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At PAS Architects, we’re your trusted ADU architect in Southern California — offering custom ADU design that transforms compact spaces into high-performance living. Whether you’re building a garage conversion ADU, a JADU, or a detached accessory dwelling unit, our sustainable, permit-ready ADU plans are tailored for comfort, flexibility, and value. Designed to fit your site and budget without compromising on beauty or long-term performance.
Choosing the right ADU architect makes all the difference. At PAS Architects, we combine creativity, technical clarity, and a service-driven process to deliver custom ADUs, garage conversions, and JADUs that fit your life, your lot, and your goals.
| Feature | Description |
|---|---|
| Purpose-Driven Design | Every accessory dwelling unit we design is customized to your lifestyle, site, and long-term goals — maximizing comfort, function, and flexibility. |
| Seamless Custom ADU Integration | Whether it’s a detached ADU, JADU, or garage conversion ADU, we ensure every new space blends beautifully with your existing home. |
| Permit-Ready ADU Plans | Our ADU plans and floor house designs are code-compliant, city-ready, and designed to simplify submittals and avoid costly delays. |
| Sustainable & Future-Ready | We prioritize passive strategies, energy efficiency, and low-impact materials — building ADUs that are comfortable, durable, and future-conscious. |
| Full-Service ADU & JADU Support | From custom ADU design and JADU design to consultants and approvals, we provide full support at every stage of the process. |
Our service-driven process makes ADU development simpler, smarter, and more rewarding. Here’s how we take your ADU or JADU from idea to permit-ready with clarity and care
| Phase | Description |
|---|---|
| Discovery & Vision Setting | Every successful ADU project begins with listening. We assess your goals, property constraints, and zoning requirements to lay the groundwork for a strategic design. |
| Conceptual ADU Design | We explore creative layouts and custom ADU design solutions that maximize livability, rental potential, and alignment with your lifestyle. |
| Builder-Ready Drawings | Our ADU Architect prepares detailed, permit-ready ADU plans and floor house designs tailored for accurate pricing and city review. |
| Permit Coordination | We handle all submittals, corrections, and communication with city officials — whether it’s a garage conversion ADU, detached unit, or JADU. |
| Collaborative Design Support | Our ADU architect team stays involved throughout — ensuring design continuity and seamless support from concept to construction. |
| Client Assurance | With PAS Architects, you’re always informed and empowered — from first sketches to approvals and beyond. We’re with you every step of the way. |
From garage conversions to detached backyard units, we design every ADU type to fit your needs, your site, and your long-term goals. Explore which one is right for your property.
| ADU Type | Description |
|---|---|
| Detached Backyard ADUs | A standalone accessory dwelling unit that offers privacy and flexibility — ideal for rentals, guests, or multigenerational living. |
| Garage Conversion ADUs | Converts an existing garage into livable space. A cost-effective garage conversion ADU that maximizes existing square footage. |
| Above-Garage ADUs | Adds a second-story ADU above the garage, offering elevated views and smart layout options without expanding the home’s footprint. |
| Attached ADUs | Built as an extension of the main house. This attached ADU shares a wall but includes a private entrance and full amenities. |
| Junior ADUs (JADUs) | A compact JADU design (≤500 sq ft) created within the existing home — with its own entry and kitchenette. Ideal for flexible use or passive income. |
Let’s design an ADU that adds more life, value, and flexibility to your property.
| Question | Answer |
|---|---|
| Do I need an architect for my ADU project? | Yes — especially in California, where zoning, Title 24, and energy codes are strict. A licensed ADU architect ensures your unit is code-compliant, energy-efficient, and tailored to your property’s conditions. |
| What types of ADUs can you design? | We design all ADU types, including garage conversions, detached backyard ADUs, attached ADUs, and Junior ADUs (JADUs). Every project is customized to your site, goals, and budget. |
| How long does ADU design and permitting take? | Most ADUs take 4–8 weeks for design and 4–12 weeks for city permit approval. We manage the full process — from field measurements to permit-ready ADU plans. |
| Do you offer permit help for ADUs in Los Angeles County? | Absolutely. We work extensively in LA County and nearby cities. Our team manages all submittals, plan-check corrections, and approvals. Check the LA County ADU Planning Guide for current zoning rules. |
| How much do your ADU design services cost? | Our fees start at $5,950 for garage conversion ADUs. Detached ADUs and multi-unit designs are priced based on scope. Use our ADU Cost Calculator to get an instant estimate. |
| Can I build an ADU if my lot is small or irregular? | In many cases, yes. As experienced ADU architects, we analyze your site’s constraints and creatively maximize buildable area. Even small or sloped lots may qualify for a garage conversion ADU, JADU, or compact detached unit. |
| Do you help with contractors and construction? | Yes — while we are not builders, we support you throughout the construction phase. We help obtain accurate bids, coordinate with your contractor, and provide architectural oversight to ensure your ADU design is built as intended. |
If you’ve been searching for an ADU architect near me, you’re not alone. Many homeowners across Southern California — from Cerritos and Long Beach to Gardena, Downey, and surrounding areas — choose PAS Architects for our hands-on process, local zoning expertise, and sustainable design focus. We’re a licensed, full-service architecture firm deeply familiar with the permitting process and residential codes specific to each city. Having the right ADU architect near me means working with a team that understands both the technical and personal side of building backyard homes, garage conversions, and second units that add value and flexibility.
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