Goals, setbacks, access, trees, utilities, and budget
Why add an ADU in Riverside?
You’re adding more than square footage. You’re creating options. An ADU can house family members with privacy, generate reliable long-term rental income, or become a quiet studio or office you actually use. We design your unit to match your home’s style and the way you live, so it feels integrated, not tacked on.
Great use cases
- Multigenerational living with a separate entry
- Long-term rental for steady income
- Guest suite or creative studio with storage and laundry
- Care suite with accessibility features
Local know-how that keeps projects smooth
Riverside lots vary: deep backyards in Arlington Heights, smaller urban parcels in Magnolia Center, and hillside conditions near Canyon Crest. After nearly two decades building across the Inland Empire, we know how to plan for setbacks, utilities, and inspections so your schedule stays predictable.
Neighborhoods we frequently serve: Canyon Crest, Orangecrest, La Sierra, Magnolia Center, Wood Streets, Mission Grove, Arlington Heights, and nearby areas.
What we build
- Detached ADUs (backyard cottages 400–1,200 sq ft)
- Attached ADUs that share a wall and simplify utilities
- Garage conversions with proper structural upgrades and insulation
- Over-garage suites with private entries and sound control
A process you can trust
01
Discovery & Site Visit
02
Scope & Design Assist
Plans, engineering, value options, and clear allowances.
03
Permits & Approvals
Submittals, comments, and inspections coordinated for you.
04
Build & Protect
Organized schedule, tidy site, and proactive updates.
05
Handover & Warranty
Final inspections, documentation, and maintenance guidance.
Design that lives well
Smart floor plans make compact spaces feel generous through clear sightlines, smart storage solutions, and flexible multi-use zones. We specify durable finishes such as LVP or tile flooring, quartz surfaces, and quality fixtures that look great and hold up well, making them ideal for rentals or frequent guests.
Exterior designs reflect your home’s rooflines, materials, and color palette to enhance curb appeal and support long-term appraisal value.
Most Common Questions
Frequently asked questions
Most lots support 400–1,200 sq ft, but setbacks, coverage, and utilities matter. We confirm what fits your property during feasibility.
Yes. We prepare plans, submit to the City of Riverside, address comments, and manage inspections through final sign-off.
Long-term rentals are common. We’ll align your plan with current local rules and discuss utility metering considerations.
Detached, attached, garage conversions, and over-garage suites, each designed to complement your home instead of looking like an add-on.
Yes. Rooflines, siding/stucco, trim, and color are coordinated for a seamless look.
Often. Slab moisture or leveling, insulation, fire separation, egress, and seismic details may need attention. We include all required work in the scope to avoid surprises..
We maintain a clean, organized site with defined work hours and weekly updates. Neighbors appreciate it and so will you.
We assess capacity, plan tie-ins, and coordinate upgrades for electrical, water, sewer, and gas.
We have optimized templates for speed and value, and we also do fully custom layouts to fit unique lots.
A written workmanship warranty plus manufacturer coverage; we review maintenance at handover.
Ready to explore your ADU?
Book a quick call. We’ll review goals, property details, and city requirements and outline the smartest path to get it built right.
GENERAL CONTRACTOR 1021480
Your vision, our craftsmanship
Quick Links
© Copyright 2025 Joshua J. Phillips Construction | Designed by- Home Builder Marketers