Blueprint Markup and CAD Viewer
Open PDF plans, DXF drawings, and IFC building models in the browser — mark them up, slice through them, and share them with subs without anyone installing software.
Plans get emailed, printed, marked in pen, photographed, and emailed again. Somewhere in that loop the current revision stops being obvious, and someone builds from a superseded sheet.
SiteAnchor keeps plans on the job and viewable in a browser. Nobody needs a CAD license to look at a drawing, and the marked-up version lives with the project instead of in someone's phone gallery.
What it does
PDF plan markup
- Pin, arrow, and sketch directly on plan sheets in the browser. Markups save against the document so the next person opens the annotated version.
DXF drawings without CAD
- Open DXF files in the browser. No AutoCAD seat, no conversion step, no waiting for the one person who has the software.
IFC building models
- Open IFC models, browse by storey and category, and cut clipping sections through the model to see what's behind a wall.
Clash detection
- Cross-discipline clash rules run against the model at mesh level, and clicking a clash flies the camera to it.
Shared with subs, no login
- Subcontractors and architects can be given plan access through a portal rather than an email chain of attachments.
Signed, time-limited file access
- Plans are served through signed URLs that expire, rather than public links that keep working after you'd rather they didn't.
How it works
- 01
Upload the set
Drop PDF plans, DXF drawings, or IFC models onto the project.
- 02
Mark it up in the browser
Pin, arrow, and sketch on the sheet; slice through the 3D model.
- 03
Share the current version
Give subs and architects portal access to the live document.
- 04
It stays with the job
Markups and revisions live on the project record, not in an inbox.
Works with the rest of the platform
Plans & Markup isn't a standalone module — it shares the same job record as everything else in SiteAnchor.
Subcontractors
Bid work out to subs, track their insurance and rates, and run RFIs, submittals, and change orders through one hub — with no login required on their end.
Client Portal
Give homeowners and property owners their own login for photos, schedule, invoices, change orders, and messages — branded to your company.
Scheduling
Plan phases on a Gantt with real dependencies, see the critical path, and get told when you've booked the same crew in two places.
Estimating
Build a priced estimate from your own material catalog, reuse the assemblies you quote most, and send it out for a signature without leaving the job.
For General Contractors
Coordinate subs, schedules, budgets, and clients across every job you have running — without a different app for each one.
For Home Builders
Run long build cycles with draw schedules, selections, and a client portal that keeps buyers informed without keeping you on the phone.
For Electrical Contractors
Run project work and service calls out of one system, with parts, hours, and permits tracked against the job that consumed them.
Frequently asked questions
Do I need AutoCAD to open drawings?
- No. DXF drawings and IFC models both open in the browser with no CAD software installed.
Can subcontractors see the plans?
- Yes, through a collaborator portal, so you're sharing a current document rather than emailing a file that immediately goes stale.
Can I check a model for clashes?
- Yes. Cross-discipline clash rules run at mesh level against IFC models, and selecting a result moves the camera to it.
What file types can I open?
- PDF plan sets with markup, DXF drawings, and IFC building models — all in the browser, with no CAD software installed on anyone's machine.
Can I mark up plans from the field?
- Yes. Plan markup runs in a mobile browser, so a pin or an arrow can be added on site and the next person opens the annotated sheet rather than an email attachment.
Do markups stay with the job?
- Yes. Markups save against the document on the project record, so the current version is wherever the job is rather than in whoever's inbox last touched it.
Is plan sharing secure?
- Plans are served through signed URLs that expire rather than permanent public links, and portal access is granted per collaborator, so a link forwarded on doesn't keep working indefinitely.