

San Diego’s Dedicated ADU Design-Build Experts
From backyard tiny homes to luxury garage conversions, we handle the permits, design, and construction so you can maximize your property’s value.
✔ Bonus ADU Strategy: We help you navigate San Diego’s density bonus programs.
✔ Turnkey Permitting: We handle the City of San Diego & County permit hurdles for you.
✔ Fixed-Price Feasibility: Know exactly what you can build before you break ground.


The H&M Path to Build: Your San Diego ADU Journey
Step 1: Site Feasibility & Zoning Audit
Before you invest in expensive blueprints, we verify exactly what your property allows. Our deep dive into San Diego’s local municipal codes includes:
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Zoning & Setback Analysis: Identifying the precise "buildable envelope" of your lot.
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Utility Infrastructure Check: Assessing sewer, water, and electrical capacity for the new unit.
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Easement Verification: Ensuring no hidden underground lines or city rights-of-way will stall your project.
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Bonus ADU Strategy: Determining if your lot qualifies for density bonuses to maximize your build.
Step 2: ADU Architecture & Engineering
We don't just design a "backyard house"; we design an asset. Our architectural process focuses on:
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ROI-Driven Design: Optimizing layouts to command maximum rental income or provide luxury "Aging in Place" comfort.
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City-Approved Engineering: Structural plans designed to sail through San Diego and County permitting departments.
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Fixed-Price Planning: We align the design with your budget early, so construction costs don't come as a surprise later.
Step 3: Full-Service Construction
Once permits are in hand, our team takes over the heavy lifting.
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The Homeowner Portal: Follow every milestone through Buildertrend, with real-time photo updates and daily logs.
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Project Management: We handle all city inspections and subcontractor coordination.
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Turnkey Delivery: From the first shovel in the ground to the final certificate of occupancy.
Project Timeline Transparency⏱
Average Project Duration: 6–10 Months
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Months 1-3: Design, Feasibility, and Permit Submission.
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Months 3-5: City Plan Review & Permit Issuance.
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Months 5-10: Site Preparation and Full Construction.
Services
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Detached ADUs (Grandparent Flats).
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Junior ADUs (JADUs) & Garage Conversions.
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Multi-family ADU additions.
H&M Building Services LLC specializes in ADUs throughout San Diego. From feasibility and zoning review to design, permits, and construction, we manage the entire ADU process using a proven 3-step approach that reduces risk and improves pricing accuracy.


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