Homes & ADUs with character.

Homes & ADUs with character.

Customized to you.

Customized to you.

Designed & built by one expert team.

Designed & built by one expert team.

A modern two-story house with a sloped metal roof, featuring large windows with red frames. The house is surrounded by a landscaped garden with various plants and rocks, and a pathway leading to the entrance. In the foreground, there is a bicycle parked beside the house, with mountains visible in the background. The scene is set in a sunny environment.
A modern two-story house with a sloped metal roof, featuring large windows with red frames. The house is surrounded by a landscaped garden with various plants and rocks, and a pathway leading to the entrance. In the foreground, there is a bicycle parked beside the house, with mountains visible in the background. The scene is set in a sunny environment.

With 80+ ADUs & homes completed across LA County since 2019, we deliver tailored designs and transparent pricing through our streamlined design-build process.

With 80+ ADUs & homes completed across LA County since 2019, we deliver tailored designs and transparent pricing through our streamlined design-build process.
Serving LA City, unincorporated LA County (including Altadena rebuilds), Pasadena, Glendale, Santa Monica, and beyond!

Altadena Home Rebuild

1000 sf, 2 bed, 2 bath

Jane's Cottage Permit-ready Plan

1200 sf, 2 bed, 2 bath

Spanish Courtyard Permit-ready Plan

1200 sf, 2 bed, 2 bath

Spanish Courtyard Permit-ready Plan

1200 sf, 2 bed, 2 bath

Los Feliz Historic ADU

500 sf, 1 bed, 1 bath

Hollywood Grove Historic ADU

450 sf, 1 bed, 1 bath

Altadena Home Rebuild

1000 sf, 2 bed, 2 bath

Jane's Cottage Permit-ready Plan

1200 sf, 2 bed, 2 bath

Spanish Courtyard Permit-ready Plan

1200 sf, 2 bed, 2 bath

Spanish Courtyard Permit-ready Plan

1200 sf, 2 bed, 2 bath

Los Feliz Historic ADU

500 sf, 1 bed, 1 bath

Hollywood Grove Historic ADU

450 sf, 1 bed, 1 bath

Two paths to a perfect project:

Custom Design, Streamlined

Custom Design, Streamlined

Our architects create one-of-a-kind homes through our proven, streamlined process — with guardrails that focus design and decisions so your project stays on time and budget.

Our architects create one-of-a-kind homes through our proven, streamlined process — with guardrails that focus design and decisions so your project stays on time and budget.

Our architects create one-of-a-kind homes through our proven, streamlined process — with guardrails that focus design and decisions so your project stays on time and budget.

Permit-ready Plans

Permit-ready Plans

Want to skip months of design time? Our architect-designed permit-ready plans are optimized for LA zoning. Easily personalize the finishes and details.

Want to skip months of design time? Our architect-designed permit-ready plans are optimized for LA zoning. Easily personalize the finishes and details.

Want to skip months of design time? Our architect-designed permit-ready plans are optimized for LA zoning. Easily personalize the finishes and details.

What will you build with Otto?

Homes & ADUs

Single family units designed for your lot.

Multi-unit clusters

Add 2+ freestanding units with new state laws.

Fire rebuilds

Like-for-like or create something new.

Friend compounds

Balance individual and group design needs.

Homes & ADUs

Single family units designed for your lot.

Multi-unit clusters

Add 2+ freestanding units with new state laws.

Fire rebuilds

Like-for-like or create something new.

Friend compounds

Balance individual and group design needs.

Homes & ADUs

Single family units designed for your lot.

Multi-unit clusters

Add 2+ freestanding units with new state laws.

Fire rebuilds

Like-for-like or create something new.

Friend compounds

Balance individual and group design needs.

Why choose Otto?

Design-Focused
Design-Build

Most builders don't have architects on staff. We do, from MIT, UC Berkeley, UCLA, and Rice. That changes the quality of the homes we deliver, and the decisions we make at every stage, from feasibility through finish selection.

One team, one point of accountability.

Design, permitting, and construction live under one roof. The same team that shapes your home is also responsible for getting it permitted and built. No handoffs between separate firms, no finger-pointing.

Clarity before commitment.

Our clients don’t want hidden costs or lost control, so we bring informed budgeting and transparent decision-making from day one. That means you'll understand scope and pricing before construction starts.

Built on 80+ projects across 14 jurisdictions.

