Second Story Addition Contractors in Los Angeles
Second Story Addition Contractors
in Los Angeles
Expand Your Home with Expert Second Story Addition Services
If you’re looking to expand your home and increase usable space, Cala Builders is among the trusted second-story addition contractors in Los Angeles. Adding a second level not only increases your living space and square footage, it can also transform how your home in Los Angeles meets the needs of your family. Whether you want more bedrooms, a larger living area, or a home office, a story addition offers growth without relocating.
As experienced addition contractors, we provide full‑service design and construction, help you navigate permitting and building codes, and ensure your project stays on schedule with strong project management throughout the construction process.
Why Choose a Second Story Addition?
A second story addition is one of the most effective ways to expand your home without changing its footprint. Instead of expanding horizontally, homeowners build upward to:
- Create a master suite or additional bedrooms
- Add bathroom space for a growing family
- Gain a dedicated home office or media room
- Improve traffic flow and interior layout
- Add value and versatility to an existing property
Second story additions are especially valuable for growing families who want more room but prefer staying in their current neighborhood.
What Our Clients Say
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Licensed, insured, and trusted by property owners across Los Angeles County (License #1156496). Speak with a Cala Builders specialist to discuss your goals and receive a clear project scope and cost estimate, no pressure, no obligation.
Transparent Pricing
ADU Construction Cost in Los Angeles
ADU pricing in LA varies by type, size, site conditions, and finish level. The table below covers realistic starting points for each ADU type Cala Builders constructs across Los Angeles County. All prices include design, permits, and full construction.
| ADU type | Starting price | Typical range | Best for |
|---|---|---|---|
| Garage Conversion ADU Best valueFastest and most affordable ADU path using your existing garage structure | $85,000 | $85K – $140K | Homeowners with an existing attached or detached garage seeking the fastest, most affordable ADU path |
| Junior ADU (JADU)Converting an existing room within the primary home into a separate unit | $90,000 | $90K – $150K | Converting an existing room or portion of the primary home into a separate unit with its own entrance |
| Attached ADU Most popularA self-contained unit added to and connected with the main home | $110,000 | $110K – $200K | Adding a self-contained unit connected to the main home, ideal for multigenerational living or rental income |
| Detached ADUA fully standalone backyard structure with maximum privacy | $140,000 | $140K – $280K | A standalone backyard structure offering maximum privacy, with the strongest rental income potential in LA |
| Two-Story Detached ADUFull apartment-style unit maximizing square footage on smaller lots | $200,000 | $200K – $380K | Maximizing square footage on smaller lots, a full apartment-style unit with upper and lower floors |
| Hillside ADU PremiumEngineered for sloped or canyon lots with specialized foundation work | $180,000 | $180K – $350K | Sloped or canyon lots requiring engineered foundations, retaining walls, and site-specific structural planning |
What’s included in every Cala Builders ADU price: Site analysis, custom architectural design, all city permit fees and filing, foundation, framing, plumbing, electrical, HVAC, insulation, drywall, flooring, interior finishes, and final inspection sign-off. No hidden costs.
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Licensed, insured, and trusted by homeowners across Los Angeles County (License #1156496). Talk to an ADU specialist general contractor and find out exactly what your ADU will cost.
ADU Cost by Square Footage
Not sure which ADU type fits your budget? Use this size-based breakdown to estimate costs before committing to a configuration. All ranges reflect Los Angeles market pricing including design, permits, and full construction by Cala Builders.
| Size | Estimated Cost Range | Best ADU Type |
|---|---|---|
| 400 sq ft | $85K – $120K | Garage conversion / JADU |
| 500 sq ft | $95K – $140K | Attached / garage |
| 600 sq ft | $110K – $160K | Detached / attached |
| 800 sq ft | $130K – $210K | Detached |
| 1,000 sq ft | $155K – $250K | Detached |
| 1,200 sq ft | $180K – $320K | Two-story detached |
Los Angeles allows detached ADUs up to 1,200 sq ft. Larger units typically offer better cost-per-square-foot value. Final pricing depends on site conditions, finish level, and utility connections.
What affects your ADU cost in Los Angeles
01. Size & square footage
Larger ADUs cost more per project but less per sq ft. LA allows up to 1,200 sq ft for detached ADUs.
02. Foundation type
Slab foundations are the most affordable. Hillside or raised foundations add $15K–$60K depending on soil and slope.
03. Finish level
Standard finishes keep costs at the lower end. Premium appliances, custom tile, and high-end fixtures add $20K–$60K.
04. Lot conditions
Access, soil type, utility proximity, and existing structures on the lot all impact site preparation costs.
05. Permit complexity
Most LA permits are streamlined under SB 9 and SB 13. Complex lots or HOA oversight may require additional review.
06. Utility connections
Separate meter, new sewer lateral, or panel upgrade can add $8K–$25K depending on distance and capacity needed.
Our Second Story Addition Services
Benefits of Adding a Second Story
What to Expect During Your Second Story Addition
Consultation and Goal Setting
We begin with a consultation to determine your needs and how a second story addition can fulfill them. This includes reviewing existing plans and evaluating structural options.
Design Development
We create detailed design plans that you review and refine. This step sets the foundation for a successful build by addressing layout, stairs, bedroom placement, and overall flow.
Permitting and Approval Process
Our team prepares and submits all plans and documentation for approval through the City of Los Angeles and any relevant agencies. We handle questions, revisions, and compliance checks as needed.
Construction Phase
Once permits are approved, construction begins. This phase includes structural work, framing, roofing, and all interior systems. We work carefully to minimize impact on your daily life while maintaining a safe, clean job site.
Final Inspection and Delivery
After completion, we guide you through the final inspection and ensure every detail aligns with your expectations.
Why Cala Builders Is a Top Choice
Choosing the right addition contractor is essential for a successful project. Here’s why homeowners trust Cala Builders:
- Works Closely With Clients: We communicate clearly and incorporate your feedback at every phase.
- Careful Planning: Our team anticipates challenges and solves problems before they arise.
- Staying on Schedule: With reliable project management, we keep your addition on track.
- High-Quality Construction: Our commitment to materials and workmanship ensures results that last.
- Experienced Team: From design to inspection, our professionals guide you with confidence.
Common Questions About Second Story Additions
How long does a second-story addition take?
Timeline depends on project complexity, but most projects take several months from planning to completion.
Will I be able to live in my home during construction?
In many cases, yes. We plan phases to reduce inconvenience and maintain safety.
Do second-story additions require permits?
Yes. All additions must meet local building codes and zoning regulations. We handle the permitting process for you.
Can I incorporate a home office or extra bathroom?
Absolutely. Many homeowners use second-story additions to add bedrooms, offices, and bathrooms.
Ready to Build a Second Story Addition?
If you’re ready to add space and value to your home, our second-story addition contractors in Los Angeles are here to help. From design plans and permits to construction and final walkthroughs, we bring experience and precision to every project.
📞 Call us today to schedule your consultation and start expanding your home.
Have a question? Get in touch
Have a question? Get in touch
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