Custom Attached ADU Construction in Los Angeles
Expand your home’s footprint and value with a professionally integrated living unit. From Junior ADUs (JADU) to full-scale additions, we design and build permitted attached spaces that perfectly match your home’s existing architecture and style. Request a Feasibility Study.
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The Benefits of Attached ADU Additions
HOME EXPANSION EXPERTS
An attached ADU is the ultimate solution for homeowners looking to expand their living space without sacrificing backyard acreage. Unlike standalone units, an attached addition becomes a physical part of your primary residence, offering a seamless transition between the two spaces. This approach is ideal for multi-generational living, providing a private, fully permitted suite for family members while keeping them close. Our team specializes in architectural integration, ensuring that every addition — whether it’s a new wing or a Junior ADU (JADU) — perfectly matches your home’s original style, roofline, and exterior finishes for a cohesive, high-end look.
Featured Attached ADU & Home Addition Projects
Right Here in Los Angeles
Browse our gallery of seamless home expansions and attached guest houses across Los Angeles. We specialize in architectural integration, ensuring every addition matches your home's original style while adding modern, fully permitted living space.
Seamless Home Expansion Process
OUR PROVEN SYSTEM
Adding an attached ADU to your primary residence is a sophisticated engineering task that requires a deep respect for your existing home. At Kobzev Pro Contracting Group, we’ve refined our home addition workflow into a precise, transparent system designed to minimize disruption to your daily life while maximizing your property’s potential. We don’t just build a room; we expand your home’s story.
Our expertise lies in the “surgical” connection of new structures to old ones — ensuring that foundation ties, roofline transitions, and utility integrations are flawless and long-lasting. Our project managers oversee every phase, from custom architectural drafting that matches your home’s character to securing specific LADBS permits for residential additions. We ensure a clean job site and a predictable timeline, giving you the confidence that your new living space will be delivered with the highest levels of integrity and craftsmanship.
Step 01:
Structural & Connection Audit
We start by evaluating your home’s existing foundation, roofline, and load-bearing walls. Our engineers plan the most secure way to tie the new ADU into your current structure, ensuring a seamless transition and long-term stability for the entire building.
Step 02:
Architectural Matching & Permits
Our architects design an addition that looks like it was always part of your home. We handle all the complex permitting paperwork with the City of Los Angeles, focusing on zoning, setbacks, and fire safety codes specific to attached residential units.
Step 03:
Precision Framing & Integration
This is the critical phase where the addition meets the main house. Our licensed crews perform high-precision framing and structural tie-ins, ensuring weather-tight seals and perfectly matched exterior finishes that blend with your home’s original aesthetic.
Step 04:
Interior Finishing & Delivery
The final stage focuses on creating a move-in-ready living space. From electrical sub-panels to premium interior finishes, we ensure your new attached ADU is fully functional. After the final city inspection, we hand over the keys to your beautifully expanded home.
Why Homeowners Choose Us for Home Additions
Building an addition is a highly personal project that requires a contractor who respects your home’s history and structural integrity. At Kobzev Pro Contracting Group, we specialize in seamless attached ADUs that offer perfect architectural harmony with your primary residence. As a fully licensed B-General Contractor based in Van Nuys, we understand the specific engineering challenges of residential expansions in the San Fernando Valley. When you choose us, you are partnering with a team dedicated to clean job sites, transparent communication, and superior craftsmanship, ensuring your new living space feels like it was always part of your home.
Seamless Architectural Design
Matching an addition to an existing home is an art. We manage every detail—from matching rooflines and siding to interior trim and window styles — ensuring your attached ADU is 100% compliant with LADBS residential and fire safety codes.Transparent Fixed Pricing
Home additions shouldn't be a financial guessing game. We provide detailed, line-item estimates after a comprehensive structural audit of your primary residence. We value-engineer your project to prevent surprise change orders and protect your investment.Structural Integration Guarantee
We prioritize the long-term health of your home. Using surgical structural ties and high-performance weatherproofing, we ensure your addition is energy-efficient and built to last. We stand behind our work with a comprehensive warranty for your peace of mind.
