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Alto Builders

California

ADU Builders, ADU Designers

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Website

https://altobuilds.com/

Alto Builders is a premier design-build construction and remodeling company serving homeowners and businesses throughout Los Angeles County and Ventura County. Founded as a family-led company by Paul Manfredi, Simon Manfredi, and Lana Manfredi, Alto Builders combines decades of construction expertise, innovative design thinking, and personalized client service to deliver exceptional residential and commercial projects. The company specializes in custom homes, Accessory Dwelling Units (ADUs), whole-home renovations, fire rebuilds, additions, and high-end remodeling projects, managing every phase of construction from concept to completion.

Rooted in a commitment to craftsmanship, transparency, and collaboration, Alto Builders was established with the vision of creating spaces that are not only structurally sound but also thoughtfully designed to enhance the way people live and work. By integrating design, permitting, project management, and construction under one roof, the company provides a seamless experience that simplifies the building process while maintaining the highest standards of quality.

Residential & Commercial Construction Services

Alto Builders offers comprehensive design-build and general contracting services tailored to meet the unique needs of each client. Their experienced team works closely with homeowners, architects, designers, and developers to ensure every project is executed with precision and attention to detail.

Services Include:

Accessory Dwelling Unit (ADU) construction
Detached ADUs
Garage conversion ADUs
Custom home construction
Whole-home remodeling
Kitchen remodeling
Bathroom remodeling
Home additions
Ground-up residential construction
Fire rebuild services
Architectural management
Design-build services
Interior design coordination
Permit acquisition and management
Commercial construction and tenant improvements

Every project is supported by detailed planning, advanced 3D visualization tools, comprehensive project management, and a commitment to delivering results that align with the client’s vision and budget.

ADU & Fire Rebuild Specialists

Alto Builders has developed extensive expertise in ADU development throughout Los Angeles and Ventura County. The company manages every stage of the ADU process, including design, budgeting, permitting, and construction, creating turnkey solutions for homeowners seeking rental income opportunities, guest houses, home offices, or multigenerational living spaces.

In addition, Alto Builders has become a trusted rebuild partner for communities affected by the January 2025 Eaton and Palisades Fires. The company actively manages numerous fire rebuild projects across Altadena, Pacific Palisades, and Malibu, helping families rebuild their homes through coordinated design, permitting, and construction services.

ADU Solutions Include:

Detached backyard cottages
Garage conversions
Above-garage ADUs
Guest houses
In-law suites
Rental income units
Home office spaces
Multigenerational housing solutions

Why Homeowners Choose Alto Builders

Family-owned and operated company
More than 30 years of construction experience
Full-service design-build approach
In-house design expertise
Specialized ADU construction services
Comprehensive permit and project management
Advanced 3D visualization and planning
Expertise in custom homes, remodels, and fire rebuilds
Transparent communication through modern project management systems
Strong reputation for craftsmanship and client satisfaction

By combining traditional craftsmanship with modern building technology, Alto Builders creates spaces that are functional, beautiful, and built to last.

Building Los Angeles’ Future One Project at a Time

At Alto Builders, construction is about more than buildings—it is about creating environments where families grow, businesses thrive, and communities recover and prosper. The company approaches every project with a dedication to quality, integrity, and thoughtful design, ensuring that each space reflects the unique goals and lifestyle of its owner. Whether constructing a custom home, building an ADU, completing a luxury renovation, or rebuilding after a disaster, Alto Builders delivers personalized service and exceptional results from start to finish.

Core Values

Craftsmanship
Delivering superior workmanship and attention to detail throughout every phase of construction.

Collaboration
Working closely with clients, architects, and designers to bring each vision to life.

Integrity
Maintaining transparency, accountability, and professionalism throughout the building process.

Innovation
Combining advanced design tools, modern construction techniques, and creative problem-solving to deliver exceptional outcomes.

From luxury remodels and ADUs to custom homes and large-scale rebuilds, Alto Builders continues to help property owners across Southern California transform ideas into enduring spaces built with care, precision, and purpose.

Business Hours

Monday: 8:00 AM - 6:00 PM
Tuesday: 8:00 AM - 6:00 PM
Wednesday: 8:00 AM - 6:00 PM
Thursday: 8:00 AM - 6:00 PM
Friday: 8:00 AM - 6:00 PM
Saturday: 9:00 AM - 1:00 PM
Sunday: CLOSED

Service Area

Agoura Hills CA
Alhambra CA
Baldwin Hills CA
Beverlywood CA
Burbank CA
Calabasas CA
Camarillo CA
Chatsworth CA
Culver City CA
Echo Park CA
El Segundo CA
El Sereno CA
Exposition Park CA
Fairfax CA
Gardena CA
Glendale CA
Granada Hills CA
Hawthorne CA
Hermosa Beach CA
Inglewood CA
La Cañada Flintridge CA
La Crescenta CA
Lake Balboa CA
Lawndale CA
Leimert Park CA
Long Beach CA
Manhattan Beach CA
Mar Vista CA
Marina del Rey CA
Mission Hills CA
Monterey Park CA
Moorpark CA
Newbury Park CA
North Hollywood CA
Northridge CA
Oak Park CA
Pacoima CA
Panorama City CA
Pasadena CA
Pico-Union CA
Playa del Rey CA
Playa Vista CA
Porter Ranch CA
Redondo Beach CA
Reseda CA
San Gabriel CA
San Marino CA
Santa Monica CA
Sherman Oaks CA
Silver Lake CA
Simi Valley CA
South Pasadena CA
Sunland CA
Sylmar CA
Tarzana CA
Thousand Oaks CA
Torrance CA
Valley Village CA
Van Nuys CA
Venice CA
West Adams CA
West Hollywood CA
West Los Angeles CA
Westchester CA
Westlake Village CA
Whittier CA
Wilmington CA
Windsor Hills CA
Woodland Hills CA

https://www.linkedin.com/company/alto-builders/

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https://www.instagram.com/alto.builders/

5450, Lake Lindero Drive, Agoura Hills, Los Angeles County, California, 91301, United States

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