ADU Construction in Garden Grove — Built Start to Finish
IBA Builders helps Garden Grove homeowners build ADUs from planning to final inspection. One licensed contractor manages the entire process, including permits and construction.
A Licensed ADU Builder Serving Garden Grove
IBA Builders is a licensed general contractor building ADUs in Garden Grove, CA. All architectural plans, engineering, permit applications, and construction are handled in-house by our team, ensuring a single point of contact from start to finish.
Many homes in Garden Grove were built in the postwar era, often with moderate lot sizes and established landscaping. This means access for equipment and staging materials is sometimes limited, so ADU design and construction must account for site logistics, utility placement, and careful sequencing to avoid disrupting mature trees or existing structures.
Our ADU Services
Every project is designed, permitted and built by one licensed contractor — from the first drawing to final inspection.
Backyard ADU
A new ADU in your backyard with complete planning, permits and construction.
Learn more →Detached ADU
A standalone ADU designed specifically for your property and lot.
Learn more →Garage Conversion
Convert your existing garage into a fully permitted, livable ADU.
Learn more →Custom ADU Construction
Complete custom ADU projects designed around your property and goals.
Learn more →ADU Construction Across Garden Grove
From design and permits to construction and final inspection, IBA Builders serves homeowners throughout Garden Grove and the surrounding Orange County area — including these neighborhoods:
Feasibility and Design in Garden Grove
Before design starts, our team reviews your lot’s dimensions, access points, and existing utility connections. We check setbacks, lot coverage, and any easements that may affect ADU placement. This helps ensure the design fits both city requirements and your property’s layout.
Permitting and Plan Review Process
The permit set is assembled by coordinating architectural, structural, and energy documents. Corrections can result from requests by city plan reviewers, often related to site details or code clarifications. Our team manages all responses and updates until approval is secured.
Construction and Inspections Sequence
Construction is sequenced from site prep and foundation through framing, utilities, and finishes. Inspections by city officials occur at key milestones, and homeowners are updated on progress and upcoming steps. Site safety and clear communication are maintained throughout.
Handover and Final Walkthrough
After final inspection, the permit record is attached to your property’s address. Homeowners receive a full project handover, including warranty information and all documentation for the completed ADU.
Planning an ADU in Garden Grove?
Get an on-site assessment from a licensed general contractor — real feasibility, permitting and pricing for your lot, not a square-footage guess.
One Licensed Contractor, Start to Finish
No juggling designers, engineers and subs — we manage the entire ADU under one contract, to code, the first time.
Licensed General Contractor
Licensed California contractor (CSLB #1074505) managing every stage of your Garden Grove ADU project.
Permits to Final Inspection
Design, engineering, permits, construction and inspections handled under a single contract.
Local Orange County Experience
We build to local code and know how Garden Grove plan check and inspections actually run.
Building Across Los Angeles County Since 2015
Founded in 2015 by Itamar Assulin, IBA Builders is a licensed general contractor (CSLB #1074505) based in Sherman Oaks. We serve homeowners throughout Los Angeles County — including Garden Grove — building ADUs, custom homes, remodels and outdoor construction.
Our approach is simple: one licensed contractor manages design, engineering, permits, construction and inspections under a single contract — so your project stays accountable, on-code and on-track from the first drawing to final sign-off.
About IBA Builders- Since 2015Founded in Los Angeles
- CSLB #1074505Licensed General Contractor
- Sherman Oaks13743 Ventura Blvd #360
- LA CountyAreas served, incl. Garden Grove
Advanced Methods & Equipment
The unseen work that protects your investment for decades.
Engineered Foundations
Site-specific foundation and structural detailing designed to your Garden Grove lot and soil conditions.
Modern Waterproofing
Liquid-applied membranes and premium flashing for a vapor-tight, water-managed envelope.
Code-First Sequencing
Framing, mechanical and inspection phases sequenced so work passes the first time.
ADU FAQs for Garden Grove Homeowners
Does IBA Builders work in Garden Grove?+
Yes, IBA Builders serves Garden Grove and all of Orange County. Our team is experienced with the city’s permitting process and local building conditions.
If you live in Garden Grove or a nearby city, we can handle your ADU project from initial planning through final inspection.
What permits are needed for an ADU in Garden Grove?+
Building an ADU in Garden Grove requires permits for planning, building, and often utilities such as electrical, plumbing, and mechanical. Our team prepares and submits all required drawings and documents to the city for review.
We handle all communications with the city and manage any corrections or clarifications that come up during the review process.
What can I build on my lot in Garden Grove?+
The size and placement of your ADU depend on your lot’s dimensions, existing structures, and city rules on setbacks and lot coverage. Most single-family lots in Garden Grove can accommodate either a detached or attached ADU, but the final design needs to account for access and utility connections.
We assess your property in person to determine what is feasible before beginning design work.
How long does an ADU project take from start to finish?+
The overall timeline for an ADU depends on the scope of work and how quickly plans move through city review. Once design is complete, we provide a detailed schedule for each project phase.
Factors such as site conditions, utility upgrades, and permit review can all influence the total duration.
What determines the cost of an ADU in Garden Grove?+
ADU cost is mainly driven by the size of the unit, site conditions, utility connections, and the level of interior finishes you select. The complexity of access and any upgrades needed for older homes can also impact cost.
We provide a project-specific estimate after an on-site assessment and discussion of your goals for the space.
Should I convert my garage or build a detached ADU?+
A garage conversion uses the existing structure, which can simplify construction and utility connections, but may have limitations on layout and privacy. Detached ADUs offer more flexibility in design and separation from the main house, but require new foundations and additional site work.
We help you compare both options based on your property and goals before making a recommendation.
Can I rent out my ADU in Garden Grove?+
Many homeowners in Garden Grove use ADUs as rental units, but it’s important to confirm current city and county regulations regarding rentals. Rules can change, so always check with the city before listing an ADU for rent.
We can guide you on the process and connect you with resources to understand your responsibilities as a landlord.
What should I prepare before my first meeting with IBA Builders?+
Before your first meeting, gather any available property survey, prior plans, and recent photographs of your yard and electrical panel. Also, think about your goals for the ADU, such as who will use it and what features matter most to you.
This information helps our team provide tailored guidance and a more accurate project assessment.
Ready to Build Your Garden Grove ADU?
Book your free consultation and speak directly with a licensed ADU builder.