Structural drawings
Framing plans, foundation plans and shear-wall schedules keyed to your architectural set — sheet-numbered and plan-check ready.
Plan-check corrections · California
Plan Check Flagged Your Permit? Get the Engineering Response — Fast.
Upload the correction letter. We break it into items, produce the engineering the city asked for, and return engineer-reviewed responses through one trackable project.
What did the city ask for?
60 seconds · Free · No obligation
Step 1 of 4
What did the city ask for?
60 seconds · Free · No obligation
Step 1 of 4
Licensed PE engineers · CA & NV
Every project is reviewed and approved by a licensed engineer — never automated.
Signed & sealed
Stamped drawings and calculations where your jurisdiction requires them.
Serving California
Statewide, CA and NV
No commitment until you accept
Free scope review, one fixed price in writing, corrections included per proposal.
Most correction letters carry a response deadline. Upload yours today — scope review starts within one business day, and cases are prioritized against agency due dates.
Get My Free Quote →Bring us the letter if it says anything like…
- "Provide calculations by a licensed engineer"
- "Provide beam/header sizing and connection details"
- "Provide lateral analysis / shear wall schedule"
- "Structural sheets must be signed and sealed"
- "Engineer of record to respond to items 4, 7, 12…"
Sound familiar? Get My Free Quote →
How it works
From this page to permit-ready plans.
- 1
Today — about a minute
Answer a few questions & tell us where to send the quote
Plans, photos, sketches or a permit letter. Don't have everything? Send what you've got.
- 2
Within 1 business day
Free scope review → fixed-price proposal
A defined scope, one price and a stated turnaround. Your quote stays valid for 30 days.
- 3
After you accept online
Engineering starts — track it live
E-sign, pay the deposit by card or ACH, and watch status through delivery on your dashboard.
Your quote
One fixed price. In writing. Before you commit.
- Free scope review — you pay nothing to find out what your project needs
- A fixed price for a defined scope; additional work is only ever quoted, never surprise-billed
- Your quote stays valid for 30 days while you line up your contractor
- Plan-check correction rounds included per the proposal
Pricing, honestly
What actually drives the price
No two projects price the same — these are the factors our engineers scope. You get one fixed number after a free review, not an hourly meter.
Number of structural items
Three comments and thirty are different responses — we price the actual list, item by item.
Whether existing engineering exists
Responding within someone else's design is sometimes possible; sometimes a section must be re-engineered.
Documentation available
The original submitted set plus the letter usually gets us there; missing drawings add work.
Your deadline
Tell us the response date on the letter — corrections are prioritized against agency deadlines.
The risk is on us: free scope review, fixed price, and no commitment until you accept.
Get My Free QuoteDeliverables
What you receive
A complete, engineer-reviewed structural package — the same documents a full-service firm produces, delivered through your project dashboard.
What you receive
Structural calculations
Gravity and lateral calculations that match the drawings, member by member, so plan checkers can follow the load path.
Details & connections
Beam-to-post, holdown, footing and connection details your framer can build from — no guesswork on site.
Plus permit-correction responses and revisions through the same project. Get My Free Quote →
Who reviews your engineering
A licensed structural engineer signs off on every set.
Commercial, data center and residential structures across California and Nevada. Produces and reviews code-compliant structural drawings and calculations, coordinating with architects, contractors and plan checkers.
- CBC
- IBC
- ASCE 7
- ASCE 41
- AISC
- ACI 318
- NDS
- TMS
Why JAT
Built like software, reviewed like a firm.
The engineering is the same discipline you'd expect from any licensed structural firm. The way you order it, track it and receive it is not.
Comparison with a traditional engineering engagement
| The usual way | With JAT Engineering | |
|---|---|---|
| Getting a quote | Phone tag, site visit scheduling, waiting weeks for a proposal | Upload plans or photos online; defined scope and fixed price after review |
| Knowing where things stand | Emails and voicemails | One status per project, visible in your dashboard 24/7 |
| Documents & revisions | PDF attachments scattered across inboxes | Versioned drawings, calcs and permit comments that stay with the project |
| Plan-check corrections | A new conversation and often a new invoice | Submitted back through the same project — rounds included per proposal |
| Repeat projects | Start from scratch every time | Duplicate a past project or use a template — under two minutes |
| Paying | Paper invoices and checks | Card or ACH online; deposit to start, balance before final release |
Before you ask
The letter gives me 30 days. Can you make it?+
Tell us the deadline in the intake — correction cases are scheduled against agency due dates and your dashboard shows the target. If a deadline isn't workable, we'll say so at the scope review, before you've committed anything.
Can you respond to comments on another engineer's design?+
Often, yes. Upload the correction letter and the existing structural set; we'll tell you whether we can respond within that design or whether part of it needs re-engineering — and quote it either way.
What does a correction response cost?+
It depends entirely on the list, so we quote after reviewing your letter — free, within one business day. You get one fixed price for the defined items.
What do you deliver back?+
Revised engineer-reviewed sheets and calculations plus an item-by-item response the plan checker can follow, signed and sealed where required. If the city replies with more comments, they run through the same project.
Plan Check Flagged Your Permit? Get the Engineering Response — Fast.
A few quick questions, a free scope review, and a fixed-price quote — usually within one business day.
No commitment required to submit a project for review.