Our ADUs & homes are in hillside zones, coastal zones, historic districts, and wildfire areas. We routinely work with LADBS, LA County, LADWP, SCE, and planning agencies across Southern California. Complex residential projects are what we do, every day.

Get a custom home, or start with Otto’s architect-designed plans today!

Your new home

in 4 simple steps

1

Tailor your plan

Follow Otto’s custom design process, or pick one of our permit-ready plans and personalize it with our curated finish options.

1

Tailor your plan

Follow Otto’s custom design process, or pick one of our permit-ready plans and personalize it with our curated finish options.

2

We get permits

We manage all paperwork, engineering, and city coordination. You get the permit without lifting a finger.

2

We get permits

We manage all paperwork, engineering, and city coordination. You get the permit without lifting a finger.

3

Watch it get built

Our cohesive team manages the build. No handoffs, no finger-pointing—just clear updates as your home takes shape.

3

Watch it get built

Our cohesive team manages the build. No handoffs, no finger-pointing—just clear updates as your home takes shape.

4

Move home!

Start making memories the moment you walk in. We stay available to ensure your transition is seamless.

4

Move home!

Start making memories the moment you walk in. We stay available to ensure your transition is seamless.

Want great design fast?

Start with our permit-ready architect-designed plans, then just pick your finishes & fixtures!
Floor plan of a house
Floor plan of a house
Modern white cottage with a steep roof and desert landscaping.
Modern white cottage with a steep roof and desert landscaping.

Exterior

Floor plan of a house

1F Plan

Floor plan of a house

2F Plan

Contemporary Jane’s Cottage

2 Bed, 2 Bath, 1,200 square feet

Starting at $12,000

Floor plan of a house
Floor plan of a house
Modern white cottage with a steep roof and desert landscaping.

Contemporary Jane’s Cottage

2 Bed, 2 Bath, 1,200 square feet

Starting at $12,000

Modern white cottage with a steep roof and desert landscaping.

Exterior

Floor plan of a house

1F Plan

Floor plan of a house

2F Plan

Floor plan of a house
Floor plan of a house
Modern white cottage with a steep roof and desert landscaping.
Modern white cottage with a steep roof and desert landscaping.

Exterior

Floor plan of a house

1F Plan

Floor plan of a house

2F Plan

Contemporary Jane’s Cottage

2 Bed, 2 Bath, 1,200 square feet

Starting at $12,000

Exterior

1F Plan

Spanish Revival

2 Bed, 2 Bath, 1,150 square feet

Starting at $10,000

Spanish Revival

2 Bed, 2 Bath, 1,150 square feet

Starting at $10,000

Exterior

1F Plan

Exterior

1F Plan

Spanish Revival

2 Bed, 2 Bath, 1,150 square feet

Starting at $10,000

Frequently asked questions

What parts of an Otto permit-ready plan can I tailor?

We offer plenty of architect-vetted finishes & fixtures to choose from, as well as opportunities to modify certain areas like built-in closets.

What fire resistant features are in Otto's projects?

We only use unvented roofs, Class A fire rated exterior assemblies and materials, and metal-clad windows and doors with tempered glass. See more features on each project page!

How long does like-for-like permitting take in Altadena?

In our experience, typical like-for-like fire rebuilds in Altadena take approximately 4-6 weeks.

How long does construction take?

Depending on the size of project, construction can take 8 to 14 months. Our construction process consists of 15 phases, each requiring their own level of trade expertise and city sign-offs. In the event that we encounter delays or changes to the scope of work, we'll keep you posted on how that will impact the overall project timeline. 

What our clients say

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“I am very impressed with the level of detail in the design and I’m so grateful we found you.”

Diana K.

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“I am very impressed with the level of detail in the design and I’m so grateful we found you.”

Diana K.

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“I am very impressed with the level of detail in the design and I’m so grateful we found you.”

Diana K.

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“Great experience working with Otto ... my ADU is even better than I imagined, and it was on budget and on time."

Emily B.

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“Great experience working with Otto ... my ADU is even better than I imagined, and it was on budget and on time."

Emily B.

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“Great experience working with Otto ... my ADU is even better than I imagined, and it was on budget and on time."

Emily B.

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"The Otto team was absolutely amazing! 10 out of 10! I have nothing but great things to say about the entire process."

Melissa D.

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"The Otto team was absolutely amazing! 10 out of 10! I have nothing but great things to say about the entire process."

Melissa D.

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"The Otto team was absolutely amazing! 10 out of 10! I have nothing but great things to say about the entire process."

Melissa D.