MORE SPACE.
One accountable design-build general contractor for custom ADUs, home additions, and architectural transformations—from plans and permits through final inspection.
Experience The H&A Standard
Watch how our in-house teams manage design, city engineering, and on-site residential execution with zero middleman handoffs.
What We Design & Build
High-value residential construction led by licensed builders, structural engineers, and dedicated project directors.
Accessory Dwelling Units (ADUs)
Detached backyard guest houses, multi-bedroom rental homes, and attached suites engineered for maximum ROI and multigenerational comfort.
Major Home Additions
Second-story expansions, primary master suites, and great room extensions engineered seamlessly into existing rooflines.
Complete Whole-Home Remodeling
Full interior reconfigurations, load-bearing wall removals, open-concept floor plans, and energy-efficient building envelope upgrades.
Custom New Construction
Bespoke modern architectural residences and custom luxury estates built from foundation engineering to bespoke finishes.
Custom Kitchen Remodels
Waterfall quartz islands, custom millwork, integrated appliances.
Spa Bathroom Suites
Curbless showers, freestanding soaking tubs, radiant heated tile.
Garage ADU Conversions
Convert 2-car garages into fully permitted rental suites.
Fire & Insurance Rebuilds
Insurance claims handling, structural restoration, rebuild expediting.
One General Contractor. No Middleman.
“Homeowners shouldn’t be handed from salesperson to outside draftsman to permit consultant to unpredictable subcontractors.”
At H&A My Design, you partner directly with one master licensed General Contractor and our integrated in-house team. Single-point accountability means direct cost control, faster city approvals, and zero finger-pointing.
Design & Space Planning
Custom 3D CAD modeling tailored to your lot boundaries, setbacks, and daylight exposure.
Plans & City Permits
Structural engineering, Title 24 energy calculations, and direct city department expediting.
5,000 Sq. Ft. Showroom Selections
Custom cabinetry, quartz countertops, and European fixtures chosen in one coordinated sitting.
Dedicated Master Construction
Precision framing, MEP trades, custom millwork, and daily jobsite management.
Your Property May Already Have Room For More
California ADU legislation makes adding square footage faster and more profitable. Explore the four distinct build paths:
Detached ADUs
Freestanding modern homes with separate utility tie-ins, private entries, and outdoor yards.
Attached ADUs
Direct residential additions sharing a wall while maintaining acoustic isolation and privacy.
Garage Conversions
The fastest route to an ADU. Reinforcing slabs, insulating, and converting 2-car garages into luxury suites.
Second-Story ADUs
Vertical over-garage dwellings preserving 100% of your existing ground garden and patio footprint.
The Oakwood Modern ADU
Vaulted architectural ceilings with custom quartz kitchen island and private cedar patio.
The Hillside Residence
Engineered on a terraced slope with floor-to-ceiling panoramic glass and private balcony.
The Culver Studio Suite
Transformed an aging 2-car garage into a sunlit rental dwelling generating high monthly return.
The Mid-Century Contemporary
Modern cedar-slat accent exterior with integrated solar panels and seamless pocket doors.
The Over-Garage Haven
Vertical expansion preserving the entire backyard with separate private exterior staircase.
The Multigenerational Estate
Full-scale independent residence built for aging parents with zero-step entry and luxury finishes.
Popular ADU Models We Build
Explore our pre-engineered architectural floor plans—designed for accelerated permitting, optimal space efficiency, and turnkey construction:
Studio Suite
Studio Bed1 Bath
High-yield backyard studio designed for rental income, aging parents, or an executive home office with designer kitchenette and bath.
Two-Bedroom Modern
2 Beds2 Baths
Dual private suites flanking a central open-concept kitchen and living room. Engineered for maximum rental returns and privacy.
Two-Bed + Flex
2+Flex Beds2 Baths
Complete residential dwelling featuring a dedicated home office/gym, gourmet island kitchen, laundry suite, and patio connections.
Multigen Grand Estate
3 Beds2.5 Baths
Maximum California ADU footprint. Three bedrooms, expansive great room, primary spa suite, high ceilings, and covered entertaining patio.
