Home Additions - JGR Construction

Home Additions

A good addition should look original and perform efficiently

South & West Santa Clara County · Licensed, Bonded, and Fully Insured | CA Lic. B & C10

New Construction

Home Additions

An addition gives your family more space without leaving the property you already value. The hard part is making the new work blend with the original — roofline, foundation, utilities, finishes, and how the whole house uses energy afterward.

In Morgan Hill and Gilroy, additions often expand established ranch-style homes while keeping yard space and neighborhood character intact — master suites, family rooms, kitchen extensions, or a second story when the structure allows it.

In San Martin, Coyote, and larger parcels, we see guest quarters, detached ADUs, workshops, and estate-style wings where insulation, HVAC, solar readiness, and electrical load all need to scale with the new square footage.

In Los Gatos, Saratoga, Campbell, Cupertino, and San Jose, additions usually mean tighter lot lines and a visible roofline tie-in — planning the structural connection, matching exterior materials, and pulling permits through the local building department so the finished space reads as one home, not a patch.

  • Seamless roofline & exterior tie-in
  • Foundation, framing & structural integration
  • Insulation, HVAC & energy performance
  • Electrical rough-in & modern load planning
  • Master suites, family rooms, ADUs & guest quarters
  • Permits, inspections & full project management

Request a Home Addition Consultation

Fast response · Licensed, Bonded, and Fully Insured | CA Lic. B & C10

The Process

From Foundation to Finish

From foundation to finish, every stage affects comfort and performance.

Concrete foundation stem walls for a home addition tied to an existing house
Foundation
Wood wall framing for a home addition connected to the original structure
Framing
Fiberglass batt insulation installed in addition wall cavities before drywall
Insulation
Terracotta tile roofline tie-in where the addition meets the existing home
Roofline tie-in
Electrical rough-in with boxes and wiring during a home addition build
Electrical rough-in
Finished interior living space inside a completed home addition
Finished interior

An addition changes the home's energy profile — more lighting, HVAC demand, outlets, and future electrical use. We plan so the new space is not only bigger, but also better insulated, properly wired, and ready for modern loads, with inspections coordinated through the right city or county office on every job.

The goal is not for someone to say, “Oh, I can see where they added that.” The goal is for the new space to feel like it belonged there from day one.

Real Reviews

What Our Clients Say

100% verified reviews from our actual clients on Houzz, Yelp, and Google Business — every word is theirs, not ours.

MH
Michael H.
Yelp iconYelp

Due to a code enforcement case the city forced me to build a carport. After talking with a handful of different contractors Jorge came out and quickly provided an estimate and timeline for the work. Jorge understood that I was looking for a no frills carport and his estimate was more inline with what I was looking for than anyone else I had talked to. Throughout the building process Jorge was very responsive to all questions and requests and his team was consistently there in the morning and very respectful. Jorge worked with the city to schedule all the required inspections and worked with the inspector to make sure everything that was required was done. From the beginning to the end of this project Jorge was excellent to work with. JGR Construction will be the first to be called for any future projects I have and will also be recommended to all my friends.

SP
Sujit P.
Yelp iconYelp

We selected JGR Construction based on their great Yelp reviews to replace our arbor/pergola by a new one and were not disappointed. Jorge is very reliable and easy to work with. It was obvious that he had fun completing this project since we chatted often and late in the evening re the best material selection and project details. He and his crew showed up on time, got the work completed within the promised timelines and delivered a very nice result. His crew even worked carefully around our plants so as not to damage them. We have future projects in and around our house lining up and Jorge will be the first we are going to reach out to.

SK
Shanthi K.
Yelp iconYelp

We hired Jorge to add a room in our house. He started work within 3 months after I talked to him. He also recommended a very good engineer to do design. As promised, he finished the job within 1 month. His crew are very good and listen to our concerns. They come on time and keep the place relatively clean even during construction. He gives attention to details and does quality work. On top of that he is responsive to phone calls, text messages and very easy to work with. All our friends and family loved the room that we added. Many of the folks told us that new room, roof, walls doesn't look like it was being added. It looks as if it's been there from the very beginning. I highly recommend Jorge. It will be hard to find a good contractor like Jorge.

MD
Mary D.
Yelp iconYelp

We interviewed four contractors we found on Yelp to remodel my house. All of the reviews for JGR Construction were great, but we had no idea that Jorge would become our hero. He has such a great personality and is a very intelligent person with integrity. We had plans from an architect but Jorge suggested changes that improved the project immensely. He was always patient with us and always had an idea to deal with the bumps that arose with a 62 year old house. We truly can't thank him enough. Our project turned into a total house renovation with two small additions. Jorge changed the plans to remove little walls and further open up the space and he put the heater in the attic and turned the space into a large pantry for the new kitchen. He improved the ceiling in the kitchen and the sunroom that raised the ceiling. He added an eave on the house where a previous addition was done incorrectly. He handcrafted a beautiful mantel and added a gas fireplace among the many other improvements including new bathrooms, tankless water heater, roof and so much more. His team was fun to work with and we enjoyed them very much. They were dedicated to doing a good job and making us happy.

EL
Elmer L.
Yelp iconYelp

I talked with Jorge to do some work on my front yard. We agreed to remove the natural grass and replace one part with artificial grass and the rest with concrete. My family was very pleased with the finished work and now we are enjoying a nice front of the house and not to worry with my yard being dry because of the drought. Thank you Jorge! Next the hardwood. Take care, Elmer Latorre

ST
Shan T.
Yelp iconYelp

Jorge and his team did a fantastic job to replace our old deck. The work was very neat and completed the job really fast. Initially, even for giving the quote, he came to our house within 1 hour after I called him. Really happy with his service and kudos to Jorge and his team.

Google
5.0 Rating
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