Build Your ADU Faster and For Less
Factory-built ADUs that save you time and money.
Prefab ADU Los Angeles
Create a Beautiful ADU With LADU. Architect-Led ADU Experts.
A prefab ADU is an accessory dwelling unit built off-site in a controlled factory environment and then delivered and installed on a property. Benefits include faster construction timelines, predictable pricing, reduced material waste, and consistent build quality.
Prefab ADUs also minimize on-site disruption while offering modern, efficient designs that meet local building and zoning requirements.
LADU is the architect-led team Los Angeles homeowners trust for prefab ADU homes that pass plan check, install faster, and add lasting value.
ADUs Designed Better. Built Smarter.
Los Angeles Prefab ADU = Faster Completion With Predictable Costs
Get into a backyard ADU prefab faster with flat-fee design, code-ready plans, and a coordinated handoff to licensed prefab partners. One team. One contract. One goal.
Speed and Simplicity
- Factory building shrinks on‑site work to weeks, not months.
- Standardized models and spec sheets cut guesswork and reduce delays.
- Pre‑approved or pre‑engineered plans speed plan check and inspections.
- Fewer weather and labor holdups than stick‑built projects.
Predictable Budget
Our flat‑fee design package covers feasibility, architecture, and permitting. Scope and allowances are defined early, so prefab ADU Los Angeles cost is modeled before you sign.
No design change orders. You can count on clear line items for the unit, foundation, hookups, permits, and installation.
ADUs Designed for Los Angeles Codes
LADU designs to LAMC 12.22.A.33 and California Gov Code. Typical standards include 4‑foot side and rear setbacks, height allowances of 16–25 feet based on zone and location, and ministerial approval for an 800 sq. ft. "statewide exemption" unit that meets basic limits.
Units under 750 sq. ft. avoid impact fees. Parking waivers apply near transit and for garage conversions.
Livable Floor Plans
All floor plans are designed to be livable and functional, with a focus on space efficiency and natural light.
Floor Plan 1
Floor Plan 2
How It Works
Our prefab ADU process is designed to be simple and stress-free. Here's how we bring your ADU from concept to completion:
1. Factory Manufacturing
Your ADU components are precision-built at our partner's manufacturing facility. This controlled environment ensures consistent quality while dramatically reducing build time.
2. Delivery to Your Site
Once manufacturing is complete, the prefab ADU components are transported directly to your property, ready for assembly.
3. Professional Assembly
A licensed contractor assembles the components on-site, connects utilities, and completes all finishing work. The result? A beautiful, fully-functional ADU in a fraction of the time.
Make It Your Own
Just because it's modular doesn't mean it's cookie-cutter. We offer customization options so your ADU reflects your style and meets your needs:
- Fixtures — Choose from a curated selection of faucets, lighting, and hardware.
- Appliances — Select the kitchen and laundry appliances that fit your lifestyle.
- Exterior finishes — Pick colors, siding materials, and details that complement your main home.
Why ADU Prefab Homes are Ideal in Los Angeles
A Los Angeles prefab ADU can add rental income, space for family, and real property value. Factory timelines finish 30%–40% faster than stick‑built in many cases.
ADU Rental Income and Flexibility
- Long‑term rental or housing for extended family
- Guest house for visitors or caregivers
- Private office or studio
Modern prefab ADU layouts maximize livability with smart storage, full kitchens, and plenty of daylight. Choose studio, 1‑bedroom, or 2‑bedroom ADU prefab homes in a range of styles.
Faster Approvals
Standardized drawings and specs speed plan check. LADU's permit team handles submittals, corrections, clearances, and final sign‑off so your Los Angeles prefab ADU stays on schedule.
Permits, Site Prep, and Utilities for an ADU Prefab
Technical steps can derail timelines. LADU's architect‑led planning and licensed prefab partners help prevent surprises from day one.
Permitting and Compliance
We lead zoning checks, LA plan checks, and utility reviews. We flag any Rent Stabilization Ordinance issues before design. Prefab ADU homes are engineered to meet California building standards and LAMC requirements.
Site Prep and Foundation
We study grading, drainage, trench paths, and root zones. Foundations may be slab, pier, or stem wall, matched to soil and manufacturer specs. Crane reach, set location, and overhead clearances are verified early to avoid re‑mobilization.
Utility Connections and Costs
We run water, sewer, and electric capacity checks and map routes. Tie‑ins to the main house keep costs lower; separate meters can be added if you prefer independent billing. Common add‑ons include trenching, panel upgrades, and sewer laterals.
