ADU Construction in San Diego

Before you think about walls, rooms, finishes or the final look of the house, you need to know one thing:

Once the plans are ready and the permits are in place, the next step is turning those plans into an actual living space.

Fortune Design & Permits handles ADU construction in San Diego County, along with the design and permit work that comes before it. This keeps the project connected from the first property check through construction and final inspection.

If you are planning a Junior, Attached or Detached ADU, the first thing to understand is how the construction will fit into your existing property.

What Happens Prior to Construction?

Construction doesn’t commence on the first day,

A few other things should be done first, in the following order:

The design for the ADU should be created
Blueprints should undergo the permit process
City comments and corrections should be resolved
All requisite permissions should be granted before beginning

Fortune keeps these stages under one team, so the construction team can work from the plans and permit information already prepared for the project.

Which ADU Are You Building?

The construction approach depends partly on the type of ADU.

Junior ADU

A Junior ADU is built within the existing single-family home and can be up to 500 sq. ft. This type of project works with the existing structure rather than creating a separate building.

Attached ADU

An Attached ADU shares at least one wall with the main home. The construction has to work with the existing house and the proposed ADU layout.

Detached ADU

A Detached ADU is a separate building on the property. It can be considered when there is enough usable space on the lot for a separate structure.

The type you choose depends on your property, available space and the requirements that apply to your location.

From Empty Space to Finished ADU

An ADU construction project can be easier to understand when you break it into stages.

01 — Get the Site Ready

The property needs to be ready for the work planned.

Site conditions, access and other property-related requirements are part of the planning process.

02 — Start Construction

The approved plans become the guide for the construction work.

The work follows the design and the requirements connected to the project.

03 — Build the Main Structure

For a new detached ADU, construction involves building the separate structure.

For an attached or Junior ADU, the work is connected to the existing home.

04 — Complete the Interior

The ADU is built around the approved layout, including its living areas, kitchen and bathroom.

05 — Final Inspection

After the construction work is completed, the project moves toward final inspection.

How Big Can Your ADU Be?

Fortune offers ADU floor plans from 208 to 1,200 sq. ft., with one-, two- and three-bedroom options.

The plans are grouped into different size ranges:

200–500 sq. ft.

Small plans with studio and one bedroom choice.

500–800 sq. ft.

One- and two-bedroom layouts with kitchen and living space.

800–1,200 sq. ft.

Larger two- and three-bedroom options, including some two-storey plans.

The size of your ADU should be decided after checking the property and the requirements that apply to it.

What about a Garage Conversion?

You do not always need to build a completely new structure.

Fortune works on garage conversion projects and lists different options depending on what you want to create.

A garage can potentially become:

A Junior ADU
A full ADU
Habitable living space

The requirements are different for each option, so the property and proposed use need to be checked before construction begins.

Why Keep Construction With the Same Team?

An ADU project involves more than the physical construction.

The design needs to match the property. The permits need to match the plans. The construction needs to follow the approved project.

When different companies handle each part, the homeowner may end up coordinating between them.

Fortune keeps design, permits and construction together.

That means the same project moves through:

Property → Design → Permits → Construction → Final Inspection

This gives the homeowner one team to speak with throughout the project.

What If the City Requests Changes?

Fortune will manage the adjustments and correspondence throughout the permit processing phase. After receiving the necessary approvals, building can take place according to the confirmed plans.

You will not have to engage with the adjustments phase by yourself. It will be done by us

Its listed service areas include:

San Diego
Chula Vista
Carlsbad
Encinitas
Escondido
Oceanside
El Cajon
La Mesa
Poway
Santee
San Marcos
Coronado
Del Mar
National City
Lemon Grove
Imperial Beach
Solana Beach
Vista

The location of the property matters because local requirements can vary between jurisdictions.

Before You Start Your ADU Build

Keep these points in mind:

Know your property- Start by checking what the lot can support.

Choose the right type- Junior, Attached and Detached ADUs work differently.

Know the size- Pick a size after checking the property, not just because you like a particular plan.

Understand the permit stage- Plan review and corrections are part of getting the project ready.

Plan the whole project- think about design, permits and construction together.

Ready to Build Your ADU?

You do not have to figure out everything before contacting Fortune.

Start with your property and tell the team what you want to build.

If you are looking for ADU Construction in San Diego, Fortune Design & Permits can handle the project from feasibility and design through permits, construction and final inspection.

Frequently Asked Questions

1. Is it possible to hire Fortune for Building an ADU?

Yes, Fortune can build all types of buildings and grant permission.

2. What is the classification of ADUs built by Fortune?

Fortune produces junior and detached types of ADUs!

3. What is the size of ADUs built by Fortune?

Fortune has plans of constructing ADUs between 208sqft to 1200sqft.

4. Can Fortune turn a garage into an ADU?

Of Course, Fortune can make conversions from garage to ADUs and other living spaces.

5. Does Fortune control the process till the final check?

Absolutely, Fortune controls the process from the beginning to the final check!

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