STN Engineering

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Los Angeles, CA & Online

About

Need permit-ready plans fast? STN Engineering LLC delivers high-quality architectural and structural documents with quick turnaround and outstanding communication. We specialize in helping homeowners, contractors, and property investors get their projects approved quickly and stress-free.

From simple remodels to full structural engineering packages—we provide everything you need to submit confidently to your local building department.

⭐ Why Clients Choose Us

✔ Fast Turnaround

Most projects completed in 2–5 business days.

✔ Clear, Accurate Plans

Detailed drawings that pass permitting the first time.

✔ Licensed Structural Engineers

Engineering letters, beam sizing, load calcs, structural analysis—professionally stamped when needed.

✔ Great Communication

We keep you updated from start to finish.

✔ Fair & Transparent Pricing

No surprises, no hidden fees—easy, predictable quotes.

⭐ Our Services

✔ Residential Design & Engineering

- Home additions & remodels

- Garage, carport, pergola & deck plans

- ADUs & basement layouts

- Structural inspections & engineering letters

- Plan corrections for permit reviewer comments

✔ Commercial & Industrial Plans

- Tenant improvement packages

- Drive-thru design & SLUP support

- Warehouse conversions

- Industrial bathrooms, kitchens, and utility spaces

- Site plans & code-compliance updates

⭐ Popular Projects

- Structural beam sizing for inspectors

- Stamped engineering letters

- Edit/markups on existing PDFs

- Permit-ready drawings for remodels

- Code compliance corrections after rejection

- Foundation, framing & roof plan updates

⭐ Service Areas

We work nationwide and have experience with permitting in multiple states including CA, TX, GA, NC, NJ, UT, MO, FL, and more.

⭐ Our Promise

When you hire STN Engineering LLC, you get reliable, responsive, and professional service—every single time.

We’re here to make your permit submittal smooth, easy, and stress-free.

Chad Spink, PM of STN ENGINEERING LLC

Email: [email protected]

Phone: (442) 567-1982

Website: stnengineering.com

Highlights

20 employees

Serves Los Angeles, CA

Offers online services

Payment methods

Credit Card, Venmo, Paypal, Stripe, Zelle, Bitcoin

Specialties

Project type description

New construction, Addition to existing structure, Remodel of a few rooms, Complete remodel

Square footage of project

Less than 500 sq ft, 500 – 1,000 sq ft, 1,000 – 1,500 sq ft, 1,500 – 2,000 sq ft, 2,000 – 2,500 sq ft, 2,500 – 3,000 sq ft, More than 3,000 sq ft

Property type

Residential, Commercial

Services needed

Project consultation, Design drawings, Construction documents (blueprints), Construction administration, Contractor selection assistance, I will make professional recommendations

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Services offered

Architectural Services

3d Design & Modeling

Structural Engineering