Frequently Asked Questions
Planning an ADU, kitchen, or bathroom in LA? Get expert answers to start your project right.
Absolutely. We are a full-service design-build company. This means we handle the entire process, including architectural drawings, engineering, and navigating the Los Angeles Department of Building and Safety (LADBS) to secure all necessary permits for your ADU or remodel.
Yes — in most cases, Encino homeowners can legally convert an attached or detached garage into a fully permitted ADU. California state law (effective since 2020 and strengthened by subsequent legislation) requires the City of Los Angeles to approve garage conversion ADUs on single-family lots that meet basic requirements. Under current LA regulations, you are generally not required to replace the parking space you remove when converting a garage to an ADU, which makes this one of the most accessible ADU options available.
To qualify, the garage typically needs to meet minimum ceiling height requirements, be connected to the property’s utility systems, and comply with setback rules. Interior upgrades — insulation, drywall, HVAC, plumbing if a bathroom is added, and electrical — are standard parts of the conversion. Kobzev Pro specializes in garage-to-ADU conversions throughout Encino and handles every phase: structural assessment, architectural plans, LADBS permits, and full construction.
No — Santa Monica is an independent city with its own Building & Safety Division under the Community Development Department (CDD). ADU permits in Santa Monica are submitted to the City of Santa Monica, not to the Los Angeles Department of Building and Safety (LADBS). Santa Monica’s ADU regulations are governed by the Santa Monica Municipal Code (SMMC § 9.31.025) and California state ADU law. Additionally, most properties in Santa Monica — particularly those south of the I-10 freeway — are located within the California Coastal Zone and require a Coastal Development Permit (CDP) in addition to standard building permits. This adds a layer of review not required for ADU projects in other Los Angeles neighborhoods. Kobzev Pro manages the full permit process with the City of Santa Monica, including CDP applications where applicable.
Building an ADU in Encino, CA typically costs between $150,000 and $400,000 or more, depending on the type of unit, size, and level of finishes. A garage conversion is the most affordable option, generally ranging from $80,000 to $150,000, since the existing structure eliminates foundation and framing costs. A detached ADU built from the ground up on an Encino lot typically runs $200,000 to $400,000+, depending on square footage and design complexity. Attached ADUs fall somewhere in between.
Several factors affect the final cost: lot conditions, utility connections, architectural design, permit fees, and material selections. In Encino — where average home values exceed $1.5 million — a well-built ADU commonly adds $300,000 to $500,000 in property value, making the investment especially strong. Use our ADU Cost Calculator to get a quick ballpark estimate based on your specific project type and size. For a precise, fixed-price proposal, Kobzev Pro offers free in-home consultations with no obligation.
We trench new lines for sewer, water, and electricity directly to the main house or a separate meter. We manage all coordination with LADWP and the city.
ADU construction costs in Los Angeles vary based on the project type, square footage, and chosen finishes. At Kobzev Pro Contracting Group, we offer transparent, value-driven pricing to help you maximize your ROI:
- Garage to ADU Conversions: Pricing typically starts at $250 per sq. ft. Since we leverage your existing structure, this is the most cost-effective way to add a legal living unit to your property.
- New Ground-Up ADU Construction: For detached or attached units built from scratch, pricing starts at $300 per sq. ft. This covers complete site preparation, new foundation, framing, and full utility integration.
Please note: These are baseline investment figures for standard designs. Final pricing depends on your specific architectural choices, material selections (Standard vs. Luxury), LADBS permit fees, and the complexity of utility hookups. Contact us for a detailed, line-item estimate tailored to your lot.
Seamlessly Integrate Your New Living Space
family’s needs. Whether you’re planning a private suite for parents or a high-end Junior ADU (JADU) for rental income, Kobzev Pro Contracting Group team are here to handle the entire journey. From matching your current architecture to securing complex structural permits, we ensure a stress-free expansion that adds lasting value to your Los Angeles property.
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