Home Builder in La Mirada, CA
Our job is to take your plans and turn them into a home that feels right, every day.

At Cornejos Builders, we’ve been helping families like yours turn ideas into reality. Empty lots become dream homes. Cramped spaces open up and breathe again. That kitchen you’ve been sketching on napkins? We make it real.
We move fast when you need us to, but never cut corners. And here’s the thing, we actually pick up the phone. You’ll always know what’s happening because surprises are only fun at birthday parties.
We handle everything: home builder, foundations, plumbing, electrical, framing, gorgeous kitchens, spa-like bathrooms, and even crawl spaces. No juggling different contractors or playing telephone tag between trades.
This is our neighborhood too. We shop at the same stores, our kids might go to the same schools. When we build your home, we’re building something we’ll drive by for years to come. That matters to us.


Alexsander Cornejo – Owner of Cornejo Builders
Hi, I’m Alexsander Cornejo, the owner and founder of Cornejo’s Builders. I started working in the remodeling and construction industry right out of high school, in 2009.
With Cornejo’s Builders, the goal is to give back to the city I grew up in. I want to send a message of hope and inspiration: any dream can be achieved, no matter where you come from, if you put in enough work and dedication.
Why Homeowners in La Mirada Trust Cornejos Builders to Bring Their Vision to Life
- 1-Year Workmanship Warranty
- Materials Warranties 2–50+ Years
- 24 ADUs Completed
- Fast Completion Timelines
- Constant Project Updates
- Premium, High-End Finishes
See Our Work in La Mirada, CA
Check out what we’ve been building around town. ADUs that give families extra space, custom homes that fit perfectly on their lots, and kitchen makeovers that actually work for how people live. These are all local projects maybe you’ll recognize a street or two.
60+ projects done
100+ of families helped
1:1 approach to your project







What People in La Mirada, CA Say About Us
Want to know what your neighbors think? Check out our reviews they’ll tell you way better than we can. We’re proud of the reputation we’ve earned, and we’re even prouder of the families we’ve helped along the way.
L
Yahritza Orellana
Had a truly great experience with Alex. Cornejos builders just completed converting my crawlspace/basement into an ADU (studio with new bathroom and kitchen).
What made the experience even more valuable was that the owner himself (Alex) came over for a consultation. Other companies just send their sales reps and most of the time they don’t even know anything.
Feeling important is always a positive I can’t wait to work with them again. I highly recommend them. You can tell Alex is passionate about what he does, his clients, and his company.

Jenna Laricchia
Cornejos Builders Inc did excellent work for my kitchen remodel project.
I really appreciate Alex efforts in fulfilling my goals, not to mention I had fun working with the team who gave me excellent quality service and ideas for my project. I am extremely satisfied; not to mention the reasonable timeline to finish the job with no hassles.
I wish Cornejos Builders Inc great success! I highly recommend Cornejos Builders Inc to anyone who is looking to get construction work done.
How Much Does a Home Builder Cost in La Mirada, CA?
Let’s talk real numbers. A custom home building in La Mirada typically runs $155,000 to $450,000+, depending on what you’re building. If utilities are already connected and you have clear plans, you’ll land closer to the lower end. Planning a smart home with high-end finishes? Expect to pay more. Either way, you’ll get a detailed breakdown upfront, no mystery math or surprise bills later.
| Project | Features Included | Total Cost |
|---|---|---|
| 800 sq. ft. New Home in Montebello | Level 5 drywall finish, curbless walk-in shower, new kitchen cabinets and countertops, new 2-ton mini split system, new vinyl flooring | $155,000 |
| 750 sq. ft. New Construction Unit in Los Angeles, C | New foundation, new windows, new drywall, new balcony, new sand finish stucco, new electrical and plumbing installation | $175,000 |
| 682 sq. ft. Master Suite Addition in Long Beach, CA | Heated flooring, level 5 smooth finish walls, Bose sound system throughout the suite, master bathroom, smooth stucco finish, new foundation | $205,000 |
Five Key Price Factors:
- Size & Layout: Larger homes require more materials, labor, and time. A compact 1,200 sq ft build costs significantly less than a 3,000 sq ft two-story.
- Design Complexity: Simple shapes and layouts (like a clean galley layout) cost less than custom multi-level homes with unique rooflines or structural reinforcements.
- Material Choice: Want quartz countertops, marble backsplash, or imported tile? Gorgeous, yes but they impact your bottom line. We'll guide you to smart choices that balance budget and beauty.
- Finishes & Fixtures: Quartz countertops or granite, luxury flooring, custom cabinetry, and durable fixtures add value and cost.
- Permits & Timeline: Local approvals, inspections, and expedited scheduling influence fees and duration.
Budget-Friendly & On-Time Completion
We know your two biggest questions: Can I afford this? And will it ever be done on time? Short answer yes and yes. We plan carefully, communicate clearly, and stick to our word.
Budget
Think about it this way if your new home costs $350k and you live in it for 20 years, that’s under $50 a day. That’s what many families spend on dinner delivery twice a week except this investment builds equity while giving you exactly the space you need.
Timeline
We treat your time and space with respect. Our schedules are realistic, and we don’t bounce between projects. When we start your build, we stay focused. And when we finish? We clean up, haul out, and leave you with nothing but that “wow, this is mine” feeling.
Our Home Builder Process
We’ve made home building in La Mirada, CA, as smooth as possible. From permits to the last doorknob, we handle it all, so you can focus on the fun part.
FAQs About Home Builders in La Mirada, CA
How long does it take to build a new home?
Most custom homes in La Mirada take about 6–10 months, depending on size, weather, and design complexity. ADUs or smaller builds may wrap up in 3–5 months. We build efficiently without cutting corners and we give you consistent updates so you’re never left guessing.
Do I need to hire an architect first?
Nope! You can come to us first. We work with designers and draftspeople on a regular basis, so if you don’t already have blueprints, we’ll help you create them. If you do have plans already, even better we’ll jump right in. Either way, we’ve got you covered.
What kind of finishes and materials can I choose from?
Everything from durable quartz countertops and tile backsplashes to custom cabinetry and luxury flooring. We’ll walk you through options that fit your budget, lifestyle, and taste. Whether you’re into open floor plans or want a classic kitchen island with a casual dining nook, we’ll help you find what fits.
Is it possible to stay within budget without sacrificing quality?
Absolutely. It’s about smart design choices. For example, subway tile backsplashes add interest without breaking the bank. We use high-quality materials and offer alternatives that make sense. And we’re honest with you if something’s not worth the upgrade, we’ll tell you.
Start the Conversation with Cornejos Builders!

Alexsander Cornejos
Your home should reflect the way you live your style, your values, your everyday needs. At Cornejos Builders, we take that seriously.
Every decision, detail, and material we work with is handled by a team that cares about doing things the right way.
Call us today at (562) 319-3178 or send us a message here – we’ll respond promptly and talk through what you’re looking for. Find out what working with a local home builder should feel like.
La Mirada, California, is a city built on a mix of suburban calm and unexpected character. It’s home to Biola University’s picturesque campus and a vibrant arts scene centered around the La Mirada Theatre for the Performing Arts. You’ll also find the Splash! La Mirada Regional Aquatics Center which becomes a hub for families and visitors in the summertime. With those spots and a garden‐like neighborhood feel, La Mirada offers both small‑town comfort and little cultural touches worth exploring.