Every possibility starts here.
We start with your property, the existing home and the way you want to use the new space. Access, privacy, utilities and the site itself help shape the conversation.
Property & purpose
ADUs · Carlsbad & North County
A little more space.
A whole new possibility.
Create room for family, guests or a different chapter of life. We help you explore an accessory dwelling unit around your property, your priorities and a clear design-to-build plan.
2008Established in Carlsbad
18Years as one company
20+Years of experience
Scroll to see the possibilities
From a plan.
To a place to call home.
Watch an ADU take shape, from the first idea to the finishing touches. Scroll through the transformation or choose a stage below.
TNT / A home taking shape01 / 06
DESIGN VISUALIZATION
The lot
Photorealistic design visualization, not project photography. Construction stages may overlap; your design and schedule are project-specific.
See the space before it exists.
Architectural planning connects the footprint, layout and relationship to your main home. Review the design, engineering needs and permit preparation with TNT and SQFT Creation.
Design & approvals
A considered beginning.
With the required plans and approvals in place, site preparation and foundation work establish the base for the build. The details depend on your property and design.
Site preparation & foundation
Your vision takes shape.
Walls rise and the layout becomes a space you can understand. Framing defines the openings, the roof structure and the connection between the rooms.
Structure & spatial definition
A space becomes a home.
The roof, exterior, windows and doors bring the building together. Utilities, insulation and interior work are coordinated through the construction sequence.
Enclosure & coordinated systems
Room for your next chapter.
Materials, fixtures and final details bring the design to life. Walk through the work with the team as the project moves through completion and required inspections.
Finishes & completion
ADUs, thoughtfully planned
Start with your property. Build around your purpose.
Good design connects how a space looks with how it works. Start with the decisions that matter to you.
Detached ADUs
Explore a separate living space with its own entrance and a layout suited to your goals. Site access, outdoor space and utility connections are part of the early conversation.
Attached living spaces
Consider an ADU connected to the main home. Privacy, circulation and the relationship between old and new spaces guide the design discussion.
Garage conversions
Assess whether an existing garage can support the living space you have in mind. Structure, floor levels, utilities and existing conditions need careful review.
Feasibility & planning
Connect architectural plans, engineering needs and permit preparation with SQFT Creation. The appropriate design and approvals depend on your property and local requirements.
The work behind the words
Small spaces. Real possibilities.
Explore living spaces and details from the Guerrero, Lesher, Williams, Lockhart and Tol project folders. Furnishings are virtually staged; the underlying project details are preserved.
The Lesher living space
Project interior · Virtually staged
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The Williams kitchen
Project detail · Virtually staged
View full photograph ↗︎
The Lockhart bathroom
Project detail · Virtually staged
View full photograph ↗︎
The Tol exterior
Expanded living · Virtually staged
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Completed project photographs have been lighting-corrected and virtually staged. Furnishings and decorative elements may be digitally added. See the portfolio for project context and available before photographs.
Behind the finished space
The work along the way.
Construction photographs from separate TNT projects show the work behind expanded living spaces. These are progress examples, not a single project timeline.
TNT + SQFT Creation
See the future.
Then build it.
Connect architectural planning, engineering needs, material selections and 3D visualization before construction begins. Better decisions start with a plan you can understand.
Our method
A clear path.
From day one.
Discover
Your goals, home and priorities.
Plan
Scope, feasibility and budget.
Design
Layouts, materials and visualization.
Permit
Required plans and approvals.
Build
Construction with clear communication.
Complete
Walkthrough and final details.
Accountability, built in
Confidence before
construction begins.
Per day. In your corner.
For labor-related delays beyond your contracted completion date.
See it before
we build it.
Explore plans, selections and visualization so the next step feels clearer.
One accountable
team.
Planning, design and construction coordinated around your home and priorities.
The $500-per-day guarantee applies to labor-related delays beyond the contracted completion date. Excludes city delays, acts of God, missing parts and warranty parts. Subject to your contract terms.
Before you begin
Good questions.
A clearer next step.
How do I know which ADU is right for my property?
Start with a feasibility conversation about the lot, existing structures, access, utilities and intended use. A detached unit, an attached space or a garage conversion may present different opportunities.
Can you coordinate the design and the build?
TNT coordinates the construction plan with architectural planning and design through SQFT Creation. Together, the plans, engineering needs, selections and permit preparation help define the work before the build.
What affects the cost of an ADU?
Size, site conditions, utility work, the existing structure and finish selections all matter. We develop a project-specific scope rather than treating a square-foot starting price as a complete project cost.
How long does an ADU project take?
Planning, plan review, site work and construction each contribute to the schedule. We discuss these stages for your property and distinguish the construction plan from approvals and other outside dependencies.
Can an ADU serve family now and a different use later?
Tell us how you hope to use the space over time. We can explore privacy, storage and flexible layouts, while the permitted use and any rental requirements need to be checked for your property.
Hear from homeowners
Let our clients tell the story.
Read homeowner experiences on Google and Yelp.
Rooted here. Building here.
ADUs across
North County & San Diego.
Based in Carlsbad, we work with homeowners across coastal and inland communities. Tell us where your project is and what you would love to change.
CarlsbadOceansideEncinitasDel MarSolana BeachRancho Santa FeSan MarcosVistaEscondidoBonsallFallbrookPowayRancho BernardoMira Mesa
A connected home
Explore more possibilities.
Your home. Your next chapter.
Let’s make room
for what comes next.
Start with a conversation about your home and your goals.
TNT Design & Build · Your project starts here
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