AI analyzes your construction plans, flags issues by severity, generates RFIs, and verifies fixes in the field — keeping architects, CMs, and owners on the same page.
No credit card required. Free tier includes 3 analyses/month.
OnSpec Score
87
Del Valle Public Library
Recent Findings
Team
Open RFIs
3Field Verifications
12Trusted by architects, GCs, and owners on projects from $5M to $500M+
$100K
RFI cost per $5M project
25% never get a reply
4-12%
of project cost lost to rework
Preventable with early detection
16-18%
rework reduction with AI QC
Across plan review + field
10x
cheaper than Procore
Pro plan: $149/mo vs $15K+/yr
The Closed Loop
The only platform that closes the loop between what was designed, what was flagged, and what was actually built.
Drop PDFs — blueprints, specs, geotech reports. Any stage: SD, DD, CD, IFC.
Engine reads every sheet, cross-references documents, flags issues by severity.
Findings assigned to architect, CM, or engineer. Discussion threads on each issue.
AI drafts RFIs with sheet refs, spec citations. Routes to the right person with deadlines.
CM uploads site photo. AI confirms if the finding was addressed. Loop closed.
Collaboration
Every role has a seat at the table. Findings are assigned, discussed, and resolved by the people who know the work — not lost in email chains.
Every finding flows through a closed loop — no more RFI black holes.
Detection Engine
From plan errors to build deviations — issues are flagged whether you're reviewing drawings or monitoring construction.
Measurements that don't add up between sheets, rooms that won't fit, clearance violations.
ADA compliance issues, egress width problems, fire separation concerns, structural clearances.
Materials specified on one sheet but different on another, conflicting finish schedules.
Incomplete callouts, missing section references, undefined materials or methods.
Architectural vs structural vs MEP conflicts — duct routes through beams, plumbing through shear walls.
Specs say one thing, drawings say another, geotech report conflicts with structural.
Mislabeled rooms, wrong sheet references, broken detail callouts that waste RFI cycles.
What's being built doesn't match what was designed — wrong materials, shifted walls, missed details.
Re-upload revised plans and instantly see what changed — new issues introduced, old issues resolved.
Platform
Plan quality, team collaboration, and build compliance — from pre-construction through closeout.
Click any finding to generate a professional RFI. AI drafts the question with sheet references, spec citations, and severity context. Routes to the right person with deadlines and auto-escalation. No more RFI black holes — 25% of RFIs never get a reply. OnSpec tracks every one.
CM uploads a site photo against any finding. AI vision confirms if the issue was addressed. Auto-resolves findings. Complete audit trail from plan → finding → fix.
Invite architects, engineers, CMs, subs, and owners. Each person sees what's assigned to them.
Comment on any finding. Tag team members. Keep the conversation tied to the issue, not lost in email.
Re-upload revised plans and see what changed — new findings, resolved issues, persistent problems.
Professional PDF reports for stakeholder reviews. CSV exports for your own systems.
Open → In Progress → Resolved → Won't Fix. Full status workflow with notes and audit trail.
Upload specs, drawings, geotech — AI automatically detects contradictions between documents.
A plan error caught in review costs $50K to fix. That same error found during framing costs $500K. An unanswered RFI costs $100K per $5M project. OnSpec catches them all.
$600K+
$50M project
16-18% rework reduction
$100K
RFI friction eliminated
25% of RFIs never get replies
$180K/yr
3 RFI cycles/mo avoided
Issues caught in real-time
$450K
1 deviation caught early
$50K fix vs $500K at closeout
Free forever tier. Pro starts at $149/mo — 10x cheaper than Procore.
Walk the site with your punch list. Snap a photo — AI verifies if the issue is fixed. Respond to RFIs, update finding statuses, and see who's blocking progress — all from your phone.
Coming soon. Join the waitlist to get early access.