Balcony Repair & Waterproofing Experts in Southern California
Transparent costs | Permit management | Reliable results
Why Homeowners and HOAs
Choose Bay Cities Construction
Balconies across Los Angeles, the South Bay, and Orange County endure constant exposure to sun, salt air, and moisture. Over time, this causes dry rot, corrosion, and waterproofing failures that compromise safety and structure.
Bay Cities Construction specializes in balcony repair, waterproofing, and compliance with SB-326 and SB-721. With more than two decades of experience in Southern California, we handle every stage: from inspection and permitting to final approval, so homeowners, property owners, and managers can move forward with confidence.
Important Note:
If you live in an apartment, condo or HOA, this is additionally important as these repairs are now mandated by the state, known as SB 721 and SB 326. However, the property owners, property managers, and leaseholders are responsible for having the repairs done.
Typical Balcony Repair and Waterproofing Costs
We believe in transparency before any work begins. Here’s a general guide based on current regional averages.
| Type of Work | Average Cost Range | Includes |
|---|---|---|
| Minor Waterproofing Repairs | $2,500 – $4,000 | Surface reseal or coating maintenance |
| Standard Balcony Repair | $8,500 – $11,500 | Framing, sheathing, and waterproofing system |
| Structural or Dry-Rot Rebuild | $12,000 – $20,000+ | Joist repair, structural reinforcement, new system |
| SB-326 and SB-721 Inspections | $750 – $1,200 | Required for multi-unit properties and HOA's |
Addressing early signs of damage keeps costs manageable. Once moisture reaches framing or joists, repair expenses increase sharply.
Permit Requirements for Balcony Repairs
Most balcony projects in California require permits, particularly when structural elements or waterproofing systems are replaced.
Bay Cities Construction manages the entire process:
✅ Prepare and submit documentation to Building and Safety Departments
✅ Coordinate directly with city officials
✅ Schedule inspections and secure approvals
✅ Ensure full compliance with SB-326 and SB-721
Our team works with multiple jurisdictions across Los Angeles, the South Bay, and Orange County, helping projects move through permitting efficiently and correctly.
Why Timely Repairs Matter
Moisture, heat, and salt air quickly deteriorate balcony materials, even when damage isn’t visible from the surface. Small cracks and leaks eventually compromise framing and structural supports, leading to higher repair costs and safety concerns.
Timely repairs preserve structural integrity, maintain property value, and ensure compliance with California safety codes.
Project Timeline and What to Expect
Most balcony repairs are completed within two to three weeks once permits are issued.
We provide clear schedules, daily communication, and transparent progress tracking.
| Stage | Duration | Description |
|---|---|---|
| Consultation & Estimate | 1–2 days | Site assessment and quote review |
| Permit & Preparation | 3–5 days | City coordination and material ordering |
| Demo & Structural Repair | 3–10 days | Removal of damaged areas and structural work |
| Waterproofing & Finishing | 2–4 days | Installation of waterproof system and coatings |
| Inspection & Sign-Off | 1–2 days | City or HOA approval and documentation |
SB-326 and SB-721 Compliance
California law requires ongoing inspection and repair of balconies, decks, and elevated walkways under SB-326 (for HOAs) and SB-721 (for apartments and multi-unit buildings).
Bay Cities Construction provides:
✅ Licensed inspections and reports
✅ Repair and waterproofing of identified deficiencies
✅ Documentation for city, HOA, and compliance records
We help property owners and managers throughout Los Angeles, the South Bay, and Orange County stay compliant and safe.
Why Property Owners Trust Bay Cities Construction
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Over 20 years of balcony repair and waterproofing experience
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Licensed, bonded, and insured in California
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Complete permit and inspection management
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Transparent pricing and detailed project estimates
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Warranty coverage on materials and workmanship
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Residential Waterproofing Conversation
Get More Info about your waterproofing needs.
We'll reach out in the next 48 hours to schedule your first conversation via phone or Zoom call.
Frequently Asked Questions
Balcony Repair & Waterproofing
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How soon can work begin after I approve the quote?
Most projects begin within one to two weeks, depending on permit timing and material availability.
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Do you provide a warranty?
Yes. All balcony waterproofing and repair work includes a warranty for materials and workmanship.
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Can you work with my HOA or property manager?
Yes. We coordinate directly with HOAs and property managers for approvals and inspections.
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Do you service coastal properties?
Yes. Our waterproofing systems are designed to withstand coastal exposure across the South Bay and Orange County.
What's Next?
Still have questions about your Bay Cities Construction adventure. Then keep learning more.

