San Diego ADU planning guide from first idea to buildable scope

Envision a remodel that looks high end because the fundamentals were planned: circulation, light, and materials chosen for how they age over time.

This San Diego guide is written from a designer perspective. The goal is to help you make confident decisions before construction starts, so your remodel feels calm, functional, and built to last. Cali Dream Construction is a design build general contractor serving San Diego County with a focus on kitchens, bathrooms, ADUs, and whole home remodeling.

Designer lens

One lens that keeps decisions consistent is a family friendly layout that stays refined. When a remodel feels cohesive, it is usually because one guiding idea was used for layout, materials, and details.

What this guide covers

How to compare bids fairly
What documents and selections prevent surprises
How permitting and inspections affect planning
How to move from ideas to a buildable scope
What good project communication looks like

The ADU design decision that usually matters most

ADUs feel high quality when entry, storage, light, and privacy are designed intentionally. A simple palette and efficient plan often outperform complicated ideas.

Design first decisions

Define scope in writing, not just in conversation
Confirm what is included and excluded before signing
Choose a communication cadence that keeps things calm
Plan a decision schedule so choices are made early
Set allowances that match your taste level

Common mistakes and how to avoid them

Comparing bids with different scopes and assumptions
Ignoring site protection and daily cleanup expectations
Signing without understanding allowances and change order rules
Starting without a clear plan for inspections and access
Not confirming who is ordering materials and when

Worksheet you can copy into your notes

This worksheet is simple on purpose. Fill it in before you request bids so you can compare proposals on the same scope.

Write your preferred communication method and frequency
Write the one risk you want your contractor to plan for
List any site constraints: parking, pets, work from home
Write the scope in one sentence
List your top three selection categories to decide early

San Diego specific planning note

In San Diego, permitting and inspections depend on scope and jurisdiction. Planning for those steps early keeps the schedule predictable.

Budget and timeline note

Process is what protects both budget and schedule. A clear scope, a clear communication cadence, and early selections reduce the most common causes of delays.

If you want numbers for your specific home, the best next step is a walkthrough so we can measure, discuss scope, and identify constraints.

Permits and inspections in San Diego

Permitting depends on scope and on the authority having jurisdiction. In San Diego County, many projects are reviewed by the City of San Diego Development Services or by County of San Diego Planning and Development Services, but some cities have their own building departments.

Common triggers include changes to plumbing, electrical, structure, openings, or creating new dwelling space. We discuss permit needs early so inspections do not surprise the schedule.

How Cali Dream Construction runs a design forward project

A smooth remodel is mostly planning. We focus on clarity: scope, decisions, and sequencing.

Walkthrough and measurement
Selections and specifications
Closeout and a punch list that gets finished
Ordering plan for long lead items
Construction with communication checkpoints
Layout options and a clear design direction
Buildable scope with allowances where needed

Get a design forward plan and a buildable scope

Want to see options, not pressure? Set up a design meeting with Cali Dream Construction and we will map the next steps.

Tell us your goals, timeline, and what you are trying to solve. We will recommend the clearest path from concept to construction.

Request a consultation

Frequently asked questions

How do I start planning without getting overwhelmed?

Start with the problem you are trying to solve, then choose one guiding design direction. A walkthrough and a measurement based plan turn inspiration into a buildable scope.

Do I need permits for this type of work?

If the work changes plumbing, electrical, structure, or creates new dwelling space, permits are commonly required. The exact requirement depends on scope and jurisdiction, so we verify early.

How do I keep the design from feeling dated?

Use timeless fundamentals: good proportions, a calm base palette, and strong lighting. Add personality through elements that can be updated later.

What makes an ADU feel like a real home?

A clear entry moment, smart storage, good light, and a cohesive material palette repeated across the unit.

What design choice helps an ADU rent well?

Durable finishes, privacy, and a complete kitchen and bathroom. Good lighting and storage also matter more than most people expect.

Helpful resources and references

These references are useful for learning about standards, permits, and product guidance.

Image ideas and alt text for your page

Use these prompts for photography briefs or concept imagery, then apply the matching alt text for accessibility and SEO.

Image prompts

Hero image prompt: bright San Diego home interior illustrating the topic, calm palette, natural light, editorial photography
Detail image prompt: close up of materials and hardware, texture focused, soft shadows, design magazine style
Planning image prompt: designer sketch with sample board and plan set, clean workspace, natural light

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Design planning session for a San Diego home remodel

Educational note

This page is for homeowner education and design planning. Requirements can vary by scope and jurisdiction. Always verify details with your local building department and your project team.

Related San Diego remodeling guides

These related guides can help you connect decisions across your project.