Building single-story, multistory, custom, and prefabricated self storage facilities across the Pacific Northwest.

Custom & Prefabricated Self Storage Construction Company in Washington

Sea Con is a Washington-based commercial general contractor specializing in the design and construction of self-storage facilities. From ground-up single-story drive up unit buildings to complex multistory climate-controlled storage facilities, we deliver self storage construction projects on schedule, within budget, and built to last.

With nearly 50 years of commercial construction experience and a proven track record across the Pacific Northwest, SEA CON brings the structural expertise, skilled labor, and insurance capacity to handle self-storage projects that other contractors simply can’t.

Let's work together

Washington Self Storage Builders

Self-storage construction is more demanding than it looks — and for serious operators and investors, cost control and value engineering aren’t afterthoughts. They’re built into how we work from day one. A successful facility requires precise structural coordination, efficient unit layout planning, code-compliant fire and life safety systems, durable exterior materials, and the engineering know-how to build vertically without sacrificing efficiency or budget.

Sea Con has the experience, the resources, and the licensed personnel to manage every phase of your self-storage construction project. We work directly with owners, investors, and developers to deliver facilities that open on time, on budget, perform operationally from day one, and hold their value for decades.

Whether you’re breaking ground on your first self-storage facility or expanding an existing one, Sea Con is built for this.

Full-service self-storage construction from site evaluation through final turnover.

Our Self Storage Construction Services

Sea Con provides comprehensive general contracting and construction management services for self-storage facilities of all sizes and configurations. Whether you need an experienced builder to help bring a fully designed project across the finish line, or a partner who can guide you from site selection and feasibility through design, permitting, and construction, we can engage at whatever stage makes sense for your project. Our team coordinates design teams, subcontractors, permitting agencies, and specialty vendors so you can stay focused on your business.

New Ground-Up Self-Storage Construction

Site preparation, foundations, structural framing, mechanical, and full building turnover for new self-storage developments.

Multistory Self-Storage Construction

Structural and project management expertise for vertically stacked facilities, including podium construction, elevator coordination, and load-bearing design.

Prefabricated Self Storage Construction

Cost-effective, fast-to-erect steel building systems for single-story and multi-bay self-storage configurations.

Climate-Controlled Storage Facility Construction

Insulated envelopes, HVAC coordination, and vapor management for temperature-sensitive facilities.

A structured, transparent process from first conversation to final walk-through.

How We Build Your Self-Storage Facility

Self-storage development involves a lot of moving parts — and the difference between a smooth project and a costly one often comes down to how early you get the right contractor involved. Sea Con can engage at the earliest stages so that feasibility, site constraints, structural options, and budget expectations are aligned before a single dollar is committed to design.

01

Pre-Construction & Feasibility

We start by understanding your project: site conditions, facility type, unit mix goals, phasing requirements, and budget parameters. Our team conducts site evaluations, provides preliminary construction budgets, and evaluates structural system options — including PEMB, hybrid, and conventional construction — so you can make an informed decision before committing to a design direction.

02

Design Coordination & Permitting

Sea Con manages the design team through schematic design, construction documents, and permit submission. We act as the owner’s advocate throughout this process — flagging constructability issues early, driving value engineering opportunities, and keeping the design aligned with your budget and operational goals. Our familiarity with Washington permitting agencies helps keep projects on schedule through the approval process.

03

Construction

Once permits are in hand, Sea Con manages the full construction process — self-performing key scopes where appropriate and overseeing a vetted network of specialty subcontractors. Our project management team maintains detailed schedules, tracks budgets in real time, enforces safety protocols, and communicates proactively so there are no surprises at closeout.

04

Turnover & Post-Construction Support

We don’t disappear at the finish line. Sea Con provides complete project closeout documentation, coordinates final inspections and certificate of occupancy, and remains available for post-construction support as your facility opens and begins operations.

Built for Multistory.
Ready for Any Project.

Most regional general contractors can build a row of single-story drive-up units.

Multistory self-storage construction is a different challenge entirely — and it’s where SEA CON separates itself from the field.

A successful multistory self-storage project requires much more than just stacking floors of storage. From efficient and coordinated sequencing to meet aggressive timelines, to code-required departures from single story self-storage such as elevators, tight lot lines, and an experienced subcontractor base well versed in the nitty-gritty details of storage construction — it demands a contractor who’s done it before. Many contractors in the PNW simply aren’t equipped or experienced for it. Sea Con is.

We’ve built multistory commercial buildings and complex structural projects throughout Washington, Oregon, and Idaho. Our team understands how to manage the additional coordination layers that come with multistory self-storage — from podium level parking and retail to upper floor climate-controlled units — and we bring that experience to every project we take on.

Sea Con Construction’s commitment to excellence was on full display throughout their work on the new hangars and FBO facility for Modern Aviation. From the start, their team demonstrated unmatched professionalism, bringing in-depth expertise to every phase of construction. The result is a state-of-the-art facility that perfectly meets our needs. Sea Con’s attention to detail and dedication to quality exceeded our expectations, delivering the project on time and within budget. We couldn’t be happier with the outcome and look forward to partnering with them on future developments. Highly recommended!

/ Barry Sherman
Construction Manager
Modern Aviation Hangars

Who We Self Storage Build For

Sea Con partners with a wide range of clients on self-storage construction projects across Washington and the Pacific Northwest.

We have providine self storage construction services to a variety of industries:

• Private Investors & Owner-Operators • Real Estate Developers • REITs & Institutional Storage Operators • Municipalities & Public Agencies • Property Owners

No matter your background or experience level with self-storage development, Sea Con provides the structure, oversight, and construction expertise to move your project forward confidently.