Situations
Solar on a shared condominium roof
Who gets the roof, who votes, who insures it, and the question no statute we read answers.
Written by HyreSolar Research team Research and analysis
Audited by HyreSolar Research team Data audit and fact check
The short answer
The real problem is arithmetic, not permission
Most writing about condominium solar asks whether the association can say no. That is the wrong first question, and our survey of state access statutes covers it separately: in most states an association may prohibit installations in common areas outright, and a condominium roof usually is common area.
Where the answer is not simply no, a harder question appears immediately. A building has one roof and many owners. The roof has a finite usable area, and not all of it is equally good. If four owners share a roof and one applies first, does that owner get the south-facing plane and the rest get what is left? If eight owners share a roof that fits four systems, who are the four?
This is the question a declaration was never written to answer, because declarations predate anyone wanting to generate electricity on a roof. It is also the question that makes condominium solar genuinely different from a detached house rather than merely more bureaucratic.
One statute we read answers it directly. California requires the allocation to be determined, by a named method, before an installation proceeds. Whether the answer it produces is right in any given building is a separate matter, but the existence of a required allocation is the thing worth knowing, and it is almost never mentioned.
The rest of this page is about the machinery: what the survey must contain, what vote is or is not required, what insurance you must carry and for how long, what happens when you sell, and what nobody has written down at all.
The survey that divides the roof
California's provision applies when an association is reviewing a request to install a solar energy system on a multifamily common area roof shared by more than one homeowner. It is the operating manual for the access right rather than the right itself, and it is where the practical detail lives.
The association must require a solar site survey. It must show the placement of the system, and it must be prepared by a licensed contractor or by the contractor's registered salesperson knowledgeable in the installation of solar energy systems. Its purpose is stated: to determine usable solar roof area.
And the survey must go further than the applicant's own system. It "shall also include a determination of an equitable allocation of the usable solar roof area among all owners sharing the same roof, garage, or carport". Read that again. The first applicant's survey has to work out what everybody else's share of the roof is. You cannot take the good half and leave the question of the rest to whoever comes next.
What the statute does not do is define "equitable". It does not say equal shares, it does not say shares in proportion to unit size or to the ownership interest recorded in the declaration, and it does not say the allocation must produce equal generating potential rather than equal square footage. Those are very different answers on a roof where one plane faces south and another faces north. The statute names the duty and leaves the standard to whoever performs the survey.
There is a cost sting worth knowing about before you commission anything. The statute says the survey, or the costs to determine usable space, "shall not be deemed as part of the cost of the system" for the purposes of the section that governs how much cost an association may impose. In plain terms, the survey's cost sits outside the statutory cost tolerance. An association can require an expensive survey without that expense counting against the limit that would otherwise protect you.
The allocation is the negotiation, and you should treat it as one
If you are the first applicant in your building, the survey you pay for will set the pattern for every neighbour who follows. That gives you influence and it gives you exposure. A survey that carves out a generous share for you will be scrutinised by everyone who comes after; one that divides the roof mechanically by area may hand you a plane that generates poorly.
Ask what standard of equity the surveyor is applying, and get it in writing. Equal area, equal generating potential, allocation in proportion to ownership interest, and allocation in proportion to consumption are four different answers, and the statute chooses none of them.
If you are not the first applicant, ask for the earlier survey. Your share may already have been determined by somebody else's contractor, in a document you never saw, on a standard nobody agreed.
And expect the survey to cost real money that does not count toward the cost limit. Budget for it separately from the system.
The vote that was removed, and why three sections have to be read together
Granting one member the exclusive use of part of the common area is a serious act, and California's default rule treats it as one: it normally requires the affirmative vote of members owning at least 67 percent of the separate interests. In a building of any size that is a high bar, and it is a bar that a single owner wanting to put panels on a shared roof would almost never clear.
Solar is written out of it. The list of exceptions to that supermajority requirement includes granting exclusive use "to install and use a solar energy system on the common area roof of a residence" that meets the requirements of the access sections and, where applicable, the survey section.
The same problem is attacked from the other side too. The access provision separately bars an association from requiring a members' vote, including the vote specified by the exclusive-use section. So one section says no vote may be required, and another says this kind of grant is exempt from the vote that would otherwise be required. Belt and braces, and deliberately so.
All three came from a single bill, enacted in 2017 and effective on 1 January 2018, at three consecutive sections of that bill. Treating them as separate provisions that happen to interact is a mistake: they are one enactment with three moving parts, and reading any one of them alone gives an incomplete answer.
What this does not do is make the association a bystander. The survey section expressly says it does not diminish the association's authority to impose reasonable provisions under the access section. The vote is gone. The review is not.
