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.
In most Los Angeles areas, especially those near public transit, current California law (SB 9 and ADU mandates) eliminates the requirement to replace covered parking when converting an existing garage. This makes the process much more affordable and feasible for most homeowners.
A custom build usually takes 9-12 months: 3-5 months for design and LADBS permits, and 6-7 months for construction and final inspections.
Not necessarily. We conduct a structural assessment to ensure your existing slab can support the new living space. If needed, we perform minor retrofitting or moisture barrier installation to meet modern California residential building codes.
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.
While every project is unique, a standard Garage Conversion in Los Angeles typically takes 2 to 4 months for construction, once permits are issued. The permitting phase can take an additional 2–4 months depending on the city’s current backlog. We provide a detailed timeline before we start.
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.
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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