Florida Milestone Inspection: Exterior Cleaning Guide
Every condominium and cooperative building in Florida three stories or taller must undergo a Milestone Inspection under SB-4D. Before the licensed engineer can evaluate structural integrity, the facade and roof must be clean enough to see through. Our drone exterior cleaning removes the biological growth, salt haze, and pollutant film that hides cracks, spalling, and corrosion — then produces geotagged 4K documentation that serves as a time-stamped compliance record.
Quick answer: Florida Milestone Inspection: Exterior Cleaning Guide
Every condominium and cooperative building in Florida three stories or taller must undergo a Milestone Inspection under SB-4D. Before the licensed engineer can evaluate structural integrity, the facade and roof must be clean enough to see through. Our drone exterior cleaning removes the biological growth, salt haze, and pollutant film that hides cracks, spalling, and corrosion — then produces geotagged 4K documentation that serves as a time-stamped compliance record.
- Service
- SB-4D Compliance
- Method
- Drone soft-wash + pure-water rinse
- Reach
- 200+ ft — no scaffold, no rope access
- Pricing
- $0.20–$0.50 per sqft (fixed quote)
- Timeline
- 1–3 days vs 1–3 weeks rigged
- Compliance
- FAA Part 107 · $2M insured
Why facade condition blocks the Milestone Inspection
SB-4D requires the inspecting engineer to observe the structural condition of load-bearing walls, floor systems, balconies, and roof structures. Decades of Florida coastal exposure produce a surface layer that physically conceals the very defects the law is designed to catch.
- Algae and Gloeocapsa magma hide hairline stucco cracking and EIFS delamination
- Salt-fog chloride deposits mask rust-streaking from corroding balcony steel
- Atmospheric pollutant film conceals concrete spalling at slab edges
- Biological growth on roof membranes hides lifted seams and ponding areas
- Sealant joint failure around windows is invisible under uniform facade staining
- Engineers mark 'visually limited' — triggering a costly clean-and-re-inspect cycle
Drone cleaning as Milestone Inspection preparation
We mobilize a Part 107-certified drone crew with soft-wash chemistry matched to your building's substrate — stucco, EIFS, concrete, glass, or metal panel. The entire envelope is cleaned from the air in 2–5 days with zero scaffolding, then documented with geotagged 4K aerial footage.
- 1
Site review: identify substrate types, airspace, and access constraints
- 2
FAA LAANC authorization filed if in controlled airspace (MIA, FLL, PBI)
- 3
Resident notification via property management (48 hours minimum)
- 4
Drone soft-wash all elevations, roof, parapets, and balcony undersides
- 5
Pure-water rinse leaves zero mineral residue — no new masking layer
- 6
4K aerial documentation delivered within 48 hours as indexed photo/video gallery
Why this works
Safer for crews, faster for tenants, cheaper for owners — and cleaner for the building.
Reveals structural defects hidden by decades of biological growth and salt haze
Eliminates the 'visually limited' loop that delays engineer certification
2–5 day timeline vs 4–8 weeks for scaffold mobilization
Zero street closures, sidewalk permits, or elevator lockouts
Geotagged 4K documentation becomes the SIRS baseline photograph
Chemistry matched to substrate — no high-pressure damage to aged EIFS or sealant
FAA Part 107 certified, $2M liability, fully insured UAS operations
Supports both Milestone Inspection and 40-year recertification prep simultaneously
Drone cleaning vs traditional prep for Milestone Inspections
Mobilization time
Traditional
4–8 weeks (scaffold)
Drone cleaning
3–5 days
Crew at height
Traditional
Rope access or swing stage
Drone cleaning
Zero — ground-based pilot
Ground footprint
Traditional
Sidewalk closure permits
Drone cleaning
Single parking space
Surface damage risk
Traditional
Scraping and pressure marks
Drone cleaning
Low-pressure soft-wash only
Documentation
Traditional
Cell-phone photos, unindexed
Drone cleaning
Geotagged 4K video gallery
SIRS baseline
Traditional
Rarely captured
Drone cleaning
Standard deliverable
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See how commercial properties across Miami are cleaned without scaffolding, boom lifts, or rope access — safer, faster, and 30–60% more cost-efficient.
Prep your building for the Milestone Inspection
Send the address — we'll confirm your SB-4D trigger date, propose a cleaning window, and deliver a fixed-price quote with geotagged 4K documentation included.
What is a Florida Milestone Inspection and how does exterior cleaning help?
A Florida Milestone Inspection is the SB-4D structural safety review required for every condominium and cooperative building three stories or taller once it reaches 25 years (coastal) or 30 years (inland). Before the licensed engineer can inspect for stucco cracking, concrete spalling, rebar corrosion, or waterproofing failure, the facade and roof must be free of biological growth, salt haze, and pollutant film that physically hides structural defects. Drone exterior cleaning removes that surface masking in 2–5 days without scaffolding, then produces geotagged 4K documentation that serves as a time-stamped record of pre-inspection condition for the association's compliance file.
