Mason Heating & Air Conditioning
general contractor in San Francisco, California 94103
- Rating
- 5.0 / 5.0 from 1 reviews
- Address
- 42 Otis St, San Francisco, CA 94103
- Open
- 5 days a week
- Website
- masonheatingandair.com/
- Service area
- San Francisco
- Phone
- (415) 350-1371
About
Mason Heating & Air Conditioning is located at 42 Otis St, San Francisco, CA 94103. The business operates Monday through Friday, 8 AM to 5 PM, and is closed on weekends.
The business has a 5.0 rating on Google from 1 review.
Service Area
Serving San Francisco.
Frequently Asked Questions
What are your hours?
Mason Heating & Air Conditioning is open Monday through Friday, 8 AM to 5 PM. The business is closed on Saturday and Sunday.
How do I reach you?
Call (415) 350-1371 or visit the business at 42 Otis St, San Francisco, CA 94103.
Hiring a General Contractor in San Francisco, California
Before hiring a contractor in California, verify their license through the Contractors State License Board (CSLB). You can look up any contractor's license status online at the CSLB website using either their license number or business name. This check will show you the current status of their license and any complaint disclosures.
Different types of contractor licenses cover different scopes of work. California issues licenses for general building contractors, specialty contractors (such as HVAC, electrical, plumbing, and roofing), and residential remodeling contractors, among others. Identifying the right license type for your project is important when selecting a contractor.
Most projects in California require a building permit. Code requirements vary by city and county, so check with your local San Francisco building department to confirm what permits you need before work begins. A licensed contractor can guide you through this process.
How do I check a contractor's license in California?
Visit the CSLB website and use their license lookup tool. You can search by contractor license number or business name. The search will show you whether the license is current and any complaint information. [4]
What types of contractor licenses does California issue?
California issues licenses for general building contractors, general engineering contractors, residential remodeling contractors, and many specialty contractors including HVAC, electrical, plumbing, roofing, and others. Each license type covers specific work scopes. [1]
Do I need a building permit in San Francisco?
Yes. California Building Standards Code requires a separate permit for any building or structure being erected, constructed, enlarged, altered, repaired, moved, improved, removed, converted, or demolished. Contact your local San Francisco building department to find out what permits are needed for your specific project. [3]
What should I ask a contractor before hiring?
Before signing a contract, verify their license status through the CSLB, review their license type to ensure it covers your project scope, ask about their approach to permitting and building codes, and get details about their contract terms in writing. [2]
Sources
- California CSLB — licensing classifications (read 2026-09-20)
- California CSLB — hire a licensed contractor (read 2026-09-20)
- California CSLB — do I need a building permit? (read 2026-09-20)
- California CSLB — check a license (read 2026-09-20)
Contact Information
Address: 42 Otis St, San Francisco, CA 94103
Phone: (415) 350-1371
Website: http://www.masonheatingandair.com/
Business Hours
| Monday | 8 AM – 5 PM |
|---|---|
| Tuesday | 8 AM – 5 PM |
| Wednesday | 8 AM – 5 PM |
| Thursday | 8 AM – 5 PM |
| Friday | 8 AM – 5 PM |
| Saturday | Closed |
| Sunday | Closed |