HZS logoHZSEngineering & Construction
Menu
Orange County   /   Los Angeles

Engineering,
Permitting &
Construction.
Under One Roof.

From ADUs and seismic retrofits to balcony repairs and public works, HZS brings your project from initial plans through construction.

Request a Project Review View Our Projects
Have a project in mind? (949) 415-9556
Timber framing during HZS's two-story addition project in AnaheimTwo-Story AdditionFraming in progress · Anaheim, California
Engineering & construction together
Based in Orange, California
CSLB license #1039476 ↗
Selected work

See Our Work In The Field.

A closer look at HZS projects across Southern California.
View all projects ↗

Lodge entrance with a curved concrete walkway and stone-bordered planting bedPublic Works · Lodge Improvements

LAUSD Canyon Lake Project

Structural work, walkways and landscape improvements.

View project photos Installed LAUSD obstacle course with climbing features, stepping platforms and green surfacingPublic Works · Outdoor Recreation

LAUSD – Obstacle Course

Installed course features and construction progress.

View project photos Completed LAUSD schoolyard gathering area with log seating and landscaped pathsPublic Works · Schoolyard Improvements

LAUSD – Greening Project

Finished schoolyard spaces and construction progress.

View project photos Roof framing for a two-story addition in AnaheimAnaheim, California

Two-Story Addition

Residential addition shown during framing.

View project photos Multifamily building exterior with plywood sheathing, installed windows and gabled roofsBaldwin Park, California

Multifamily Ground Up

Ground-up construction · Progress photos

View project photos Exterior of a Glendale garage conversion ADU projectGlendale, California

Garage Conversion ADU

Accessory dwelling unit · Garage conversion

View project photos
What we do

Expertise For Your
Next Project.

Engineering, permitting and construction services for your next project.

01 / ENGINEERING

Engineering & Design

Site plans, floor plans and engineering drawings for a clear path forward.

Explore engineering
02 / INSPECTIONS & REPAIRS

Balcony Inspections & Repairs

Understand balcony conditions with inspection, reporting and repair services.

Explore balcony services
03 / ADUs

Accessory Dwelling Units

Design, permitting and construction for ADUs, including garage conversions.

Explore ADUs
04 / RETROFITTING

Seismic Retrofitting

Engineering design, permitting and construction to strengthen existing buildings.

Explore seismic retrofits
05 / INFRASTRUCTURE

Public Works

Engineering services for roads, bridges, water systems and public facilities.

Explore public works
LET’S START HERE

What Are You Planning?

Tell us what you have in mind. We’ll discuss the next steps for your property.

Discuss your project
A connected approach

From Initial Plans To Construction.

01 / PLAN

Start With A Clear Scope.

Define the scope and develop the engineering and design.

02 / PERMIT

Move The Plans Forward.

Coordinate permitting and prepare for construction.

03 / BUILD

Bring The Design To Life.

Carry the approved plans through construction with HZS.

The HZS Engineering and Construction team at a project site
About HZS

One Team.
A Connected Approach.

HZS brings engineering, permitting and construction together for property owners across Los Angeles, Orange County and surrounding communities.

Tell us about your project
Client Feedback

Testimonials

Read More On Yelp
“They delivered the plans earlier than promised, with no headache.”
Jonathan E. · Los Angeles · Soft-story retrofit
“Their turnaround timeframe on calculations is fast and accurate.”
Shokoufeh N. · Marina del Rey · Engineering services
“They delivered the project earlier than expected and did a phenomenal job.”
H M. · Yelp · March 12, 2024
Read H M.’s Review On Yelp
“Very happy with service and price. Geraldo was very clean and courteous.”
James M. · Yelp · January 21, 2024
Read James M.’s Review On Yelp

Let’s Talk About Your Project.

Share your property location, the work you have in mind, and where you are in the process.

Call (949) 415-9556

2025 Wildfire Response

Read Here

CSLB Lic #: 1039476

Our Services

  • Engineering & Design

    Got a project in mind? We offer comprehensive drawing services, including site plans, floor plans, and more, to bring your vision to life.

    Learn More

  • Balcony Inspections & Repairs

    Ensure SB-326 and 721 compliance. From inspections and reports to repairs and construction, we make sure your balconies meet all state regulations.

    LEARN MORE

  • ADUs

    Maximize your property with a custom ADU, a valuable way to increase your value. We handle everything from start to finish to meet all state regulations.

    LEARN MORE

  • Seismic Retrofitting

    Secure your property with our seismic retrofitting services. From design and permitting to construction, we ensure it's earthquake-resistant and safe.

    LEARN MORE

  • Public Works

    Transform communities with our public works engineering. We specialize in comprehensive solutions for California's roads, bridges, water systems, and public facilities.

    LEARN MORE

About Us

HZS Engineering & Construction Inc:

Fully licensed in engineering and construction, HZS has proudly served Los Angeles, Orange County, and surrounding areas for over 8 years.

We offer end-to-end services, including engineering design, permitting, and construction for seismic retrofitting, ADUs, and balcony inspections and repairs.

Our team is dedicated to ensuring the safety and well-being of your property, tenants, and residents.

Our
Projects

What Our Clients Say

  • "HZS Engineering and Construction was the go-to Engineering company for my Soft story retrofit. They delivered the plans earlier than promised, with no headache. I would recommend working with this company if you're looking for efficient, easy, and reliable service. They also do construction and were very competitive with other contractor bids. I ended up working with HZS for the construction process as well."

    Jonathan E. - Los Angeles, CA

  • "I have been using HZS engineering firm for several years and highly recommend them. Their turnaround timeframe on calculations is fast and accurate. They truly know what they are doing and offer great customer service to their clients."

    Shokoufeh N.​ - Marina del Rey, CA

  • "I just finished the design stage of my apartment building soft-story retrofit. The job consisted of planning/design on a two car carport area located in the City of LA. Hamid has been very easy to work with and communicated well with me. I even had them bid the construction phase and due to their price and service, I went with them. Please do yourself a favor and get a quote. For the planning, they were market rate and for the construction were well under other contractors."

    E Ric K L. - Gardena, CA

  • "HZS did our bathroom remodel and recessed lighting. They delivered the project earlier than expected and did a phenomenal job. We have received many compliments from family and friends. Exceptional value for the quality of work."

    H M. - Irvine, CA