Before any solar panel goes on your roof, a site survey has to happen first. This step tells you whether your building can safely carry the added weight, whether your electrical system can handle the new load, and whether your project will meet local building codes. We put together this guide to walk Florida business owners through what a site survey actually checks, what commonly fails, what happens if it does, and what the process costs before you commit to one.
Key Takeaways
- We confirm that a site survey checks three main areas: structural capacity, electrical readiness, and code compliance, before any solar design moves forward.
- We see roof age, roof material, and existing electrical panel capacity as the most common reasons a project needs extra work before installation.
- We explain that most commercial site surveys take a few hours to complete on site, with a full report following within one to a few weeks.
What a site survey actually checks
A commercial solar site survey checks three key areas: the roof, electrical system, and local requirements.
Roof and structure: The team checks the roof’s age, condition, and ability to support the solar panels and mounting equipment. They may also consider how long the roof is expected to last.
Electrical system: The team checks the electrical panel, wiring, and available capacity to determine how the solar system can connect safely.
Codes and permits: The survey checks applicable building, fire, and utility requirements, including panel placement and Florida’s wind-resistance requirements.
A site survey helps identify these factors before installation begins.
What a site survey may identify
A few issues come up more often than others during site surveys.
- Aging roofs: A roof nearing the end of its expected lifespan is one of the most common reasons a project needs extra planning. Installing solar on a roof that will need replacement in a few years usually is not a good use of your investment.
- Outdated electrical panels: Many older commercial buildings have electrical panels that were never designed for a solar connection. This can mean an upgrade is needed before the system can be installed.
- Structural limits: Older or unusual roofs may need extra support before solar panels can be installed.
- Shading and space: Trees, equipment, or rooftop units can reduce the space available for solar panels and may affect the system size or cost.
What happens when the survey finds an issue
A failed check does not mean your solar project is over. In most cases, it means an additional step gets added to your plan.
If your roof needs reinforcement, your installer can usually recommend and install it, then move forward once it is complete. If your electrical panel needs an upgrade, that becomes a line item in your project cost and timeline rather than stopping the project. If your roof is nearing the end of its life, some owners choose to replace the roof and install solar at the same time, which can simplify the overall project.
The survey’s job is to catch these issues early, before installation begins, so you are not surprised partway through the project.
How long a survey takes and what it costs
Most commercial site visits take anywhere from a few hours to a full day to complete, depending on the size and complexity of your building. The full written report, including structural and electrical findings, generally follows within one to four weeks.
Cost depends on your building, roof, and whether an engineer is needed. Basic surveys may cost a few hundred dollars, while larger projects may cost more. Ask for a clear estimate before booking.
A site survey helps you understand what your building can support before moving forward with solar. It also helps you plan your budget and avoid surprises.
Frequently asked questions
Does every commercial roof need a site survey before installing solar? Yes, a site survey is required before any commercial solar installation.
Can an older roof still qualify for solar?
Yes, older roofs can qualify, though some may need reinforcement first.
Do I need to upgrade my electrical panel for solar?
Not always, but many older buildings do need one.
Is the site survey the same as the final system design?
No, the survey feeds into the design that comes after.
Can I get a survey before deciding to move forward with solar?
Yes, most owners use the results to help decide next steps.
Our Service Areas
Hillsborough County: Tampa, Brandon, Riverview, Valrico, Plant City, Apollo Beach, Sun City Center
Pinellas County: St. Petersburg, Clearwater, Largo, Pinellas Park, Dunedin, Tarpon Springs, Seminole
Manatee County: Bradenton, Palmetto, Lakewood Ranch, Ellenton, Holmes Beach
Sarasota County: Sarasota, Venice, North Port, Osprey, Nokomis, Englewood
Pasco County: Wesley Chapel, New Port Richey, Zephyrhills, Dade City, Land O’ Lakes, Hudson
