you've worked through it.
- Write your comments with autocomplete that pulls the right code citation as you type. Export to Word, or, with an enterprise plan, straight into the jurisdiction's preferred format.
PHOTO — split-screen showing reviewer's desktop: Mason on the left, the firm's existing permit system on the right
Want to chat about exporting to your jurisdictions' preferred formats?
Talk to a HumanFeature 01 · Interface
Failed checks first. Everything else, one click away.
- Failed code requirements surface first — the items most likely to end up in your response letter are stacked at the top of the review panel.
- Passed and non-applicable checks are collapsed behind small buttons, one click away when you need to confirm compliance.
- Status is visible at a glance — clear indicators for pass, fail, and N/A across every check.
- Nothing is hidden — every check Mason ran is still accessible, just sorted.
Screenshot: prioritized checklist with failed checks expanded and Passed / N/A buttons shown collapsed.
PRODUCT SNIPPET VIDEO — ~45s: reviewer opens a plan set, the UI auto-prioritizes failed checks, they expand Passed to confirm coverage.
See the prioritized UI on a real plan.
Watch a Product VideoFeature 02 · Comment Letter
Your comment letter, pre-drafted before you open the plans.
- Sixteen drafted comments per letter, on average — covering the full code scope before your reviewer reads line one.
- Pre-populated, not post-processed — comments land in the letter in the format your reviewers already use.
- Significantly less review time — reviewers refine and sign off instead of drafting from a blank page.
- Full human control — accept, edit, reorder, or delete any comment. Mason never sends a letter on its own.
Screenshot: comment letter view with AI-drafted comments already populated and an editable cursor in one of them.
PRODUCT SNIPPET VIDEO — ~60s: plan uploads, draft letter populates, reviewer edits one comment and accepts the rest.
Upload one of your plans. See the draft letter yourself.
Free plan reviewFeature 03 · Code References
Every check linked to the code. No tabs required.
- Clickable code references on every check — one click jumps straight to the cited section.
- Code books embedded in Mason — the code lives inside the application, so reviewers never have to leave to verify a detail.
- Cross-check AI decisions in-line — confirm or overrule Mason against the source of truth, on the same screen.
- A design philosophy, not just a feature — empowering users with easy access to authoritative information is how we earn the right to be in your workflow.
Screenshot: a check expanded to show its clickable citation, with the embedded code book pane open alongside it.
PRODUCT SNIPPET VIDEO — ~45s: reviewer clicks a citation on a failed check, the embedded code book opens to the exact section.
Walk through the code book experience with our team.
Get a DemoFeature 04 · Authoring
Type a few words. Get a fully-cited comment.
- Partial-term lookup — start typing; Mason offers matching code sections and drafts a comment to match.
- Full citation included — the generated comment comes with the code reference already attached.
- No context-switching — the code book is embedded, so reviewers never tab out to confirm a section number.
- Reviewer-first authoring — Mason's comments are fully editable before you add them to the letter.
Screenshot: autocomplete dropdown showing code-section suggestions as the reviewer types a partial term.
PRODUCT SNIPPET VIDEO — ~45s: reviewer types 'egress window,' Mason suggests the section, drafts a cited comment, reviewer tweaks one phrase.
Have questions about how the citation engine works?
Talk to a HumanScope of Mason's Review
What Mason reviews — and what it doesn't.
Transparency is part of how we keep humans in the loop. Below is the complete scope of what Mason checks for Residential projects, and what falls outside the AI's current coverage.
| Code Book | Status |
|---|---|
| California Residential Code (CRC) — Architectural | Full Coverage |
| California Energy Code (CEC) | Full Coverage |
| California Plumbing Code (CPC) | Full Coverage |
| Energy Standards (Title 24) | Full Coverage |
| California Wildland Urban Interface Code (CWUIC) | Full Coverage |
| California Residential Code (CRC) — Structural | Not In Scope |
| California Mechanical Code | Not In Scope |
| California Building Code | Not In Scope |
| CalGreen Building Code | Not In Scope |
| Local Building Code Amendments | Reviewer Verification Required |
| Local Preferences & Practices | Reviewer Judgment Required |
| Solar Permits | Not In Scope |
This is human oversight by design, not by accident.
Want to talk through scope for your specific project types?
Talk to a HumanStart free. Scale as your team grows.
Thirty-day money-back guarantee on paid plans. No contracts. Cancel any time.
- Autocomplete comments
- Up to 4 plans / month
- Embedded code book access
- Email support
- All code checks (CRC, CPC, CEC, CWUIC, Energy)
- Unlimited plans
- Embedded code book access
- Priority support
- Everything in Pro
- Team consistency dashboard
- Bespoke integrations
- 24/7 Slack/Teams support
Not sure which plan is right for your team?
Talk to a Human