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Find Shelter or outbuilding builders in Napa

Avatar for Hutson Home Craft Construction
Hutson Home Craft Construction
5.0(
3
)

Serving Napa, CA and surrounding areas

Approved

In business since 2016

Free estimates

Credit card accepted

"Was very pleased with there work. The workers kept the other parts of the house clear of any dust or dirt while completing the project. very respectful."
job name A
job name A
job name A
Bathroom remodel
Bathroom remodel

+6

Response time1 day
Response rate95%
Recommended by100%of homeowners
RSF Construction Inc.
1.0(
1
)

Serving Napa, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

IY Development & Renovation
4.9(
143
)

Serving Napa, CA and surrounding areas

In business since 2022

Free estimates

Credit card accepted

"IY Development and Renovation exceeded all my expectations with our kitchen remodel. Ilan Yosef and his team not only brought my vision to life but also added their expertise to create an even more stunning result. The work was precise, clean, and on schedule. Ilan made sure to address any questions or concerns I had along the way, and his transparency was refreshing. I m absolutely in love with my new kitchen, and I ll definitely be using IY Development for future projects!"
Recommended by50%of homeowners
Avatar for DeJohn Construction
DeJohn Construction
5.0(
9
)

Serving Napa, CA and surrounding areas

In business since 2007

Free estimates

"The Job went perfectly.
 Beau did an impeccable job attaching the conservatory to the main house without any dust or  construction debri entering the home.  He cleaned up every day after work. He kept the exact hours he said he would work. He kept the job on schedule.
He worked with the city on all the permitting and inspections.
The quality of workmanship was well beyond my expectations and became the envy of everyone who saw the finished room.
Beau came in right on bid. NO COST OVER RUNS!

I would highly recommend him for any job from building an entire home to remodeling that garage you have been putting off for a while."
Recommended by100%of homeowners
Cobar Builders Inc.
5.0(
12
)

Serving Napa, CA and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"I’ve been working with Cobar Builders for a while now and was great with multiple jobs in my home. From our full kitchen remodel to upgraded can lights all around, added new beautiful 3” LED lights in my dark living room. He changed my sliding door to a lovely French door. I’m very pleased with their work and always turn to them"
Additional Photos
Additional Photos
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Additional Photos

+20

Recommended by100%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)

Serving Napa, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Finally an honest Solar company!! I went through several companies trying to get quotes for one of my properties, either they were ridiculously expensive or they didn't return my calls. A friend of mine referred me to Mega Sun and I have to say I am very pleased. Within a couple days from the initial phone call I already had an estimate and once i decided to go with them the installation was completed in one week. Its been a little over a month since they completed the install and everything is working smoothly.

I was amazed at just how great the customer service was. I just want to say thank you to the whole team who helped out, I really appreciate all your hard work. Now I know you guys are the ones to call for all future jobs."
Additional Photos
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Additional Photos
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Additional Photos

+32

Recommended by100%of homeowners
Avatar for Result Construction Lic#1111481
Result Construction Lic#1111481
5.0(
3
)

Serving Napa, CA and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"I rarely write reviews, but Result Construction deserves this shoutout. Converted my old garage into a stunning ADU that’s now the envy of my Sacramento neighborhood. The process was smooth, the team was friendly, and they actually listened to what I wanted. Plus, they finished ahead of schedule and under budget. Who does that? Result Construction does"
1st Floor Converted to ADU (2024)
Garage Conversion in Sacramento, CA (2023)
ADU 600f ADU Building
Garage Conversion into a studio
1st Floor Converted to ADU (2024)

+4

Recommended by100%of homeowners
Weaver Electric
4.8(
9
)

Serving Napa, CA and surrounding areas

In business since 2013

Free estimates

Credit card accepted

"I needed to get a fixture and switches replaced in my house. I contacted Steve and he responded quickly saying he would be in my area in a day or two. He came by and did a professional job at a reasonable price. With demand for electricians so high, its difficult to get electrical work done on a timely basis. I highly recommend Steve and will hire him again when the occasion requires it."
Recommended by100%of homeowners
Showing 1-10 of 38
FAQs for shelter or outbuilding building service projects in Napa, CA

A bomb shelter is an abode built to withstand disaster. Bomb shelters may refer to a space or bunker that can protect inhabitants through a hypothetical nuclear attack, apocalypse, or any other massive crisis. People usually build bomb shelters underground and stock them to live there a few days to a month at a time. Doomsday bunkers accommodate long-term living rather than just through a short crisis.

Builders construct bomb shelters with reinforced steel, box culvert, concrete, or other durable materials (but many professionals do not recommend shipping containers, as they’re not designed to live underground. If building underground, you’ll first have to excavate land before building the actual structure. You’ll have to implement air and water filtration systems, septic systems, and power supply.

It takes a lot of experience to safely and legally construct a bomb shelter, not to mention make sure it’s fit to live in for extended periods of time. It’s best to talk to a residential structural engineer near you for proper guidance.

The current standard filtration systems require filtering both air and water. For air, you’ll want an NBC filter system, which both domestic and international producers make. NBC stands for Nuclear, Biological, and Chemical, which filters out all three. If you’re only building your shelter for natural disasters, chemical attacks, and biological attacks, you may opt for the less expensive HEPA filter system. 

Water filtration requires the same level of care. You’ll likely want to have a large water storage capacity to survive short-term disasters. For long-term living, you’ll want to have a water filtration system.

Rising S bunker prices depend on the size, ranging anywhere from $20,000 to $9 million. Their least expensive model is 96 square feet while their most expensive model has a gym, swimming pool, hot tub, and bowling alley.

  • Mini: $45,500

  • Standard Bomb Shelter: $67,500–$109,500

  • Silver Leaf: $140,000–$182,500

  • Admiral: $180,000–$500,000

  • Xtreme: $450,000–$780,000

  • Xtreme Bunker Complex: $840,000–$1,830,000

  • Luxury Series: $3,800,000–$9,600,000

You almost always need a permit to build a bunker on land with any type of public utilities running through it. You’ll want to check with your local building code enforcement agency to see if this is the case for your area. 

Because you’re building a structural component that often requires electricity, water, and sewage services, you’ll need to apply for permits to attach these utilities to your new property. However, off-grid-only units in rural areas may not need all or any of the permitting you’d normally find in more urban settings.

To survive a nuclear blast, you’ll need to have your bunker at least three feet underground. However, it’s usually advisable to put it further underground. To survive a close strike, you’ll want to have the bunker at least 10 feet down and with five-foot thick reinforced concrete. However, knowing exactly how deep to build depends on the size of the blast you’re trying to avoid. Most bunkers don’t need to be more than 5 feet below the ground. 

The Napa, CA homeowners’ guide to shelter or outbuilding building services

From average costs to expert advice, get all the answers you need to get your job done.

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