Residential Design, Feasibility & Project Guidance

Helping homeowners, property owners and small developers understand what is possible and move projects forward with confidence throughout San Luis Obispo and Santa Barbara Counties.

Work With Us

You do not have to know where to start.

Most residential projects begin with more questions than answers.

Can I build it? How big can it be? What will the County allow? Do I need an engineer? What about septic, utilities, fire access or Title 24? Who do I call first? And how do I avoid spending money designing something that will not work?

That is where Coastline comes in.

With backgrounds in residential design, development, permitting, feasibility, and project delivery, we can look at a project from more than one angle. We help identify constraints early, explore the possibilities, connect the right professionals, and organize the pieces into a clear path forward.

You do not need to arrive with all the answers. You just need to know what you are hoping to accomplish.

Bring us the property. Bring us the idea. We’ll help you figure out the path forward.

Whatever you're planning, we'll help you navigate the possibilities.

We believe good decisions happen early. We take the time to understand the property, the project, and your goals before jumping to a solution. From feasibility and design through permitting and project coordination, our role is to help uncover constraints, organize the moving pieces, and keep you informed about what comes next.
Our work ranges from homeowners planning remodels, additions, and ADUs to contractors who need design or permit support. We also work with property owners, developers, institutions, and community organizations looking to thoughtfully evaluate, improve, or develop a property.
No one person should pretend to have every answer. Residential projects often require structural and civil engineers, energy consultants, surveyors, contractors, specialty designers, and other professionals. We work alongside trusted specialists and help coordinate the right expertise as the project requires.

Meet Denise & Rigoberto

Our Services

We investigate the property before you invest in the project.
We help you evaluate the property, identify constraints, clarify your goals, and determine the most practical path forward.
Feasibility Reviews • Property & Site Evaluation • Early Project Strategy • Development Planning
Turn the idea into a defined project.
From remodels and additions to ADUs and new residential projects, we develop thoughtful design solutions around how you want to live, what the property allows, and what the project needs to accomplish.
Conceptual Design • Schematic Design • Space Planning • Remodels, Additions & ADUs
Prepare the project to move from design toward construction.
We develop permit-ready drawings, coordinate required consultants, incorporate code and agency requirements, and help navigate the permitting process.
Construction Documents • Consultant Coordination • Permit Support • Plan Check Responses
Keep the design intent and project decisions moving forward.
As construction begins, we can remain involved on the owner’s side to answer design questions, coordinate information, support finish decisions, and help keep everyone working from the same plan.
Design Observation • Owner-Side Coordination • Finish Selections • Field & Consultant Coordination