Argi Avetisyan
Co-founder & CEO
Built around your life
Los Angeles ADU Design & Build
A little more room for what matters.
A home for family. A place to call your own. An ADU (accessory dwelling unit) is an independent home on the same property as a primary residence. We help Los Angeles homeowners create these spaces, handling the design, permits, and construction along the way.
Detached homes · Conversions · Attached ADUs · More possibilities
A closer lookReal spaces.
Real spaces.
New possibilities.
It's easier to imagine your own ADU when you can see the details. Browse photographs from our existing project gallery, then look at the different ways your property could take shape.
Explore projectsProject gallery
From the outside in.
Browse the spaces, finishes, and everyday details.
Your space, your way
What are you looking to build?
An ADU (accessory dwelling unit) is an independent home on the same property as a primary residence. Start with the option that sounds closest; we'll work out the details together.
Detached ADU
A separate backyard home with a kitchen, bathroom, and entrance of its own.
From $160,000+6–12 months, full project
Planning details
Privacy and flexibility for family, guests, or a longer-term living arrangement. Size, site work, utilities, finishes, design, and permits shape the final budget and schedule.
Conversion
Turn an existing garage or other space into a permitted home.
From $90,000+6–8 months, full project
Planning details
Existing foundations, walls, utility capacity, and necessary upgrades can significantly affect scope. We'll look at your space before suggesting a path.
Attached ADU
Add an independent space connected to your existing house.
From $120,000+6–8 months, full project
Planning details
Access, privacy, structural connections, utilities, finishes, design, and approvals all matter when adding to your home.
Other / SB9
Considering a JADU, addition, or other property-specific possibility?
Property-specificBudget & schedule
Planning details
Eligibility, existing conditions, intended use, design, approvals, and construction needs vary. A property review is the best starting point.
Starting budgets are planning starting points, not quotes. Timelines cover the full project, from design through inspections, and may change with property conditions and local review.
Compare budgets and full-project schedules side by side
| ADU type | Starting budget | Full-project schedule | Often works well for |
|---|---|---|---|
| Detached ADU | $160,000+Site work, size, utilities, finishes, design, and permits affect the total. | 6–12 monthsPreliminary design-to-move-in range; local review and site conditions can change timing. | Independent backyard living with more separation. |
| Conversion | $90,000+Existing structure, repairs, utilities, finishes, design, and permits affect the total. | 6–8 monthsIncludes design, approvals, construction, and inspections; conditions and review times vary. | Adapting an existing garage or other space. |
| Attached ADU | $120,000+Structural work, utilities, finishes, design, and permits affect the total. | 6–8 monthsIncludes design, approvals, construction, and inspections; connections and review times vary. | Independent space connected to the main home. |
| Other / SB9 | Property-specificClassification and existing conditions shape the budget. | Property-specificApproval path and scope determine the schedule. | JADUs, additions, and SB9 where eligible. |
How we workOne project.
One project.
Six clear stages.
We help keep the moving parts together, from an initial look at your property to the last inspection. You'll know what comes next.
Talk through your project- 01
Feasibility
We review your goals, property information, access, and utility considerations.
- 02
Design
We shape a layout and design direction for you to review and approve.
- 03
Engineering
We coordinate the required structural and energy documentation with qualified professionals.
- 04
Permits
We coordinate submissions and plan-check responses; agencies control approvals and review timing.
- 05
Construction
We coordinate the agreed build scope and help you navigate decisions as work progresses.
- 06
Completion
We coordinate required inspections and closeout work. Agencies determine final sign-off.
Explore further
View all projects More from the portfolio
Useful next readsGet oriented,
Get oriented,
at your pace.
Compare budgets, browse floor plans, or learn how ADU rules work near you.
Good questions, clear answers
Before you begin
A few things homeowners ask us most. Explore all 26 questions below.
