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Find Basement remodelers in Alta

Avatar for On The Line Construction
On The Line Construction
4.6(
10
)
Basement - Remodel

Serving Alta, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"On The Line Construction rebuilt our pergola and did an outstanding job. The team was professional, on time, and kept everything clean. The workmanship is excellent, pricing was fair, and communication was great throughout. Highly recommend them for quality and reliability!"
deck build
1300 sqf wrap around redwood deck with 3 staircase
new deck and new rail and balusters staircase
new deck on with open windows
new front deck and rail

+32

Response time10 hrs
Response rate94%
7 neighbors recently requested a quote
Avatar for Paul Menesini
Paul Menesini
5.0(
3
)
Basement - Remodel

Serving Alta, CA and surrounding areas

Approved

In business since 2025

Free estimates

"Paul did a phenomenal job remodeling the master bathroom and building the walk-in in the master bedroom. He also rebuilt my deck with a trellis covering plus building a pergola in my backyard. He also landscaped my front and backyard. He is a master contractor who pays attention to the smallest detail. In fact waiting for him to move back to the Bay Area to remodel my guest bathroom."
Avatar for Barraza Construction, Inc.
Barraza Construction, Inc.
5.0(
1
)
Basement - Remodel

Serving Alta, CA and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

Welcome to BARRAZA CONSTRUCTION INC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

Response time3 days
12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Clear Horizon Home Solutions, Inc.
Clear Horizon Home Solutions, Inc.
4.3(
214
)
Basement - Remodel

Serving Alta, CA and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"We contacted them for remodel of 2 of our bathrooms. Excellent work by the project manager and his team on our master bathroom and guest bathroom remodel. He helped us come up with a good design and took care of everything including scheduling inspections and approval of permits. He even accompanied us during shopping trips and provided valuable inputs to help us pick finishing materials. He is also very receptive of critical feedback and goes the extra mile to make sure we are happy with the work at the end of the day. Overall very pleasant experience working with the manager and his crew. Highly recommended!"
1
2
3
Kitchen Remodels
2

+2

Recommended by82%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Basement - Remodel

Serving Alta, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"We recently had Mega Power Electric Inc install a solar system and panels. The President and provided excellent communication all the way through the process. He even met with us after installation to explain the almost incomprehensible PG&E bill. Although not the least expensive bid, his was competitive and I felt he was as interested in educating me about solar and the various types of panels and inverter systems as he was in selling a system. He demonstrated how the array of panels would meet our energy needs and as opposed to some of the other companies, wasn't selling us more than we needed. We are very satisfied with our solar system and I highly recommended Mega Power Electric Inc."
Additional Photos
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+32

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

Serving Alta, 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
Showing 1-10 of 45
FAQs for basement remodeling projects in Alta, CA

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Alta, CA homeowners’ guide to basement remodelings

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