Every Southern California lot is unique. Utility tie-in distances, soil conditions, municipal setbacks, and showroom finish selections determine your true cost. H&A provides a guaranteed fixed proposal following your complimentary on-site audit.
Start Your ADU Process & Receive Your Blueprints Free*
Partner with H&A My Design for your qualifying ADU construction, and we credit 100% of your initial architectural blueprints, drafting, and Title 24 engineering packet back to your project.
*Applies to qualified turnkey design-build contracts in approved Southern California jurisdictions. Credited upon construction mobilization. Contact our office for full qualification details.
Featured Projects Built By H&A
Real projects, verified clients, and craftsmanship built to endure across Los Angeles and Ventura County.
5,000 Sq. Ft. One-Stop Design Center
Eliminate weeks of driving between dozens of tile yards, cabinet makers, and plumbing distributors across Los Angeles. Experience full-scale material slabs, custom vanities, and premium finishes in one curated showroom with our design directors.
Homeowner Experiences
Hear directly from Southern California clients who trusted H&A My Design with their custom homes, ADUs, and additions.
“H&A made the entire process transparent. Having one GC manage blueprints, city permits, and the build was night and day.”
“Their Canoga Park showroom made selecting our cabinets, quartz, and fixtures so easy. Finished right on schedule.”
“Converted our garage into a 2-bedroom rental. Flawless craftsmanship and leased immediately after final inspection.”
“Direct communication on jobsite gave us peace of mind. Highly recommended for major residential additions.”
“From 3D plans to final city sign-off, H&A handled everything. No surprise change orders, no stress.”
“Built a modern ADU for my parents. The accessibility and aesthetic details exceeded all our expectations.”
How We Work
A single, structured roadmap from initial spatial discovery through final city key handover.
Lot Feasibility & Spatial Audit
On-site lot survey, utility check, zoning analysis, and setback verification to confirm maximum allowable build dimensions.
3D CAD Architectural Modeling
Walk through photorealistic 3D interior and exterior renderings. Refine floor plans, ceiling heights, and finishes before permits.
Structural Plans & Energy Calculations
Full structural drafting, foundation engineering, and Title 24 energy packets prepared for plan check submittals.
Permit Expediting & Showroom Curation
We personally expedite city approvals while you specify cabinetry, stone, tile, and plumbing in our 5,000 sq. ft. showroom.
Master Construction & Inspections
Dedicated in-house framing, MEP trades, custom carpentry, and milestone city inspections passed at every stage.
Final Sign-Off & Key Handover
Certificate of occupancy, final quality punch list, key handover, and activation of your comprehensive warranty.
Serving Southern California
Licensed throughout Los Angeles & Ventura Counties. HQ Showroom at 6723 Variel Ave, Canoga Park, CA.
📍 Los Angeles
📍 San Fernando Valley
📍 Sherman Oaks
📍 Encino & Tarzana
📍 Woodland Hills
📍 Calabasas & Westlake
📍 Pasadena & Glendale
📍 Culver City & South Bay
📍 Santa Clarita Valley
📍 Ventura County
Essential Homeowner Questions
1. Can I build an ADU on my property?
Most residential properties in California are legally permitted for ADUs under state legislation (SB 9/AB 68). We perform a complimentary lot survey to verify setbacks, easements, and utility tie-in requirements.
2. How long does the permitting process take?
Permit review times vary by city (e.g. LADBS, LA County, Pasadena, Glendale), typically taking 6 to 14 weeks. Our in-house expediting team manages plan check reviews directly to avoid unnecessary delays.
3. Does H&A handle both design and permits?
Yes, 100%. We are a true turnkey design-build general contractor. We handle architectural CAD design, structural engineering calculations, Title 24 energy packets, and all city permit submittals.
4. How is construction pricing determined?
We don’t provide misleading square-foot menu prices. After surveying your lot and utility runs (sewer, electrical panel capacity, gas/water), we provide a fixed-scope proposal detailing materials, labor, and milestones.
5. How long does construction typically take?
Garage conversions typically take 3 to 5 months. Ground-up detached ADUs and major additions range from 5 to 8 months depending on size, terrain, and custom finish packages.
MORE SPACE.
MORE VALUE.
Design, permits, showroom selections, and master construction—managed by one accountable team.