CAD designers and drafters produce 2D drawings and 3D models for manufacturers, architects, engineers, contractors, and product inventors. Freelancers and small drafting shops typically bill for part modeling, assembly drawings, permit sets, as-built drawings from field measurements, and revisions after client review.
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Most CAD work is billed hourly, especially open-ended work like revisions, redlines, and ongoing support for an engineering team. Defined jobs such as a single part drawing, a floor plan set, or a 3D model for printing are often quoted as a flat fee per drawing, per sheet, or per part, based on estimated hours plus a buffer. Architectural work is sometimes priced per square foot of the building. Larger projects may be split into milestones such as concept model, detailed drawings, and final release. Many designers include a set number of revision rounds and bill additional rounds hourly. Rush work usually carries a 25 to 50 percent premium, and on-site measuring is billed separately by the hour or visit plus mileage. Software licensing is usually absorbed into the rate, though some designers pass through the cost of specialized plugins or rendering services.
| Service | Priced | Typical range |
|---|---|---|
| General 2D drafting and drawing updates | per hour | $35-75 |
| 3D part and assembly modeling (SolidWorks, Fusion 360, Inventor) | per hour | $50-110 |
| Manufacturing drawings with GD&T | per drawing sheet | $75-250 |
| Architectural floor plan set from field measurements | per sq ft | $0.40-1.50 |
| Permit or construction drawing set (residential) | flat fee | $800-3,500 |
| 3D model for printing or prototyping | per model | $100-600 |
| Photorealistic rendering | per image | $75-400 |
| On-site measuring and field verification | per hour | $50-90 |
Typical US ranges. Rates vary by region, experience, and job size.
| Description | Qty | Rate | Amount |
|---|---|---|---|
| 3D modeling of enclosure assembly (14 parts) in SolidWorks | 16 hours | $75.00 | $1,200.00 |
| Manufacturing drawings with tolerances and BOM | 8 sheets | $125.00 | $1,000.00 |
| Revision round 3 per client markup dated 5/14 (beyond 2 included rounds) | 3 hours | $75.00 | $225.00 |
| STEP and PDF file export and delivery package | 1 flat fee | $50.00 | $50.00 |
| Photorealistic rendering for sales sheet | 2 images | $150.00 | $300.00 |
| Total | $2,775.00 | ||
Notes: Project: Enclosure Rev B, PO 48213. Net 15. Final native files released on payment in full. Revisions beyond the agreed scope are billed at $75 per hour. A 1.5 percent monthly late fee applies after 30 days.
Clients often track many parts and revisions. Listing which drawings and revisions you billed for prevents confusion about what was delivered.
Engineering and manufacturing clients usually cannot pay without a PO reference, and accounts payable will reject invoices that lack one.
Separating modeling, drafting, and revisions shows where time went and supports hourly charges if questioned.
Shows why extra revision time is billed and ties the charge back to the scope you agreed on.
Listing DWG, STEP, PDF, or STL files confirms what was handed over and avoids disputes over missing formats.
On-site measuring is a separate cost from drafting time and should be itemized with the date and distance.
Stating that native files transfer on full payment protects you if the client is late and clarifies who owns the design.
Many CAD designers take a deposit of 25 to 50 percent on small jobs and bill larger projects at milestones, such as model approval and final drawing release. Hourly work is commonly invoiced every two weeks or monthly. Net 15 or Net 30 is typical, and corporate clients may insist on Net 45 or Net 60, so confirm this before starting. Late fees of 1 to 1.5 percent per month are common if stated in your agreement in advance. Payment is usually by ACH, check, or card. Withholding native editable files until final payment is a common and reasonable way to protect yourself, while delivering PDFs for review.
Put a number on included revisions, such as two rounds, and bill further changes hourly. Clients often treat design changes as endless unless the limit is written down.
If the client changes dimensions or requirements after approval, bill it as a change order. Fixing your own mistake is not billable, but a new design direction is.
Logging hours shows you whether your per-sheet or per-model price is working and gives you evidence if a client disputes a change-order charge.
Send watermarked PDFs or view-only files for review and release editable files such as SLDPRT, DWG, or STEP after payment clears.
Redrawing from hand sketches, scanned prints, or poor photos takes more time than working from clean data. Add a line for interpretation and cleanup, or quote a higher rate.
Use hourly for open-ended work, revisions, and ongoing support. Use a per-drawing or flat fee when the scope is clear, such as a fixed set of part drawings. Many designers use a flat fee for the first deliverable and hourly for changes.
Yes. Include a set number of revision rounds in your quote and bill additional changes at your hourly rate. State this in writing before you start so it does not come as a surprise on the invoice.
It depends on your agreement. Many freelancers transfer ownership of the final deliverables on full payment while keeping rights to reusable templates and standard components. Put this in your contract, and check with a lawyer for anything involving patents or complex IP.
It varies by state. Some states tax digital products or certain design services, while others do not tax services at all. Check your state's rules or ask an accountant, and show any tax as a separate line on the invoice.
Most designers fold software licenses into their hourly rate. If a project requires a specialized add-on, simulation module, or rendering service, you can pass the cost through as a line item if you agreed to this beforehand.
Send a CAD Designer estimate for approval, then turn it into an invoice when the work is done.
CAD Designer estimate template