🏡 Building ADUs the Right Way
🧱 Introduction
Accessory Dwelling Units (ADUs) have become one of Los Angeles’ most popular ways to create passive income, increase property value, and provide flexible living space — all on your existing lot.
But not all ADUs are built the same. Between zoning codes, city permits, and construction quality, it’s easy to make costly mistakes if you don’t have the right team guiding you.
At Nail & Hammer Construction Corp, we specialize in designing and building ADUs that meet LADBS regulations, maximize your lot’s potential, and generate long-term return on investment.
Here’s how to do it the right way — from planning to profit.
🏠 Types of ADUs
Not every property or goal calls for the same type of ADU. Choosing the right one depends on your lot size, zoning, budget, and intended use (rental, family, or resale).
🔹 Attached ADU
An attached ADU shares a wall with the main home — often built as an extension, such as a new master suite or rental unit with its own entrance.
Cost-efficient because it shares utilities and structure.
Great for multigenerational living or guests.
Must meet the same fire, sound, and energy codes as the main dwelling.
🔹 Detached ADU
A stand-alone unit built in the backyard or open portion of your lot.
Offers maximum privacy and rental flexibility.
Typically ranges from 400 to 1,200 square feet.
Requires separate foundation, plumbing, and electrical lines.
Detached ADUs are the most popular choice in Los Angeles for long-term rental or short-term Airbnb income.
🔹 Garage Conversion ADU
A cost-effective favorite for LA homeowners.
Converts an existing garage into a legal dwelling.
Fastest type of ADU to build since the structure already exists.
Often requires structural retrofitting, new insulation, and plumbing.
At Nail & Hammer, we handle full garage conversion design, structural engineering, and LADBS approval — turning underused space into valuable square footage.
🏛️ Los Angeles Zoning & LADBS Permitting
Building an ADU in Los Angeles means working within specific zoning and building code rules set by the Los Angeles Department of Building and Safety (LADBS).
⚙️ Zoning Basics
Most R1, R2, and R3-zoned lots allow at least one ADU and one Junior ADU (JADU).
Key rules include:
Maximum size: 1,200 sq. ft. (or 50% of the main home).
Setbacks: 4 feet from rear and side property lines.
Height limits: Usually 16–25 feet, depending on zone.
Parking: No new parking required if within ½ mile of public transit.
🧾 The LADBS Permit Process
The city requires a plan check before construction begins. The process includes:
Architectural and structural plans prepared by licensed professionals.
Plan submission through the LADBS portal or in person.
Plan check corrections (if any) and revisions.
Permit issuance after city approval.
Inspections at major phases: foundation, framing, rough MEP, and final sign-off.
At Nail & Hammer Construction Corp, we handle the entire permit process, including engineering, energy calculations, and coordination with LADBS reviewers — saving you weeks of waiting and frustration.
💵 ROI Potential & Rental Income Data
ADUs aren’t just smart living solutions — they’re powerful investment tools.
📈 Los Angeles ADU ROI Highlights:
Average build cost: $180K–$300K, depending on type and size.
Average monthly rent (1-bed ADU): $2,000–$2,800.
Typical ROI timeline: 6–10 years, depending on financing.
A well-designed ADU can increase property value by 25–35% — especially in high-demand neighborhoods like Silver Lake, West Adams, and Highland Park.
Homeowners also benefit from flexibility: use the ADU for rental income now and as a family suite or home office later.
🧰 Building ADUs the Nail & Hammer Way
We’ve built ADUs across Los Angeles with a focus on:
Design-build efficiency: One team manages design, permits, and construction.
Turnkey project management: We coordinate all trades, inspections, and finishes.
Transparent pricing: Line-item estimates and progress reports at every phase.
Quality craftsmanship: 5th-generation carpenters ensuring precision in every detail.
Whether you’re building a rental property, expanding your home, or investing in long-term equity, we make the ADU process smooth, compliant, and profitable.
✅ Conclusion
An ADU is more than an extra unit — it’s an opportunity to build income, family flexibility, and long-term wealth.
With the right contractor and a clear understanding of LADBS requirements, your ADU can be a high-performing asset for years to come.
At Nail & Hammer Construction Corp, we help Los Angeles homeowners design, permit, and build ADUs the right way — with quality, compliance, and value at every step.
📞 Call 424-800-3704 today to schedule your ADU consultation and learn how to maximize your property’s potential.
