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ADU Webinar

What You’ll Learn at the Event

Join our free online webinar to learn how you can build an ADU (Accessory Dwelling Unit) on your property.

In this session we will explain:
• What an ADU is
• How ADUs work in California
• Typical costs and timelines
• How ADUs can create rental income or housing for family
• The basic steps to start your project

You will also see real ADU examples and have the chance to ask questions.

This webinar is perfect for homeowners who are curious about adding a second home in their backyard or planning for the future.

Reserve your spot and learn how an ADU could work on your property.

Reserve Your Visit

Online via Zoom

5:00 pm

- 7:00 pm

April 23, 2026

RSVP Now — Limited Spots Available!

Meet the Experts

Reserve Your Visit

Online via Zoom

5:00 pm

- 7:00 pm

April 23, 2026

RSVP Now — Limited Spots Available!

WHY adu

The Benefits of an ADU

Discover how an ADU can transform your property into an income source, adu-retirement plan, or modern family space — all without moving.

Earn Passive Income

Earn up to $2,500/month in rental income from your backyard.

Expand
Living Space

Add up to 1,200 sq. ft. of extra living area perfect for guests or work-from-home.

ADU map

Future-Proof Your Lifestyle

Build a flexible space that adapts with your family’s changing needs.

Simplify the Entire Process

IMKAT handles design, permits, and construction start to finish.

The Perfect heart
Retirement Plan

Thousands of retirees are downsizing with accessible, low-maintenance ADUs.

Increase Property Value

Boost your home’s value by 25%–35% with a quality-built ADU.

Testimonials

Homeowners Love Building With IMKAT.

With hundreds of successful ADU projects completed, we’re proud to be one of the most trusted ADU builders across California. See what real homeowners have to say about working with our team.

Explore Our Interior Design Packages

Choose from modern, classic, or premium finish packages — curated to make your ADU look stunning inside and out. Download our brochure to explore materials, color palettes, and design styles.

Imkat printbook

Our Work

Recently Completed ADUs
Designed for Independent Living

Recently Completed ADUs Designed for Independent Living

Explore a few of our recently built ADUs across California, designed to offer comfort, accessibility, and independence for retirees.

Frequently Asked
Questions About ADUs

Everything you need to know about building, pricing, and designing your backyard ADU with IMKAT. Whether you’re just starting or ready to build these answers cover it all.

Didn’t find your answer?

What are the benefits of building an ADU?

ADUs offer several advantages:

  • Affordable Housing: They provide an affordable housing option without the need for purchasing additional land or major new infrastructure.

  • Additional Income: Homeowners can generate rental income by leasing the ADU.

  • Family Flexibility: ADUs allow extended families to live close together while maintaining privacy.

  • Efficient Use of Space: They make use of underutilized spaces, enhancing property value and utility.

ADUs can share utilities with the main home or have separate meters. Some cities require separate sewer and water connections. Our ADU consultants will assess your electrical panel to determine if it can support your ADU or if an upgrade is needed.

Our costs range from $125,000 to $300,000+, depending on size, location, and materials. Garage conversions are typically the cheapest, while detached ADUs are the most expensive.

View some of our models and consult with our ADU specialists for pricing. 

Our pricing does not include utilities and permits as they vary by property.

Permits are required for construction, zoning, and utilities. The permit process takes 3-5 months and varies by city. California law requires cities to approve or deny ADU applications within 60 days.

 

Yes! ADUs can be rented long-term (30+ days). Short-term rentals (Airbnb) may be restricted based on city rules.

  • Detached ADUs: Up to 1,200 sq. ft.
  • Attached ADUs: Up to 50% of the primary home’s size (or 800 sq. ft., whichever is larger).
  • JADUs: Max 500 sq. ft.
  • Detached ADUs: Up to 1,200 sq. ft.
  • Attached ADUs: Up to 50% of the primary home’s size (or 800 sq. ft., whichever is larger).
  • JADUs: Max 500 sq. ft.

Be aware that ADU size limits may vary by county and are subject to local zoning regulations. For exact requirements, consult your county officials or speak with one of our representatives for more information.

Generally, no—ADUs are part of the main property. However, California’s SB 9 law allows lot splits in certain cases, which may enable separate ADU ownership.

For more details, check with your local planning department or contractor.

In California, adding an ADU increases property taxes only on the new unit, not the main home. The tax hike is typically 1–1.5% of the ADU’s assessed value. For a $200K ADU, expect an annual increase of $2K–$3K. Prop 13 caps future annual increases at 2%. Consult your county assessor for exact details.

Yes! We partner with RenoFi to offer financing options for your ADU project.

Learn More Here

Detached ADU

Best for rental income or a private guest house — completely separate from your main home.

Attached ADU

Ideal for expanding your living area or creating an in-law suite with direct access.

Garage Conversion

Perfect for turning unused space into a studio, office, or small apartment at lower cost.

Less than 300 sq ft

Ideal for compact studios or garage conversions.

300–500 sq ft

Great for one-bedroom units or small offices.

500–1,000 sq ft

Perfect for two-bedroom ADUs or guest houses.

1,000–1200 sq ft

Best for larger additions or multi-room family spaces.

More than 1200 sq ft

For custom large-scale extensions or dual-unit builds.

I don’t know yet

No worries, our team will help you estimate the right size during consultation.

$150K and Under

Basic garage conversion or compact studio-sized ADU.

$150K–$199K

Ideal for small 1-bedroom ADUs with essential finishes.

$200K–$249K

Perfect for mid-sized 1–2 bedroom units with modern interiors.

$250K–$300K

Great for larger detached ADUs or premium build quality.

$350K+

Best for custom floor plans, luxury finishes, or multi-room units.

Yes, I already have plans

Great! Upload them later so we can review your layout and prepare an estimate faster.

No, I’d like help with plans

No problem our design team can guide you from concept to permit-ready blueprints.

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Enter your details to get instant access to all finish packages, color palettes, and material options for your ADU.