Commercial Balcony Repair · CSLB #1060736
Balcony Repair for California Commercial & Multifamily Properties
Balcony repairs for wood-framed and concrete balconies — dry rot and framing repair, concrete spalling, failed ledger connections, loose railings, and leaking balconies — for apartment communities, condominiums, HOAs, and hotels across California. We’re CSLB-licensed balcony repair contractors who fix the cause, not the symptom: the structure is repaired and re-waterproofed as one assembly, so the damage doesn’t come back through your next inspection.
- CSLB #1060736 Licensed California contractor
- 9+ yrs Repairing commercial balconies & decks
- SB 721 / 326 Findings repaired & closed on the record
- Commercial Multifamily, HOA & hotel only
01 Why it matters
Balcony damage is structural long before it’s visible
By the time a balcony looks like it needs repair — a soft spot underfoot, a stain on the ceiling below, a railing with give in it — the damage has usually been in the structure for years. Water gets past a failed coating or an unflashed edge, sits in the framing or the slab, and works quietly: rot in the joists and ledger on a wood balcony, corroded rebar and spalling concrete on a concrete one.
That matters more on a balcony than almost anywhere else on a building, because a balcony is cantilevered and occupied. The ledger connection holding it to the building is the single most common failure point in California balcony collapses — and it’s the part you can’t see from the surface.
There’s a compliance clock running too. Every balcony is an exterior elevated element inspected under SB 721 (rentals) or SB 326 (HOAs), and damage found during that inspection has to be repaired on a defined timeline. Balcony repair done properly — structure repaired, then re-waterproofed as one assembly — closes that finding and keeps it closed. Done as a cosmetic patch, it fails again before the next cycle.
A soft spot underfoot isn’t the beginning of the problem — it’s the point where a hidden problem finally reached the surface.
02 The D&B difference
What real balcony repair involves
We repair the balcony as one assembly — structure, waterproofing, and railings — with one CSLB-licensed crew and one warranty. That’s what separates balcony repair specialists from a handyman patching the surface over damage that’s still there.
We repair the cause, not the surface
We open up what’s failing and repair the actual structure — rotted joists and ledgers, spalled concrete and corroded rebar — instead of coating over damage that keeps spreading underneath.
Repair and waterproofing together
Water is what caused the damage, so the repair isn’t finished until the membrane, flashing, and drainage are restored. One crew does both, so there’s no seam between the structural fix and the waterproofing to fail later.
Repairs that close out inspections
We repair to current code and document the work for your SB 721 / SB 326 file — so a flagged balcony gets resolved on the record, not just cleaned up cosmetically.
03 · Service Areas
Where We Work in California
Every city links to a dedicated local page — crews, recent projects and compliance details for that area.
Sacramento Metro
5 cities
East Bay
13 cities
North Bay
7 cities
South Bay & Peninsula
13 cities
Don’t see your city? We likely still cover it — call (916) 848-2728.
04 How a project runs
How a balcony repair runs, start to finish
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01
Assessment
We inspect the balcony surface, railings, flashing, and drainage, take moisture readings, and determine how far the damage has reached into the framing or slab — then tell you honestly whether it’s a repair or a replacement.
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02
Scope & estimate
You get a written scope and a firm price, with any structural findings prioritized by urgency and safety.
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03
Structural repair
We remove the damaged material and repair the structure: rotted joists, ledgers, and posts on wood balconies; crack, spall, and rebar repair on concrete.
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04
Waterproofing & finish
We restore the membrane, flashing, and slope to drain, then reinstall the surface and any railings — repaired or replaced to the 42″ / 4″ standard.
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05
Documentation & handoff
We walk the finished balcony with you and hand over documentation for the property’s SB 721 / 326 compliance file.
05 Scope
What we repair
Every common balcony failure, on wood-framed and concrete balconies alike — handled in-house by one licensed crew, so the structural repair and the waterproofing are never split between contractors.
- Dry rot & wood decay — rotted decking, joists, and posts removed and replaced; sound framing sistered and reinforced
- Ledger connections — the balcony-to-building attachment repaired and re-flashed to current code
- Concrete spalling & cracks — damaged concrete removed, corroded rebar treated, slab patched and resurfaced
- Leaking balconies — the leak traced to its source (flashing, membrane, grout, or drainage) and repaired, not just sealed over
- Railings & guardrails — loose posts re-anchored, corroded railings repaired or replaced to the 42″ height / 4″ sphere standard
- Waterproofing restoration — membrane, flashing, and slope corrected so the repair holds
- Drainage — scuppers and deck drains cleared, repaired, or added
- SB 721 / 326 remediation — inspection findings repaired and documented for the compliance file
Repaired to current code: CBC 1604.8.1 ledger connections · ASCE 7 load criteria · 42″ / 4″ guardrail standard
06 Investment
What balcony repair costs
Balcony repair is priced after an on-site assessment — the honest reason being that the cost depends almost entirely on how far the water got, and that’s not visible from a photo. Two balconies that look identical can differ several-fold once the structure is opened up.
