Home Improvements in Downey, CA
A home that feels right changes everything. With thoughtful home improvements in Downey, CA, you can create spaces that fit your life, reflect your taste, and make each day a little easier.

Why Homeowners in Downey Choose Cornejos Builders
Every home in Downey tells a story. Some need a new chapter, and that’s where we come in. At Cornejos Builders, we bring care, skill, and clear communication to every project. Our clients trust us because we show up, we explain what’s happening, and we keep our word.
Sometimes a home just needs attention. A bit of care in the right places can turn an ordinary house into one that feels comfortable again. Maybe the paint’s fading, or the kitchen hasn’t fit your family in years. We bring those spaces back to life with craftsmanship you can see and a process that keeps you informed from start to finish.
Every project gets daily progress updates, clear pricing, and the same five-year workmanship warranty we give our own families. Our crews show up, work steadily, and leave your space cleaner than they found it.


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.
- 5-year workmanship warranty
- Daily project progress logs
- No hidden fees or surprises
- Seasoned, friendly pros
- Interior & exterior remodeling
- New windows, decks, and roofing
See Our Work in Downey, CA
60+ projects done
100+ of families helped
1:1 approach to your project







What People in Downey, CA Say About Us
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Ronda Welker
We couldn’t have asked for a better contractor to work with than Alex. We were needing our home remodeled in a very short window of time and Alex and his crew were always on schedule and in touch with us throughout the whole remodel. We would definitely use them again.

Andrei Hienadz
I had a fantastic experience with Cornejos Builders! They exceeded my expectations in every way. From the initial consultation to the final walkthrough, their professionalism and craftsmanship shone through.
How Much Do Home Improvements Cost in Downey, CA
Home improvement costs in Downey vary as much as the homes themselves. Based on past projects, smaller jobs like deck repairs can start around $5,000, while larger full-home remodels can exceed $200,000. Most of our projects fall somewhere in between, lasting about one to four months, depending on the scope and materials.
Five Key Price Factors:
- Project Scope – A full interior remodel costs more than just replacing cabinets or flooring. The more rooms involved, the more time and materials required.
- Materials & Finishes – Whether you prefer durable granite countertops or luxury quartz, your selections impact your total.
- Layout Changes – Moving plumbing, walls, or electrical systems can add complexity but often boost functionality.
- Permits & Regulations – Downey’s building codes are clear but require professional compliance to avoid costly surprises.
- Custom Features – Want a custom kitchen island, open floor plan, or luxury fixtures? Those touches elevate both cost and design impact.
If you’d like to know what your project might cost, contact us with a few details. We’ll give you a clear, accurate quote so you can plan confidently.
Budget-Friendly & On-Time Completion
Budget
Think of it this way, if you invest $60,000 in a kitchen remodel you’ll enjoy for 15 years, that’s about $11 a day. Less than your morning coffee, and you get a space where you can actually make coffee. It’s not just an expense; it’s an investment in your comfort and home value.
Timelines
We also take timelines seriously. Construction can be messy, but it doesn’t have to take over your life. Our crews arrive when we say we will, keep things tidy, and respect your home. We plan carefully so your project stays on schedule from start to finish.
Our Home Improvements Process
Home improvements in Downey, CA should feel exciting, not overwhelming. We’ve built a process that keeps things clear and easy for you from the first call to the final walkthrough.
FAQs About Home Improvements in Downey, CA
How long do home improvement projects usually take?
Do I need permits for home improvements in Downey?
Yes, most structural or major remodeling projects require permits. Don’t worry, we handle all the paperwork with the City of Downey so you stay fully compliant and stress-free.
Can you work within my budget?
Absolutely. We tailor every project to your financial comfort zone. Whether you’re updating one room or your entire kitchen, we’ll suggest smart, durable materials that make sense for your goals and your wallet.
What’s included in your 5-year workmanship warranty?
Start Planning with Cornejos Builders!

Alexsander Cornejos
A well-planned remodel changes how you live in your home. If you’re ready to start, call Cornejos Builders at (562) 319-3178 or reach out through our contact page.
Visit our home improvements page for inspiration, ideas, and more about what we do. Every great project begins with a conversation, and we’d be happy to hear about yours.
Downey is a lively city in southeast Los Angeles County, known for its aerospace history, community spirit, and local landmarks. You can learn more about city services at the City of Downey, explore upcoming events at the Downey Theatre, or enjoy the green spaces listed on Downey Parks & Recreation. It’s a great place to live, and an even better place to make your home your own.