New GMP Facility Construction
Ground-up plants built to FDA cGMP from day one.
GMP / NSF DESIGN-BUILD
One contractor. One contract. One audit-ready facility.
W SUN Construction is a Southern California design-build general contractor specializing in FDA/GMP-compliant manufacturing facilities. We take your plant from concept to a commissioned, audit-ready building.
Project view
Completed production facility
Clean production space, ready for operation
Capabilities
Design, build, and qualify the whole facility.
Design-build services for production facilities and controlled environments that meet GMP requirements, satisfy applicable FDA regulations, and are ready for NSF certification.
Cleanroom Design-Build
ISO Class 5–8 controlled environments, from design through construction.
Expansions & Retrofits
Grow inside your operating plant without shutting it down.
MEP & Cleanroom HVAC
In-house mechanical: the air system your classification depends on.
Commissioning & Validation Support
IQ/OQ/PQ documentation and certification, ready for inspectors.
Audit Readiness & Remediation
We fix the 483 findings — and build so the next one never happens.
GMP & NSF
Built for GMP. Ready for NSF Certification.
GMP (Good Manufacturing Practice) is the legal requirement for manufacturing food, dietary supplements, cosmetics, and drugs. For dietary supplements, cosmetics, and OTC drugs, the NSF/ANSI 455 series (455-2, 455-3, 455-4) is the corresponding third-party audit standard. We don't issue certifications — we build what auditors look for into the design and construction, so your facility is ready for its NSF audit the day it's delivered.
- Cleanrooms:ISO 7 / ISO 8 cleanrooms with easy-clean walls, seamless epoxy flooring, and HEPA filtration
- Pressure & HVAC:positive-pressure cascades in clean zones, negative pressure in dirty zones, constant temperature and humidity, filtered fresh-air systems
- Zoning & flow:separate zones for receiving, storage, production, packaging, and inspection; segregated personnel and material flow; gowning rooms and airlocks
- Floors & access:heavy-duty epoxy flooring in high-load areas, high-speed doors to reduce cross-contamination
- Audit details:pest control, drainage, dust-free light fixtures and vents — everything an auditor checks, handled during construction
Build it right the first time — it costs far less than retrofitting later, and gets your NSF certification moving faster.
Why W SUN
Accountability from concept through qualification.
A general contractor built around regulated manufacturing.
01We engineer for the inspection, not just the ribbon-cutting.
02In-house MEP means the air system isn't someone else's problem.
03Built to expand — modular walls and planned utility capacity for your next line.
Built for production. Engineered for inspection.
Industries served
Industries we serve.
Each project starts with the process, the governing standard, and the inspection path.
Dietary Supplements (NSF/ANSI 455-2)
Facilities that meet 21 CFR Part 111 from slab to ceiling.
Food & Beverage
Sanitary, washdown-ready plants built to 21 CFR Part 117.
Pharmaceutical
ISO-classified cGMP environments, sterile to non-sterile.
Pet Food
Animal-food plants built to 21 CFR Part 507 and state feed standards.
Cosmetics
Hygienic GMP facilities aligned with ISO 22716.
Data Centers
ISO Class 8 controlled environments with ASHRAE-grade contamination control.
Facility environments
High-speed door
Controlled environment
Mechanical systemsHow we deliver
Five phases. One accountable team.
Plan
We map your product, process, and regulations to a facility concept and a budget.
Design
GMP zoning, classifications, and airflow engineered before construction starts.
Build
Cleanroom and MEP construction with contamination-controlled sequencing.
Commission
IQ/OQ/PQ, certification, and an audit-ready turnover package.
Support
Requalification and maintenance that protect your validated state.
Planning a regulated facility?
Tell us what you make, where you are, and what the facility must achieve.
(626) 656-0939info@wsunconstruction.com