What drives the number
- How far the damage reached — surface only, or into joists, ledger, and framing
- Wood vs. concrete, and whether rebar is corroded
- Number of balconies affected across the property
- Whether the leak source is simple (flashing, grout) or the whole membrane has failed
- Railing repair or replacement included
- Building height, access, and staging requirements
- Whether repairs are tied to an SB 721 / 326 inspection finding on a deadline
What’s included: a written scope with photo documentation, structural repair, waterproofing restoration, and compliance documentation — from one contractor, under one warranty. Final pricing follows an on-site assessment — request a free estimate, no obligation.
In the field
Balcony repairs in progress
Framing opened, boards lifted and the cause addressed before anything goes back down.
07 Project example
A recent balcony repair
An apartment community in the Central Valley had nine balconies flagged during its SB 721 inspection — soft framing at the ledger on several units and one balcony leaking into the apartment below. D&B opened up each affected balcony, replaced the rotted joists and repaired the ledger connections to current code, then restored the flashing, membrane, and slope before reinstalling the surface and re-anchoring the railings. The findings were closed out with photo documentation for the property’s compliance file, and the leak into the unit below stopped.
Two of those balconies looked fine from the top. The rot was at the ledger — exactly where you don’t want it. Regional Property Manager · Central Valley apartment community
08 Case studies
Recent Projects, Documented
Real commercial properties — what the building needed, what we did, and what it delivered.
Balcony RepairBalcony Replacement with Trex Composite Decking — 18 Balconies, AntelopeThe rot had already reached the beams and posts. We rebuilt the framing under every balcony and re-decked…View case study 
Balcony RepairBalcony & Elevated Walkway Replacement — 24 Balconies, LodiEvery balcony and second-floor walkway rebuilt from the framing up — new waterproof deck system, new code-height guardrails,…View case study 09 Client feedback
What property managers say
One of our balconies was leaking into the unit below and two other companies just wanted to re-coat it. D&B found the flashing was the problem, repaired it properly, and the leak stopped.
Our inspection flagged rot on six balconies. They repaired the framing and the waterproofing together and documented everything for our SB 326 file — one contractor for all of it.
They told us straight which balconies could be repaired and which needed rebuilding. We appreciated not being sold work we didn’t need.
10 FAQ
Balcony repair questions
How much does balcony repair cost?
It depends almost entirely on how far the water reached. A surface-level repair on a single balcony is a fraction of the cost of one where rot has reached the joists and ledger — and that isn’t visible until the balcony is opened up. We assess on-site and give you a firm written price with photo documentation, rather than a number that changes once work starts.
How much does it cost to repair a leaking balcony?
A leaking balcony is priced by its source, not its symptom. If the leak traces to flashing, grout, or a drain, the repair is contained. If the membrane has failed and water is already in the framing, the structural repair drives the cost. That’s why we trace the leak first — sealing the surface without finding the source is how balconies get “repaired” twice.
My balcony is leaking into the unit below. What should I do?
Restrict use of the balcony if there’s any softness underfoot or movement in the railing, and get it assessed quickly. Water visible on a ceiling below has usually been in the structure for some time, and on a cantilevered balcony that means the framing. We can assess it and tell you what’s actually failing before it becomes a structural problem.
Can a balcony be repaired, or does it need to be replaced?
Most can be repaired. If the framing is sound and the damage is localized, we repair the affected members and restore the waterproofing. When rot has spread through the joists and ledger, or concrete damage has reached the reinforcing steel across the slab, rebuilding is safer and often costs less than repeated repairs. We tell you which at assessment — including when the answer is that you don’t need us.
Do you repair both wood and concrete balconies?
Yes. On wood balconies we replace rotted decking, joists, and posts and repair the ledger connection; on concrete we remove spalled material, treat corroded rebar, and patch and resurface the slab. Both are re-waterproofed as part of the repair.
Can you repair balconies flagged in an SB 721 or SB 326 inspection?
Yes — that’s a large part of what we do. We repair inspection findings to current code and provide photo documentation for your compliance file, so the finding is closed on the record. Because we handle both the structural repair and the waterproofing, there’s no gap between trades for the next inspection to catch.
Do tenants have to move out during balcony repairs?
Almost never. We phase work balcony by balcony and restrict access only to the balcony being repaired, so units stay occupied. We coordinate notice and scheduling with your property manager in advance.
Are you balcony repair contractors near me in California?
We’re CSLB-licensed balcony repair contractors (#1060736) serving the Bay Area, Central Valley, and Sacramento. Instead of searching for balcony repair companies near you, you can call one contractor who handles the structural repair, the waterproofing, and the compliance documentation in-house.
11 Start here
Get your balcony assessed — free estimate
Send us photos or tell us what you’re seeing — a stain on the ceiling below, a soft spot, a loose railing — and we’ll assess the balcony and give you a free estimate covering scope, timeline, and cost. If it doesn’t need repair, we’ll tell you that too.
CSLB #1060736 · 9+ years · Insured & Bonded · Serving the Bay Area, Central Valley & Sacramento