The San Diego ADU Planning Guide
Unleash the potential of your property with our expert services. Discover how to maximize space and value through innovative design and construction solutions tailored to your needs. Our team at H&M Building Services LLC is dedicated to bringing your vision to life. Contact us today to explore the possibilities.
By H&M Building Services LLCLicensed ADU Builder | CSLB #1034196
👉 Download the free guide and get clarity before you build
What You Can Build, What It Costs, and How to Avoid Expensive Mistakes
🔍 Thinking About Building an ADU in San Diego?
You’re not alone. but most homeowners start their ADU project with bad information, unrealistic budgets, or the wrong sequence.
This free guide was created to help you:
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Understand what you can legally build
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Learn real ADU costs in San Diego
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Avoid common mistakes that cause delays and cost overruns
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See the exact process successful ADU projects follow
📘 WHAT’S INSIDE THE FREE ADU GUIDE
✔ San Diego ADU zoning & permit basics
✔ Realistic ADU cost ranges (design, permits, construction)
✔ Timeline expectations from start to finish
✔ The 3-Step ADU System used by successful projects
✔ A checklist to see if your property is a good candidate
This guide is designed for homeowners who want real answers, not fluff.
Most ADU projects that go over budget don’t fail during construction,
they fail before construction ever starts.
Common mistakes include:
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Designing before feasibility
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Guessing permit & City fees
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Locking construction pricing too early
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Hiring teams unfamiliar with San Diego ADU rules
This guide helps you avoid all of that.
🔑 THE PROBLEM WITH MOST ADU PROJECTS
🧭 HOW SUCCESSFUL ADU PROJECTS ACTUALLY WORK
Inside the guide, we break down H&M’s proven 3-Step ADU System:
STEP 1 – Assessment & Feasibility
Confirm what can be built before investing in plans.
STEP 2 – Design, Engineering & Permits
Turn feasibility into City-approved plans.
STEP 3 – Construction
Build exactly what was approved, no guessing.
This system protects homeowners and prevents expensive surprises.
💰 REAL COST EXPECTATIONS (WHY THIS GUIDE MATTERS)
If you’re researching ADUs, you deserve honesty.
Inside the guide, you’ll see:
- Why most 800 SF ADUs land between $260k–$300k
- How design, City fees, and construction stack together.
- What affects cost (and what doesn’t)?
If a quote sounds too good to be true, this guide explains why.
BEFORE
AFTER
✅ WHO THIS GUIDE IS FOR
This guide is ideal if you:
✔ Own property in San Diego
✔ Are considering an ADU or rental unit
✔ Want realistic pricing & timelines
✔ Don’t want surprises halfway through the project
If that sounds like you, this guide will save you time, money, and stress.
🚀 WANT PROPERTY-SPECIFIC ANSWERS?
This guide gives general information, but every property is different.
If you want to know:
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What your lot can support
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What constraints (if any) apply
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What your next step should be
👉 Schedule a Free ADU Strategy Call
We’ll review your property and explain your options before you commit.