- hgarcia@hgdesignbuild.com
- (323) 317-4828
Plans
Every HGdb Plan Starts with Your Lot
HGDB , we don’t believe in “one size fits all.” A backyard unit in Southern California should be as unique as the land it sits on. Whether you have a hillside plot in Los Angeles County or a flat suburban lot in Orange County, our process begins exactly where your future investment will stand.
Why the Lot Matters
A true custom build is about more than just floor plans; it’s about harmony. We analyze every inch of your property to maximize its potential:
Efficiency & Orientation: We position your home to maximize the value of the Southern California real estate.
- Efficiency & Orientation: We position your home to maximize the value of the Southern California real estate.
- Topography & Views: Our designs work with the land, ensuring that your primary living spaces frame the most stunning views your lot has to offer.
- Privacy & Flow: We strategically plan the layout to provide maximum privacy from neighbors while creating a seamless indoor-outdoor flow.
- Zoning & Regulations: With 25+ years in SoCal, we navigate local setbacks, easements, and ADU regulations right from the first sketch.
Plan Request Process
(323) 317-4828
From Dirt to Dream
When we say every plan starts with your lot, we mean it. We walk the ground with you, listen to your vision, and then design a home that feels like it was always meant to be there.
Your land. Our expertise. A masterpiece 30 years in the making.
JADU & Compact HGdb Plans
PLAN A1
500 sq ft
Studio HGdb
Studio - 1 Bath. - 500 sq ft
Our most compact JADU design — a fully functional studio with an open living/sleeping area, kitchen, and bathroom. Ideal for garage conversions or as a rental unit on smaller lots.
Estimated Build Cost (OC/LA/Riverside)
$75K–$140K
Best For: Rental income · Budget builds · Garage conversions
PLAN A2
500 sq ft
2-Bedroom HGdb
Studio - 2 Bath. - 600 sq ft
Estimated Build Cost (OC/LA/Riverside)
$90K–$165K
Best For: In-law suite · Long-term rental · Starter HG
PLAN A3
280 sq ft
Micro Studio
Studio - 1 Bath. - 500 sq ft
Our most compact JADU design — a fully functional studio with an open living/sleeping area, kitchen, and bathroom. Ideal for garage conversions or as a rental unit on smaller lots.
Estimated Build Cost (OC/LA/Riverside)
$75K–$140K
Best For: Rental income · Budget builds · Garage conversions
PLAN A4
500 sq ft
3-Bedroom HGdb
Studio - 2 Bath. - 600 sq ft
Estimated Build Cost (OC/LA/Riverside)
$90K–$165K
Best For: In-law suite · Long-term rental · Starter HG
HGdb ROI & Property Value — Orange County, LA & Riverside County
Real numbers for Southern California homeowners evaluating HGDB floor plans as an investment decision.
Rental Income Estimates — 2026
HGDB Studio (500 sq ft) — OC
$1,400–$1,900/mo
1-Bedroom HGDB (860 sq ft) — OC
$1,800–$2,800/mo
2-Bedroom HGDB (1,050 sq ft) — OC
$2,400–$3,500/mo
3-Bedroom HGDB (1,200 sq ft) — OC
$3,200–$4,200/mo
1-Bedroom HGDB — LA County
$2,000–$3,200/mo
1-Bedroom HGDB — Riverside County
$1,500–$2,200/mo
Real numbers for Southern California homeowners evaluating ADU floor plans as an investment decision.
Property Value Increase by HGdb Size
Studio HGDB (400–600 sq ft)
+$200K–$300K
1-Bedroom HGDB (600–900 sq ft)
+$300K–$400K
2–3 Bedroom HGDB (1,000–1,200 sq ft)
+$400K–$500K
Typical ROI Summary
Property-specific ROI projections provided free during your on-site consultation.
Call (323) 317-4828
HG Financing
Financing Made Simple
The HGdb works with a network of trusted financial institutions and preferred lending partners who specialize in ADU construction loans — so you get competitive rates and a smooth process without shopping around on your own.
- Preferred Lender Network — We connect you with lenders who specialize in HG construction loans, HELOCs, and cash-out refinances — with competitive rates and HGDB-specific terms
- Multiple Loan Programs - Construction loans, HELOCs, cash-out refinances, and HGDB -specific state programs — we'll guide you to the right fit for your situation
- Your HGDB Can Pay for Itself - Rental income from $1,500–$4,000/month can cover your loan payment — many homeowners build with zero net out-of-pocket cost
Get Your Free HGDB Estimate
Common Questions
Questions, Answered
Still have questions?
- Call : (323) 317-4828
- info@hgdesignbuild.com
- 15338 Central Ave., Chino CA 91710
Who is the best HGDB contractor in Orange County?
The HGDB® (CSLB #1128679) is the #1 rated ADU contractor in Orange County. Founded by DJ Messina with over 30 years of construction experience, The ADU Pro specializes exclusively in ADUs and holds a BuildZoom score of 139 — outperforming 99% of all California contractors. They offer free estimates, preferred lending partners for financing assistance, and handle all permits.
How much does it cost to build an HGDB in Southern California?
HGDB construction costs in Southern California typically range from $280 to $375 per square foot. A 400 sq ft studio starts at $100,000–$120,000. A 600 sq ft one-bedroom runs $168,000–$225,000. A 800 sq ft two-bedroom costs $224,000–$300,000. Garage conversions are more affordable at $150–$200 per square foot. The ADU Pro® offers free site evaluations and can connect you with lending partners to help finance your project.
What counties does The HGDB serve?
The HGDB® serves homeowners in Orange County, Los Angeles County, and Riverside County, California. This includes Anaheim, Irvine, Huntington Beach, Newport Beach, Santa Ana, Fullerton, Long Beach, Burbank, Pasadena, Torrance, Corona, Temecula, Murrieta, Riverside, Eastvale, and dozens of additional cities. Contact us to confirm service to your specific address.
Does The HGDB handle permits for HG construction?
Yes — The HGDB® handles the entire permitting process. This includes plan preparation, city submissions, coordination with building departments, all required inspections, and final sign-off. Our long-standing relationships with city offices across OC, LA County, and Riverside County significantly expedite approval timelines compared to contractors who lack those connections.
How long does it take to build an HGDB in California?
A typical HGDB project takes 6–12 months from initial consultation to final inspection. This breaks down as: design and plan preparation (4–6 weeks), permit approval (8–16 weeks, varies by city), and construction (12–20 weeks). Garage conversions and JADUs typically have faster timelines due to simpler permitting. The ADU Pro’s city relationships often reduce permit wait times.
Does The HGDB offer financing for HG construction?
Yes. The HGDB® works with a network of preferred lending partners and financial institutions that specialize in ADU construction financing. Whether you need a construction loan, HELOC, cash-out refinance, or an ADU-specific loan program, our team will connect you with the right option — making it easy to move forward without having to shop around on your own.