Delivery and Access Planning
We review street width, turning radius, and powerline clearances with the delivery team. Staging and set sequence are scheduled with neighbors and the city so that delivery day runs smoothly.
Prefab ADU Homes vs. Custom Tradeoffs
- ADU prefab Los Angeles models often come 10%–20% cheaper and install faster.
- With prefab, floor plan changes and finish options are curated, not unlimited.
- Custom builds fit tricky lots and bespoke design but add time and cost.
Finding the Best Prefab ADU in Los Angeles
We help you compare models, factories, and specs to select the best prefab ADU Los Angeles option for your site, budget, and timeline.
Our architect‑led reviews focus on access, hookups, energy code, and finish durability so you end up with the best prefab ADU for long‑term use. If you're scanning ADU prefab Los Angeles catalogs, we will shortlist the right manufacturers and confirm fit before you commit.
Why Choose LADU for Prefab ADU Los Angeles Builds
Work with licensed architects who speak Los Angeles code. We handle feasibility, design, and permitting and then arrange construction with vetted prefab partners through one contract.
From first site visit to final inspection, you get a clear path and a single point of contact.
- Architecture‑Led ADU experts in LA.
- Flat fee design with no change orders for design.
- Designed for California codes for faster approvals.
- One team. One contract. One goal.
- We make building an ADU simple.
- Construction arranged through licensed prefab partners.
- Local permit expertise across Los Angeles neighborhoods.
Ready to plan your prefab ADU in Los Angeles?
Call (213) 855-3334 or contact us online today for a free site assessment and a fixed-price design quote.
ADUs Designed Better. Built Smarter.
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Frequently Asked Questions About Backyard ADU Prefab Units
What does a prefab ADU cost in Los Angeles?
Most projects land at $150,000–$300,000+, based on size, finishes, site work, and utilities. The budget covers the prefab unit, foundation, hookups, permits, and installation.
LADU provides a flat‑fee design package and a clear estimate of costs before you commit. If you are comparing quotes, ask for a detailed prefab ADU cost breakdown that lists site work and utility work in writing.
How long does a prefab ADU take?
Plan on 6–9 months from consultation to move‑in. Factory build often runs 4–12 weeks. Site prep, delivery, hookups, and inspections add several weeks. LADU's phased roadmap keeps approvals and installation on track.
Is prefab ADU cheaper than custom?
Often yes. Prefab can be 10%–20% less than comparable stick‑built units and finish 30%–40% faster. Savings vary with site conditions, utility distances, and finish choices. We compare both paths on your lot so you pick the best value.
Do prefab ADUs meet Los Angeles codes?
Yes. Prefab ADUs must comply with LAMC 12.22.A.33 and California building standards. LADU prepares permit‑ready plans and coordinates with approved manufacturers so your ADU prefab home is legal for long‑term use.
What size prefab ADU can I build?
Studios to two‑bedroom units are common at 320–1,200 sq. ft. Units under 750 sq. ft. avoid impact fees. The 800 sq. ft. statewide exemption can streamline reviews. LADU confirms what fits your lot and goals.
How does LADU handle permitting for prefab ADUs in Los Angeles?
LADU manages permitting end‑to‑end, including zoning checks, LA plan check, and utility reviews. Designs follow LAMC 12.22.A.33 and California standards. We pursue ministerial approval, leverage the 800 sq. ft. statewide exemption when eligible, and note that units under 750 sq. ft. avoid impact fees. We handle submittals, corrections, clearances, and sign‑off.
What site prep and access considerations affect prefab ADU installation?
Successful installs start with careful site studies, considering grading, drainage, trench routes, and protected root zones. Foundations are matched to soils and manufacturer specs. We verify crane reach, set location, and overhead clearances and then plan delivery logistics, including street width, turning radius, powerline conflicts, staging, and coordination.
How are utilities handled, and can I use separate meters?
LADU performs water, sewer, and electrical capacity checks, then maps efficient routes. Most projects tie into the main house for lower costs, though separate meters are available for independent billing. Budget for common add‑ons such as trenching, panel upgrades, and sewer laterals, which depend on distances, soil conditions, and access.
Is prefab or custom better for my Los Angeles ADU?
Prefab suits most backyards seeking speed and value and is often 10%–20% cheaper and faster to install. The tradeoffs include curated floor plans and finish packages and limited customization. Custom builds fit challenging lots or bespoke architecture but add time and cost. LADU evaluates both paths during feasibility, aligning design, budget, and LA code.
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