- Law
- SB-4D (2022), HB 913 (2024)
- Trigger age
- 25 yrs coastal / 30 yrs inland
- Applies to
- Condos & co-ops, 3+ stories
- Inspection cycle
- Every 10 years after first
- Prep duration
- 2–5 days (drone, no scaffold)
- Documentation
- Geotagged 4K video + photo set
Buildings that need Milestone Inspection prep
SB-4D applies to every condo and co-op in Florida of three stories or more. Here are the most common scenarios where drone cleaning accelerates compliance.
Coastal Condos (Miami-Dade, Broward, Palm Beach)
Salt-fog and chloride deposit buildup on oceanfront towers hides rebar corrosion and stucco cracking. Drone soft-wash removes the surface mask so the engineer's visual inspection is unobstructed.
Inland HOAs (Orlando, Tampa, Jacksonville)
Thirty-year inland triggers mean buildings that have never faced a formal structural review. Algae and Gloeocapsa magma growth on EIFS and stucco conceal delamination and joint failure until cleaning exposes it.
Post-Surfside Compliance Push
Associations accelerating their first Milestone Inspection ahead of the statutory deadline need fast facade prep. Drone cleaning compresses a 6–8 week scaffold timeline into a single week.
Structural Integrity Reserve Study (SIRS)
SB-4D requires every condo association to maintain a SIRS with reserve funding for major structural systems. The geotagged 4K documentation from the pre-inspection clean becomes the baseline photograph for remaining-useful-life calculations.
Insurance & Underwriting Renewal
Carriers writing condo master policies increasingly request documented exterior maintenance. A dated, geotagged 4K photo set showing clean facade and roof condition supports premium negotiations at renewal.
Engineer Re-Inspections
When the first inspection returns 'visually limited by surface condition,' the association must clean and re-present. Drone cleaning finishes fast enough to hold the engineer's already-scheduled return window.
Questions about Milestone Inspection exterior prep
Does SB-4D actually require exterior cleaning before the Milestone Inspection?+
SB-4D does not explicitly mandate cleaning, but it requires a 'sufficient' visual inspection of load-bearing walls, balconies, and roof structures. On a Florida building with decades of salt haze, algae, and atmospheric soiling, engineers routinely note 'visually limited' and require the association to clean and re-present. Cleaning first eliminates that loop.
What is the difference between a Milestone Inspection and a 40-year recertification?+
The 40-year recertification is a Miami-Dade County ordinance (Code §8-11(f)) applying to all commercial and residential buildings at 40 years, then every 10 years. The Milestone Inspection is state law (SB-4D) applying specifically to condominium and cooperative buildings of 3+ stories at 25 years (coastal) or 30 years (inland), then every 10 years. A building can be subject to both. The drone cleaning process supports either.
How does drone cleaning help the engineer find structural problems?+
Biological growth, salt film, and pollutant deposits create a uniform surface stain that visually blends with hairline cracks, spalling edges, and sealant gaps. Low-pressure soft-wash detergent breaks the surface tension holding that film to the substrate, and pure-water rinse removes it completely. What remains is the bare facade — every crack, rust streak, and delamination border becomes visible at ground level and in 4K aerial footage.
Can the drone pilot flag issues during the cleaning flight?+
Yes. Our Part 107 pilots are trained to identify common structural indicators — rust streaking from corroding balcony tie-ins, stucco cracking patterns, displaced roof tiles, lifted membrane seams, and failed sealant joints. Every anomaly is photographed, geo-located by elevation and approximate floor, and delivered to the property manager within 48 hours of the flight. This is not an engineering inspection, but it is a documented pre-inspection screen that helps the board prioritize repair scopes before the engineer arrives.
What surfaces can be cleaned for Milestone Inspection prep?+
Stucco, painted concrete, EIFS, glass curtain wall, anodized aluminum, metal panel, tile roof, shingle roof, flat membrane roof, parapet caps, balcony undersides, and slab edges. Chemistry is matched to each substrate — never high-pressure, which can force water behind EIFS or damage aged sealant.
How is the 4K documentation delivered and formatted?+
The deliverable is a cloud-hosted gallery organized by elevation (North, South, East, West) and subsystem (facade, roof, parapet, balcony). Every photo and video clip is GPS-tagged and time-stamped. A summary PDF indexes the gallery by anomaly location, severity flag, and recommended follow-up scope. Most associations attach the PDF directly to their Milestone Inspection submittal package.
More answers in our full drone cleaning FAQ.