Basement Remodeling · San Jose, CA/Updated June 13, 2026
The Best Basement Remodelers in San Jose, CA
Transforming your basement into a functional space is essential in San Jose's housing market. Here are the top remodelers to consider.
MHMaya Hendricks · Home Services Editor Updated June 13, 2026 · Next review July 2026
Editorially independent3 companies evaluated
cover story
★ Editor's ChoiceQuartz Construction
95Score
Latest update · June 13, 2026: Initial ranking published. 3 San Jose-metro basement remodeling businesses evaluated, top 3 ranked by Vetted Score.
Basement remodeling can significantly enhance your home's value and livability, especially in a competitive market like San Jose. With limited providers evaluated, it's crucial to choose a reliable remodeler who can bring your vision to life.
We ranked three local basement remodelers based on their Vetted Scores, customer ratings, and review counts. The field is thin, with most providers under 50 reviews, so we focused on those with the best track records to provide you with trustworthy options.
3basement remodelers evaluated in San Jose
4.97average rating across the field
120customer reviews analyzed
Cityvetted analysis of public Google review data, updated June 13, 2026.
Our evaluation process involved assessing the quality of service provided by each remodeler based on their customer ratings and review counts. We do not accept payment for placement; our rankings are entirely independent and based on merit.
This list is refreshed monthly to reflect the latest customer experiences, ensuring you have access to the most current information when making your choice.
The Vetted Score: six weighted factors
Customer sentiment25%
Rating quality20%
Review volume & velocity20%
Website trust signals15%
Service breadth10%
Business longevity10%
Sentiment is measured by AI analysis of review text, recency-weighted, with verified-pattern checks to discount suspicious review bursts.
With a stellar rating of 4.9 from 70 reviews, Quartz Construction is highly regarded for its attention to detail and quality craftsmanship. Customers frequently highlight their professionalism and ability to meet deadlines. They excel in creating functional and aesthetically pleasing basement spaces. However, with a busy schedule, availability might be limited.
High Level Design Build has a perfect 5-star rating from 31 reviews, showcasing their commitment to quality and customer satisfaction. Clients appreciate their innovative designs and collaborative approach. They are ideal for homeowners seeking customization in their basement remodels. A smaller review base may leave some potential clients hesitant. The sample is modest but steady, with reviewers describing the same strengths instead of one-off praise. Most of what reviewers hire it for is custom basement designs and remodels. It serves San Jose, CA, with $15,000 to $40,000 pricing, and the honest trade-offs are limited reviews compared to top competitor and potentially longer wait times for projects.
One-Up Builders & Remodeling holds a 5-star rating from 19 reviews, reflecting their dedication to customer satisfaction. Reviewers note their versatility, handling various remodeling projects with ease. They are particularly suited for those needing a multi-room renovation alongside basement work. However, fewer reviews may indicate less established trust in the market.
Pros
Versatile remodeling services
Strong customer satisfaction
Good communication
Cons
Fewer reviews may indicate less experience
May not specialize exclusively in basements
Best forHomeowners needing comprehensive remodeling services
Selecting the right basement remodeler involves careful consideration of their past work, customer feedback, and your specific needs.
Review Ratings and Count
Look at both the overall rating and the number of reviews. A higher rating with a substantial number of reviews indicates consistent quality.
Project Specialization
Consider remodelers who specialize in basement projects. Their expertise can lead to better design and execution tailored to your basement's unique challenges.
Customer Feedback
Read through customer reviews for insights on communication, timelines, and overall satisfaction. Pay attention to any recurring themes in the feedback.
What it costs
What basement remodeling costs in San Jose
The cost of basement remodeling in San Jose varies based on the scope of work and materials used. Here’s a breakdown of typical pricing tiers:
Basic Remodel$10,000 to $20,000 - This includes essential updates like flooring and paint.
Mid-Range Remodel$20,000 to $50,000 - This tier often includes more extensive renovations such as new walls, lighting, and fixtures.
High-End Remodel$50,000 to $100,000 - Customized designs, high-quality materials, and full layouts can fall into this range.
Luxury Remodel$100,000+ - For top-of-the-line finishes and major structural changes, expect to invest significantly.
Frequently asked questions
How much does basement remodeling cost in San Jose?
Basement remodeling in San Jose typically ranges from $15,000 to $50,000, depending on the extent of the work and materials used.
What are the most common basement remodeling projects?
In San Jose, common projects include creating additional living space, home offices, or entertainment areas, as well as adding bathrooms.
How often is this ranking updated?
We re-run the full analysis monthly with fresh review data. Last updated June 13, 2026.
Our verdict
For most San Jose homeowners: <strong>Quartz Construction</strong>
Given the ratings and review counts, Quartz Construction emerges as the best choice for basement remodeling in San Jose. With a 4.9-star rating from 70 reviews, their proven track record offers reassurance. Close behind is High Level Design Build, holding a perfect 5-star rating from 31 reviews, although with fewer reviews, their reliability is still forming. Lastly, One-Up Builders & Remodeling also holds a 5-star rating but with only 19 reviews, making them a promising but unproven option for your project.
Cityvetted