An accessory dwelling unit is an independent secondary home on a property with a primary residence. It may be detached, attached, or created by converting eligible existing space.
Starting budgets on this page are $160,000+ for detached, $90,000+ for conversions, and $120,000+ for attached ADUs. Your actual budget depends on the site, size, design, utilities, finishes, and approvals. Read our ADU Cost Guide for budget categories. Read the ADU Cost Guide.
Preliminary full-project ranges are 6–12 months for detached ADUs and 6–8 months for conversions and attached ADUs. These include planning, design, approvals, construction, and inspections. Property conditions and local review can change the schedule.
ADU projects generally require building permits. GatherADU coordinates plans, submissions, and responses to corrections; the reviewing agencies determine requirements and approval timing.
Rental rules depend on your city, property, and proposed use. Check applicable local requirements before making plans for a tenant or short-term rental.
Permitted size depends on the ADU type, property, and applicable local rules. Practical options for your lot can be reviewed during a consultation.
A garage conversion adapts an existing garage into an independent living space. The foundation, structure, utility capacity, and layout need evaluation before scope and budget can be set.
An ADU can affect a property tax assessment. Ask your county assessor or a qualified tax professional how your specific project would be treated.
Parking requirements and exemptions depend on the project and local rules. Confirm the requirements for your address during feasibility review.
An ADU is designed and permitted as an independent dwelling with living facilities. A guest house may be classified differently; the intended use and approved plans determine what is allowed.
HOA requirements can affect design and review. Share your HOA documents when we discuss feasibility so applicable requirements can be checked.
Home equity products and construction financing are among the options homeowners may explore. Terms, eligibility, and availability depend on the lender and your finances; speak with a qualified lender.
Owner-occupancy rules can differ by project type and jurisdiction. Confirm the rules for your address and proposed use before proceeding.
Setbacks depend on the type of unit, existing structures, site conditions, and applicable rules. GatherADU reviews your lot and proposed placement during feasibility.
Allowable height depends on your proposed ADU and local requirements. A property review helps identify the design envelope.
A Junior ADU is a smaller dwelling space created within an eligible existing home. Its facilities and requirements differ from a standard ADU, so the property should be reviewed before choosing this route.
Whether both are possible depends on your property and applicable rules. Available combinations can be explored for your address.
An independent home needs appropriate electrical, water, sewer, and heating/cooling provisions. Existing capacity and the connection approach should be evaluated for your property.
Our starting budget for a conversion is $90,000+. Structural repairs, utilities, design, permits, finishes, and site conditions affect the final scope. See the ADU Cost Guide for budget categories. Read the ADU Cost Guide.
Kitchen facilities are part of ADU design, but specific equipment and layout requirements depend on the unit type and reviewing jurisdiction. We plan those details during design.
Potential rent depends on location, unit size, condition, and market demand. GatherADU does not promise rental income; consult local rental comparables before making a financial decision.
Separate sale may be subject to specific property and local requirements. Seek advice from a qualified real estate or legal professional before assuming separate ownership is possible.
A prefab ADU is built partly or largely off-site and delivered for installation. Site work, utilities, foundation, and local approvals are still important parts of the project.
Yes. GatherADU coordinates design documents, permit submissions, and responses to plan-check comments. Agencies set their own requirements and decide when approvals are issued.
Resale impact varies with your market and property. We cannot promise an increase in value or a return on investment; a local appraiser or real estate professional can advise on your situation.
Please tell us your preferred language when you contact us, and we will confirm what support is available for your project.
Your next stepLet's talk about
Let's talk about
your space.
Tell us what you have in mind, even if you're not sure which kind of ADU makes sense yet. We'll start with the property and your goals.
Book My Free ConsultationUse the booking calendar to choose an available appointment. Sending the form is a request, not a scheduled appointment.
Or call (323) 591-3717Request an ADU assessment
Share a few details and we'll reach out about next steps. To choose an available consultation appointment instead, use the booking calendar.