If you’re a homeowner in Monrovia thinking about adding an ADU to your property, you’re in good hands with Potato Construction. Patrick’s team has completed multiple ADU projects throughout the San Gabriel Valley, and Monrovia stands out as one of our strongest and most active markets. We know the streets, the neighborhoods, and the city’s permitting process — and we’re ready to bring that local experience to your backyard.
What Is an ADU and Why Monrovia Homeowners Are Building Them
An accessory dwelling unit (ADU) is a secondary home built on the same lot as your primary residence. Across Monrovia, more and more families are choosing to build ADUs — and for good reason.
- Multigenerational living. Monrovia has a strong culture of family. Many of our clients build ADUs so aging parents can live close by — not in the same house, but just steps away. It’s privacy and proximity at the same time.
- Rental income of $1,800–$2,500/month. Monrovia’s location — close to the 210 freeway, the Gold Line, and major employers in Pasadena and Arcadia — makes it a desirable rental market. A well-built ADU can generate real monthly income that offsets your mortgage or supplements your retirement.
- Increased property value. Adding a permitted ADU typically adds significant resale value to your home. Buyers increasingly look for properties with income potential or space for extended family.
Monrovia ADU Rules
Monrovia follows California state ADU law, which gives homeowners strong rights to build. Here’s what you need to know:
- Maximum size: Up to 1,200 square feet for a detached ADU
- Setbacks: Minimum 4 feet from the rear and side property lines
- Height limit: Up to 16 feet for a detached ADU
- Parking: Zero to one parking space required, depending on proximity to transit
- Number of ADUs: Up to 2 per single-family lot (one detached ADU plus one junior ADU)
The Permit Process in Monrovia
We walk every client through the full permit process from start to finish. Here’s what to expect when you build with Potato Construction in Monrovia:
- Free site evaluation. We visit your property, review your lot size, setbacks, and utility access, and help you understand what’s buildable. There’s no cost and no obligation.
- Plans and design. Our design team creates architectural plans tailored to your lot and your goals.
- Plan check (4–8 weeks). We submit your plans to the City of Monrovia for review and handle all back-and-forth with the building department on your behalf.
- Construction (4–6 months). Once permits are approved, our crew gets to work — foundation, framing, MEP, drywall, finishes — with consistent communication throughout.
- Final inspection and sign-off. We coordinate the final city inspection and make sure everything is signed off properly so your ADU is fully permitted and legal.
What Does an ADU Cost in Monrovia?
| Item | Estimated Cost |
|---|---|
| Design and permits | $15,000 – $30,000 |
| Foundation and framing | $60,000 – $90,000 |
| Electrical, plumbing, HVAC | $40,000 – $60,000 |
| Finishes (flooring, cabinets, fixtures) | $30,000 – $60,000 |
| Total (800–1,000 sq ft) | $180,000 – $250,000 |
We provide detailed, itemized quotes — no vague ranges, no surprise add-ons after you sign. What we quote is what we build to.
Why Families in Monrovia Choose Us
Patrick’s team doesn’t just work in Monrovia occasionally — it’s one of our most active markets in the entire San Gabriel Valley. We’ve completed multiple ADU projects in the city, and our crews are familiar with local building inspectors, site conditions, and the neighborhoods themselves.
- Deep local knowledge. We’ve built in Monrovia. We know which streets have easement quirks, where soil conditions get tricky, and how to work efficiently with the city’s building department.
- Bilingual Chinese and English team. Patrick’s team is fully bilingual. Many of our Monrovia clients communicate with us in Mandarin or Cantonese — we make the process easy and comfortable from day one.
- Full-service, in-house construction. From design to final inspection, everything is managed under one roof.
- Transparent pricing. No bait-and-switch. We give honest quotes and stand behind them.
Ready to Build Your Monrovia ADU?
Call or text Patrick’s team at (626) 777-6666 to schedule your free consultation. We’re based in Rosemead and serve all of Monrovia and the surrounding San Gabriel Valley communities. We also offer free consultations at select 99 Ranch Market locations.
Potato Construction serves Monrovia, Arcadia, Temple City, Alhambra, Monterey Park, Rosemead, and surrounding SGV communities. (626) 777-6666
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