Serving the Bay Area including Alameda, Contra Costa, Santa Clara, San Mateo, Marin and San Francisco Counties. Major cities served: Hayward, San Leandro, SanLorenzo, Castro Valley, Fremont, Oakland, Union City, Berkeley, Pinole, Pleasanton, Danville, Dublin, Walnut Creek, Concord, San Rafael, Mountain View, San Francisco. Northern and Southern California specializing in Seismic Retrofitting.

Builders Unlimited, Inc. is a general contractor and is responsible for the
day-to-day oversight of the construction site, residential or commercial
management of vendors and trades, and keeping communication between
the involved parties open and clear throughout the course of a project.

Depending on the size of a project, responsibilities may include:
1. Filing for building permits, securing the property.
2. Providing temporary utilities on site, managing personnel on site.
3. Providing site surveying and engineering.
4. Recycling and Disposal of construction waste, monitoring schedules
and cash flows, maintaining accurate records as construction continues.

Seismic Retrofitting

Soft Story Seismic Retrofitting is the modification of existing structures to make them more resistant to seismic activity, ground motion, or soil failure due to earthquakes.

1. Increasing the global capacity (strengthening). This is typically done by the addition of cross braces or new structural walls.
2. Increasing the local capacity of structural elements. This strategy recognizes the inherent capacity within the existing structures, and therefore adopts a more cost-effective approach to selectively upgrade local capacity (deformation/ductility, strength or stiffness) of individual structural components.
3. Allowing sliding connections such as passageway bridges to accommodate additional movement between seismically independent structures.
4.Exterior reinforcement of building.
5. Exterior concrete columns.

General Contractor

Constant quality checks assure a smooth project. We have a supervisor on the job site at all times, and he manages the projects minute-by-minute, says the team management of Builders Unlimited Inc. We are also at the site regularly, so any questions come directly to management. That way, our employees never have to guess. We let them know exactly what the homeowner expects and needs. It's convenient to have one contractor you can rely on for every facet of construction and home restoration like remodeling, plumbing, roofing, electrical, HVAC and concrete. Builders Unlimited Inc. of Hayward performs remodeling projects of all sizes, and takes special pride in the ability to work within the budget of each client. As a one stop shop, they can even work directly with your drafts person or architect, saving you time and hassle.

Home Renovation

Builders Unlimited Inc. is a full service remodeling company since 2007  combining true craftsmanship with personalized service that insures a positive and enjoyable experience.
Our success has been measured by the mastery of craftsmanship and
through high customer satisfaction.  Specializing in additions to kitchens, bathrooms, home theaters, libraries and outdoor living spaces, pools, spas, water fountains and landscaping. Because your home is one of your primary investments, we will be overseeing the conversion of that investment. It is important that we get to know each other and build a relationship of trust.  That relationship starts with the initial meeting and builds as we go step-by-step through the remodeling process. Our goal is 100% client satisfaction, and it is the flow of the project and quality of the work that creates satisfaction and encourages clients to recommend Builders Unlimited Inc.


Builders Unlimited Inc. understands that a commercial renovation is always a considerable investment. Not only does it draw on your business’s capital but the end result needs to be carefully considered in a way that improves not only the appearance of your workplace but also your bottom line. Each unique business model requires careful study to develop a renovation strategy that will increase things like productivity, foot traffic, or social interaction. For example, what works for a retail storefront business or high impact sales office is going to be vastly different from a restaurant model, and even then, the type of store or restaurant is crucial to your design plans. So while a softly lit, romantic theme might work for a corner side fine dining restaurant, it’s certainly not ideal for a family style Italian eatery in a strip mall.

About Us

Builders Unlimited, Inc. is a family-owned, minority enterprise incorporated in the
state of California since April 2007 and holding a General Contractors “B” license
with a C-8 Concrete Specialty.
President and Chief Financial Officer Greg Diaz and Vice President and
Chief Estimator Arturo Diaz together have more than forty years experience in the construction industry.
Prior to incorporation, the principals owned Builders Unlimited Home Improvement
as a partnership specializing in residential remodels and landscaping services.
Additional construction history includes more than
five years each as superintendents and a
combined twenty years working in Iron Workers Local 416.

Builders unlimited, Inc.

Our mission is to provide quality construction services and
exceptional customer satisfaction through honesty and integrity.
We pay special attention to detail while maintaining fair and professional
relationships with our customers, suppliers, subcontractors
and fellow team members.

What We Do?

General Contractor - B License
C-8 Concrete Specialties
Residential and Commercial
CSLB. Lic#894212

Why Choose Us?

We pay considerable attention to our customers.

  • Pricing
  • Quality Construction
  • Attention to Detail.
  • Honesty and Integrity.
  • Family Owned

Our Expertise

3. Subcontracting
40% Complete (success)
2. Commercial and Residential
40% Complete (success)
1. General Contractors
40% Complete (success)

Builders Unlimited, Inc.
General Contractors B License
C-8 Concrete Specialties

Picture Gallery

General Building Contractors
Commercial, Residential and Soft Story Seismic Retrofitting

For a free consultation let Builders Unlimited Inc. develop a
commercial or residential renovation plan that will maximize the appearance
of your workplace while minimizing any interruptions to your workflow.

The commercial landscape department is led by Art and Greg Diaz who have worked in the green industry in northern California since 1997.  Our highly trained foremen effectively communicate with clients to fulfill their needs. The entire team treats every project with the care they would as if it were their home.
Builders Unlimited, Inc. Commercial Landscape Department provides the following services: installation of trees, shrubs, perennials and annuals, fire lanes, reforestation. Soils and mixes: green roofs Irrigation systems, craning large trees, transplants, seed and sod wildflower meadows, wetland restoration, fencing topsoil, re-spread/soil modification, structural wall entrance monuments, and features design/build projects.

Contact Us

Builders Unlimited, Inc.
510.783.1979 Office Phone
510.760.0278 Greg's Mobile
510.760.0131 Art's Mobile
510.783.3914 Office Fax

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