PDF or CAD? Here's How to Choose.
Both formats give you a complete plan set. The difference is what you can do with the files afterward — and for most builds, PDF is all you need. Here's how to know which is right for you.
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For most residential builds — especially if you're building largely as designed, or making only minor changes — PDF is all you need. It's a complete, professional, print-ready plan set that your entire build team can work from. If you're not sure whether you need CAD, you probably don't. And if it turns out you do need it later, you can always add it.
What Each Format Includes
All Rocky Mountain Plan Company plans are delivered digitally – no shipping wait, no rolled tubes in the mail. You'll choose your format before checkout.
PDF Plan Set
A PDF plan set is a high-resolution, non-editable digital file — the same complete set of construction documents, delivered ready to print and use. Print as many copies as you need for your builder, engineer, subs, lender, and building department. No special software required to open or print.
What you can do with PDF:
- Print unlimited copies for your build team
- Share electronically with your builder, engineer, and building department
- Mark up digitally or by hand (redline changes) for minor field adjustments
- Use for permit applications exactly as delivered
What PDF doesn't do:
- Open in drafting software for direct editing
- Allow your designer or engineer to make changes to the drawing geometry itself
Cost: Included in every plan purchase.
PDF + CAD File
When you add the CAD file to your order, you receive everything in the PDF plan set — plus the editable source file in .dwg format for every plan sheet. Your designer, drafter, or structural engineer can open this in AutoCAD or compatible software and make changes directly to the drawing.
What you can do with CAD:
- Make significant layout modifications directly in the source files
- Allow your structural engineer to work natively in the drawings
- Adapt the plans efficiently for complex site conditions
- Make precise changes without starting from scratch
What CAD doesn't change:
- Your license terms — the same single-structure rules apply regardless of file format
- What's included in the plan set — it's the same sheets, in editable form
Cost: +$500 at checkout, or added any time after purchase.
Which Is Right for You?
Work through these questions — most buyers land on an answer quickly.
Are you planning significant modifications to the layout?
Moving walls, reconfiguring rooms, changing the structural layout, adding or removing square footage?
YES
✔ CAD is worth the add-on. Your drafter or designer can make changes directly in the source files, which is faster and more accurate than working from a PDF.
NO, or only minor changes
✔ PDF is fine. Minor adjustments (outlet placement, finish selections, small interior tweaks) are handled on-site by your builder or via redline on the PDF.
Does your structural engineer or designer prefer to work in native CAD files?
Some engineers and designers request .dwg files as a matter of practice — especially for complex plans or hillside/walkout builds.
YES, or you're not sure
✔ Ask your engineer or designer before you finalize your order. If they want a .dwg file, add CAD. If they're comfortable working from PDF, save the $500.
NO
✔ PDF is fine.
Is your plan particularly complex?
Multi-level home, walkout lower level, varied roof pitches, hillside foundation?
YES
✔ CAD is worth considering. Complex plans have more moving parts, and having an editable source file gives your local team more flexibility to adapt for your site without starting from scratch.
NO
✔ PDF handles straightforward builds cleanly.
Are you building largely as designed?
Minor finish changes, maybe a small interior tweak — but the floor plan and layout are essentially what you want?
YES
✔ PDF is everything you need. Most builds fall into this category.
NO
✔ CAD is worth the add-on. Your drafter or designer can make changes directly in the source files, which is faster and more accurate than working from a PDF.
Still not sure? →
Start with PDF. CAD can be added to your order any time after purchase for $500 — just contact us and we'll get it set up.
There's no penalty for waiting until you know whether you need it.
CAD Files and Modifications
If you're planning to work with a drafter or designer on modifications, it's worth asking them before you order whether they prefer CAD or PDF to work from. Local drafters who know your area's codes often have a format preference, and giving them the file type they're most comfortable with saves everyone time. See how modifications work →
A Few More Questions and Answers
What software do I need to open CAD files?
CAD files are delivered in .dwg format — the industry standard used by AutoCAD and compatible with most professional drafting software. You don't need to open them yourself; they're for your engineer, designer, or drafter to work from. If you want to view them without a full CAD license, free viewers like Autodesk DWG TrueView or similar tools work well.
Can I add CAD files after I've already placed my order?
Yes — CAD files can be added at any time after your original purchase for $500. Just reach out to us with your order details and we'll get them added.
Does adding CAD files change my license?
No. The same Single-Structure License terms apply regardless of which format you choose. CAD files give you more flexibility in the files themselves — not expanded usage rights. More on your license →
Ready to Choose Your Plan?
Still have questions about which format is right for your build? We're happy to help you think it through before you order.