J & M Builders | General Contractors & Foundation Repair in Monrovia, CA
Monrovia, CA 91016
Company Overview
J & M Builders, founded in 2006 by Paul D. Antuna in Monrovia, CA, brings three generations of construction expertise to every project. Paul’s family background in general contracting and hardware supply gives the company a unique advantage in acquisition, planning, entitling, and design-build construction—all under one roof. Serving Southern California, J & M Builders specializes in new home construction, ADUs, room additions, and full remodels. They also handle essential services like bathroom and kitchen remodeling, deck design, structural repair, and damage restoration. For Monrovia residents, the team understands that water damage from kitchen sink leaks or wet insulation can disrupt daily life. They respond quickly to restore homes, addressing issues like commercial water damage and snowmelt water damage. Located near Monrovia’s historic Old Town and the scenic foothills of the San Gabriel Mountains, J & M Builders is a trusted partner for homeowners looking to renovate, expand, or rebuild with confidence.
Common Questions
What types of room additions does J & M Builders handle in Monrovia?
We handle a wide range of room additions, including bedroom, bathroom, kitchen, laundry room, and garage additions. We also build new story additions and design new rooms to fit your home’s layout. Whether you need more space for a growing family or a home office, our team manages the entire process from design to construction.
How does J & M Builders address water damage restoration in Monrovia homes?
Water damage is common in Monrovia, especially from kitchen sink leaks, wet insulation, or snowmelt runoff. We assess the damage, remove affected materials, and repair structural issues like rotted wood or weakened foundations. Our team also restores commercial properties and ensures your home is dry, safe, and fully functional.
Can J & M Builders help design and build a detached garage or ADU on my property?
Yes, we specialize in detached garage construction and guest house or ADU construction. We handle the design, permitting, and building process, making sure the new structure complements your existing home and meets local Monrovia codes. This is ideal for adding rental income or extra living space.
What the Company Handles
- Laundry room addition
- Bathroom addition
- Single-family home construction
- Structural repair
- Remodeling
- New structure construction
- Bedroom addition
Business Location & Hours
| Mon: | 7:00 AM - 5:00 PM |
| Tue: | 7:00 AM - 5:00 PM |
| Wed: | 7:00 AM - 5:00 PM |
| Thu: | 7:00 AM - 5:00 PM |
| Fri: | 7:00 AM - 5:00 PM |
| Sat: | 8:00 AM - 3:00 PM |
| Sun: | Closed |
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