ADU Builder Rancho Cucamonga

Beautiful ADUs in Rancho Cucamonga and Beyond

ADUs Designed Better. Built Smarter.

Why Choose LADU for ADUs in Rancho Cucamonga?

LADU is an architect-led ADU contractor serving local homes throughout California with fixed-price design, fast-tracked permitting, and a trusted network of licensed general contractors.

Our team guides you from feasibility to final inspection, and we provide clear communication, accurate budgeting, and a seamless path to construction so your residential project stays on schedule and on budget.

Local ADU Expertise

Local needs drive our process. The city allows detached accessory dwelling units (ADUs) up to 1,200 sq. ft. based on lot size, with 4-foot side and rear setbacks and a typical 60-day review for compliant plans.

We design to local standards and match your home's style. If you need help understanding any requirement or permit pathway, our team will outline each step and keep your plans compliant and build-ready.

Serving Rancho Cucamonga and Surrounding Areas

We provide complete ADU services in Rancho Cucamonga, California, and throughout the surrounding Inland Empire.

From feasibility assessments to final inspection, LADU oversees each stage to ensure your accessory dwelling unit is thoughtfully designed, properly built, and completed on schedule.

Our team streamlines the permitting and approval process in Rancho Cucamonga, offering expert guidance on local ADU requirements. With organized project management and transparent communication, we help your build progress smoothly from concept to completion.

Comprehensive ADU Services in Rancho Cucamonga

From concept to keys, our team manages every step. Our experience with ADUs across a range of residential properties means fewer surprises and a smoother build.

ADU Design

Our ADU Design Services in Rancho Cucamonga take your project from concept through permit-ready plans with precision and attention to detail.

We prepare clear, reviewer-friendly drawings, complete with accurate dimensions, elevations, sections, and Title 24 energy documentation, to ensure your submittal is ready for approval.

By understanding your lifestyle and property layout, we shape floor plans, storage solutions, and lighting design so your ADU feels functional, bright, and comfortable every day.

ADU Building Permits

LADU's ADU Building Permit Services streamline the permitting process in Rancho Cucamonga. We handle full submittal packages, track plan check responses, and coordinate with city departments to keep your project moving forward.

Our team manages utility sign-offs, structural coordination, Title 24 reports, and any plan check corrections so your ADU permit is approved efficiently and without unnecessary delays.

Permitting Unpermitted ADUs

If your property includes an unpermitted ADU or converted space, LADU's Permitting Unpermitted ADUs Services can help you bring it into compliance.

We document existing conditions, produce accurate as-built drawings, and develop a code-compliant plan to legalize the structure. When upgrades are required, our trusted construction partners can assist so your unit passes final inspection with confidence.

ADU Construction

Our ADU Construction Services in Rancho Cucamonga ensure your build is executed accurately from start to finish. We deliver fully detailed, constructible plans to vetted builders and remain available for on-site coordination throughout the process.

From foundation specifications to interior finishes, we make sure your contractor has everything needed to deliver a durable, high-quality ADU that meets design intent and city standards.

ADU Design Options in Rancho Cucamonga

Spanish Style ADU

With a Spanish-style ADU, you capture timeless curb appeal with stucco, clay tile accents, and arched details that harmonize with your main home.

This accessory dwelling unit option is tailored to local climate, crafted to feel like a natural extension of your property while meeting all applicable codes, and ideal for flexible living space or guest quarters.

Studio ADU

A studio ADU offers a compact, efficient layout that maximizes natural light, storage, and privacy, perfect for a home office, guest suite, or starter rental.

Our team optimizes every square foot so your ADU lives larger than its footprint and supports daily living needs with smart built-ins.

Cottage ADU

Warm finishes, pitched roofs, and porch-ready charm define a cottage ADU. We focus on comfort, energy performance, and practical construction details that make the unit durable and low-maintenance.

Great for long-term family use or as a welcoming rental, a cottage ADU is a smart choice.

2 Bedroom ADU

Designed for small families or multi-generational living, a 2 bedroom ADU separates sleeping areas from shared zones and can support accessible features. You'll gain additional space for everyday life while keeping utility runs and structural spans cost effective.

3 Bedroom ADU

The largest of our popular plans, a 3 bedroom ADU provides room to grow and a flexible plan for work, study, and entertaining. Thoughtful planning balances privacy with open gathering space to support comfortable residential living.

Garage ADU

Transform your underused garage into a code-compliant dwelling. A garage ADU is often the fastest, most budget-friendly way to add value. This option leverages existing structure, keeps utility routes short, and can be completed with minimal site disruption.

Junior ADU

A junior ADU (JADU) carves out living space within your existing home footprint, typically with a compact kitchen and independent entry. It's a strategic way to add income potential or a private suite while controlling construction costs.

Local ADU Guidelines

Rancho Cucamonga offers flexible ADU regulations, including:

• Size tiers based on lot area (800–1,200 sq. ft.)
• 4-foot side and rear setbacks
• Height limits of 16–18 feet
• Parking waivers near public transit
• No owner-occupancy requirements

On most residential lots, a detached ADU can be permitted by right if your submittal meets objective standards and every requirement is clearly addressed.

Our team prepares a thorough permit package covering plans, calcs, and forms so that reviews move quickly. We'll also advise on utility upgrades, fire separation, privacy, and any additional site constraints that affect layout, circulation, and outdoor space.

Why Rancho Cucamonga Trusts LADU for ADU Projects

Choosing LADU means gaining an architect-led team with deep ADU experience and a carefully curated builder network. Your dedicated project lead coordinates with your contractor to streamline construction, keep quality high, and resolve field questions quickly.

Our general approach emphasizes transparency and cost control, and we align the plan set with materials that are readily available to avoid delays.

• Licensed architects leading every step
• Fixed design pricing
• Fast submittals and responsive support
• Vetted builders with ADU experience
• Custom build options available

Ready To Build Your ADU?

Contact our ADU experts today for a free site visit and consultation. We'll help you plan, permit, and build an ADU that adds living space, supports potential rental income, and elevates your home's long-term value.

If you need guidance on scope, we can right-size the project, estimate construction phases, and outline options tailored to your property.

We're here to provide clear answers and practical choices, whether you're just starting or ready to break ground.

Let's map your next steps together: Call (213) 855-3334 or schedule your free site evaluation today.

Start Your ADU Project With LADU Today.