ADU General Contractor

California’s Premier ADU Contractor

In Milpitas serving Santa Clara, San Jose, Cupertino, Menlo Park, Mountain View, Palo Alto, Los Altos, Los Gatos, Sunnyvale, Milpitas, Fremont, Morgan Hill and Surrounding Cities. An accessory dwelling unit (ADU) is a popular home construction project because it adds valuable living space to your property. All Heating & Air Conditioning is a Milpitas  ADU contractor and architect who can manage this entire home improvement project, from ADU design to construction.

There are many options when it comes to the types of ADUs that are possible and ideal for your home. All Heating & Air Conditioning can design and build an ADU from the ground up (as an attached or detached ADU). We can also design and build an ADU garage conversion.

Additionally, we’re experts in the permits, state law requirements and ADU ordinances issued by the city of Milpitas, CA and surrounding cities. We manage the processes needed to acquire the proper building and zoning documentation so you don't have to do so.


All Heating & Air Conditioning is a Milpitas ADU contractor and ADU construction company that's here to expand your home's space and value so it better suits your needs.

OUR EXPERT TEAM ARE HERE FOR YOU. Contact Us Or Call Us at: (408) 892-6555

Accessory Dwelling Unit vs Room Addition

ADU homes – otherwise known as granny flats or mother-in-law houses – are new structures that are attached or detached from the existing residence. It acts as a stand-alone home with its own kitchen, bath, bedroom and living space. An accessory dwelling unit can act as a guest house, rental unit, separate living or workspace, or pool house. 


A room addition, on the other hand, is where a single-family home's main structure is expanded for additional square footage. These projects are often done to enlarge a kitchen, family room or master bedroom – or to add a new bedroom and/or bathroom. This construction can also include building a second or third story. 

Milpitas ADU Services

All Heating & Air Conditioning has 20+ years of experience doing new construction and renovations in Milpitas, CA and Surrounding Cities. We’re a full-service ADU contractor with an equal focus on high-quality craftsmanship and unbeatable customer service. Your satisfaction and comfort are our number one goal. All Heating & Air Conditioning can manage every facet of your Milpitas ADU construction, including when converting your garage. Though our expertise includes design, architecture and engineering, we’re happy to partner with an independent architect, designer or engineer you plan to hire.

  • Architectural Planning
  • Open Floor Plans
  • Design & Construction
  • Engineering
  • Permit Acquisition
  • Kitchen Construction
  • Bathroom Construction
  • Demolition
  • Structural Improvements
  • Electrical & Lighting
  • Title 24 Energy Efficiency
  • HVAC
  • Roofing
  • Tilework
  • Plumbing
  • Flooring
  • Painting
  • Windows
  • Doors
  • Solar Panels

ADU Design & Construction for Less Time & Money

Choose from nearly 30 gorgeous ADU plans pre-approved by the city of Milpitas, CA. These detached, flexible designs shorten the permit process by eight weeks or more! Spanning 200-1,200 square feet, they're designed to suit most residential properties and range from studios to 2-story ADU plans. These ADU designs and floor plans offer exciting features, including rooftop decks, exterior staircases, expansive patios, abundant natural light and stunning architectural elements.

How It Works

All Heating & Air Conditioning can help you select the right plan for your property and your needs. Simply contact us for a site visit and free estimate. We then manage the plan submission process for you. As a one-stop-shop, we also build your ADU from the ground up, managing every element of construction for a seamless, expedited project completion. Not seeing a plan that’s right for you? Our architectural team can design a custom ADU with an interior and exterior that has all the features and aesthetics you want.

Our Recent ADU Projects

All Heating & Air Conditioning is an ADU contractor for Milpitas. Servicing Santa Clara, San Jose, Cupertino, Menlo Park, Mountain View, Palo Alto, Los Altos, Los Gatos, Sunnyvale, Milpitas, Fremont, Morgan Hill and Surrounding Cities. Here’s a look at some of our recently completed ADUs. Contact us today to schedule a free consult and estimate for your Milpitas, CA ADU!

VIEW OUR COMPLETED PROJECT

Schedule Your ADU Design & Construction Appointment Today

Ready to unlock the potential of your property with an Accessory Dwelling Unit (ADU)? Schedule your design and construction appointment today with our experienced team. Whether you're looking to create additional living space for guests or generate rental income, we'll work closely with you to design and build a custom ADU that meets your needs and maximizes your property's potential. Contact us now to schedule your appointment and bring your ADU vision to life!

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ADU Contractor (Website Form)

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For Reliable HVAC Solutions & Renovations

For reliable HVAC solutions and renovations, trust All Heating & Air Conditioning. With our expertise and dedication to excellence, we deliver top-quality results tailored to your needs and preferences.

CONTACT OUR TEAM

OR CALL US NOW AT:

(408) 892-6555

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Experience our exceptional service firsthand at All Heating & Air Conditioning

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HEAR FROM OUR CLIENTS

I requested a check-up on my 20 year old furnace. Victor came by the next day and looked carefully at the furnace operation and internal parts. He said things still looked OK and described how some of the major parts would look if they were bad. This was great service and honesty. I fully recommend this business!!!

Dave B.

Google Review

Victor was prompt and easy to communicate with over phone and text. His father and crew came up to fix a leak in my furnace. They installed 2 pans for both furnaces (previous owner didn't put one in, sign) and got the drain pipes at a good angle. Good local family business.

Thomas H.

Yelp Review

Victor and his father removed our old ducts and replaced them with new flexible ducts at a very reasonable price. The job was done in a day. Victor and his father are genuinely nice people and very professional to work with. Would highly recommend this family owned business.

Rishit J.

Google Review

Victor came by and was absolutely professional, courteous, and easy going. He diagnosed the problem why our AC wasn't pushing out cold air, fixed it, and was on his way. Only had to spend $180 which was a relief as well. Would recommend this company as well as Victor, his service was nothing short of excellent.

Carlos B.

Yelp Review

Quick response, efficient, professional and friendly. I appreciated the tech explaining everything he diagnosed and the details of the repair. Offered the option of a new system and let me know the details but was not pushy. I signed up for the maintenance program, overall happy with the service and happy to support a small business.

Mona F.

Google Review

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