24+ years in operation
Established in 2002. Coastline has delivered projects across Southern California through changing markets, codes, and expectations.
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Coastline Home Services
Second Story Additions
Vertical expansion with structural clarity, temporary living plans, and finishes that connect to the existing home.
Service Overview
What this service includes
A second story is a structural project first — then an architectural one.
Coastline manages second-story additions with foundation and framing evaluation, engineering coordination, permitting, weather protection, and finish work.
We plan for occupied homes carefully: access, dust control, temporary roofing, and weekly communication.
Owners choose Coastline when they want one licensed GC accountable for the full vertical addition — not a handoff between disconnected trades.
- Typical project size
- $300K – $800K
- Typical duration
- 6 – 14 months
- Permit requirements
- Yes
Why Coastline
Why homeowners choose Coastline
Professional project management
Dedicated project managers, structured communication, and clear milestones from evaluation through completion.
Licensed & insured
California General Contractor License #813394. Fully licensed, bonded, and insured for your protection.
Documented process
Clear digital communication and documented milestones — without replacing the human relationship at the center of every build.
Our Process
From evaluation to completion
Evaluation
We review your project scope, site conditions, and goals before scheduling a site visit.
Planning
Design coordination, permits, selections, and a detailed scope aligned to your vision.
Pre-construction
Scheduling, site protection, material procurement, and mobilization before work begins.
Construction
Managed build with regular updates, inspections, and a dedicated project manager.
Completion
Final walkthrough, punch list resolution, and project handoff.
Project Gallery
Second Story Additions in progress and completed
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Before & After
The transformation
Project Video
See the work
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FAQ
Frequently asked questions
That depends on existing structure, soils, and proposed loads. Evaluation and engineering determine feasibility before design is finalized.
Some projects allow partial occupancy; others require temporary relocation during framing or roof work. We assess this early.
Jurisdiction and plan complexity drive timing. We set expectations after reviewing the city or county process for your address.
Permits
Common permit information
Permit requirements for second story additions vary by scope and jurisdiction. Coastline identifies requirements during evaluation. Typical permit level: Yes.
Permit assessment
We review your project scope against local building department requirements before construction begins.
Documentation & submission
Coastline prepares and submits permit applications and schedules required inspections.
Licensed execution
All work performed under California General Contractor License #813394.
Related Projects
Second Story Additions projects
Whole Home
Laguna Beach Whole Home
Laguna Beach
Custom Home
Malibu Custom Home
Malibu
Service Areas
Southern California
Coastline serves homeowners across Southern California counties.
Smart Project Evaluation
Smart Project Evaluation
Share photos, plans, or a description of your project. A Coastline project manager reviews your submission and responds within one business day — no obligation.
Begin with a project evaluation
No obligation. Share your project details and a Coastline project manager will respond within one business day.
Request a Project EvaluationOr Contact Coastline · License #813394