What the applicant is required to do, and for how long
| Obligation | What the statute requires | How long it lasts |
|---|---|---|
| Notify the neighbours | Notify each owner of a unit in the building on which the installation will be located, of the application | At application |
| Carry liability insurance | Maintain a homeowner liability coverage policy at all times | Continuously, for as long as the system is there |
| Prove the insurance | Provide the association with the corresponding certificate of insurance within 14 days of approval and annually thereafter | Every year, indefinitely |
| Pay for damage | Responsible for damage to the common area, exclusive use common area, or separate interests resulting from the installation, maintenance, repair, removal or replacement | Ongoing |
| Maintain, repair and replace | Responsible for maintenance, repair and replacement until the system is removed | Until removal |
| Restore afterwards | Responsible for restoring the common area after removal | On removal |
| Disclose to buyers | Disclose to prospective buyers the existence of the system and the related responsibilities under the section | At every sale |
From the California statute governing requests to install on a shared multifamily common area roof, read 3 September 2026.
The obligations are drafted to bind each successive owner, not just the person who installed. That is what makes the disclosure duty in the last row load-bearing rather than a formality: the person buying your unit is taking on an annual insurance certificate obligation and an open-ended repair liability for equipment on a roof they do not own.
The obligations follow the unit, which is the part people miss when they sell
The statute writes the duties as running to "the owner and each successive owner". They are not personal to the installer. They attach to whoever owns the unit.
So a buyer is inheriting a maintenance and insurance obligation for equipment on common property. They must carry homeowner liability coverage at all times, produce a certificate to the association annually, remain responsible for damage to the common area and to other owners' separate interests, maintain and repair the system until it is removed, and restore the common area when it goes.
The statute anticipates exactly this and requires disclosure to prospective buyers, of both the system's existence and the responsibilities that come with it. That duty is not a courtesy. It is the mechanism by which the chain of obligation survives a sale without ambushing the next owner.
If you are buying a condominium unit that has panels on the shared roof, this is the question to ask before anything else: what obligations come with it, and where are they written. We cover the wider version of that question for detached houses separately, but the condominium version is worse, because the equipment is on property you will not own.
Florida solves the opposite problem: the board acting alone
California's machinery is built for an individual owner who wants panels. Florida built something for the association instead, and the two should not be confused.
The Florida provision says that, notwithstanding the rest of the section or the governing documents of the condominium, the board of administration may, "without any requirement for approval of the unit owners", install solar collectors, clotheslines or other energy-efficient devices based on renewable resources upon or within the common elements or association property, for the benefit of the unit owners.
Its force is only visible against the rule it displaces. The default in the same section is that there shall be no material alteration or substantial additions to the common elements except in a manner provided in the declaration, and where the declaration does not specify a procedure, 75 percent of the total voting interests must approve before the work commences. Getting three quarters of an association to vote for anything is the reason many common-element projects never happen. The solar provision removes that requirement entirely.
Two cautions have to travel with this, and the first one matters most. The provision is permissive for the board, not a right for you. It says the board may install. It does not let an individual unit owner put panels on the common roof, and reading it as though it did is the most common error made about it. An individual owner's protection in Florida runs through a different statute, which reaches installation within the boundaries of a condominium unit and expressly does not apply to patio railings in condominiums, cooperatives or apartments.
The second caution is context. Florida applies the same "not a material alteration, no owner vote" logic to electric vehicle charging and to hurricane protection in adjacent provisions of the same section. The solar provision is one instance of a pattern in how Florida handles common-element improvements, not a special carve-out reflecting a particular enthusiasm for solar.
What follows practically is that in Florida the productive conversation is with the board, not against it. If you want solar on the building, the route that exists is persuading a board that already has the power to act, rather than asserting a right you do not have.
The two mechanisms compared, because they answer different questions
| Question | California | Florida |
|---|---|---|
| Can an individual owner install on the shared roof? | Protected, through the access provisions, operationalised by the survey section | Not addressed for the common roof. The owner protection reaches only within the unit's boundaries |
| Is a members' vote required? | No. The 67 percent exclusive-use vote is disapplied and the association is separately barred from requiring a vote | Not applicable to an owner installation, because there is no owner right to vote on |
| Can the association or board install? | The association may restrict common-area installations to those it approves | Yes, with no unit-owner approval at all, against a 75 percent default for material alterations |
| Is the roof area allocated among owners? | Yes. The survey must determine an equitable allocation among all owners sharing the roof, garage or carport | Not found |
| Is the electrical output allocated among units? | Not found | Not found. The board installs "for the benefit of the unit owners" and the statute does not say how that benefit is divided |
| Who carries the insurance? | The owner, at all times, with an annual certificate to the association | Not addressed in the provision read |
From the statutory text of both states, read 3 September 2026. Two states only, chosen because they are the two that legislated mechanisms rather than merely permitting or prohibiting.
The two states are not competing answers to one question. California built a route for the individual owner and had to solve allocation to make it work. Florida built a route for the board and never had to, because a board installing one system for the building does not divide the roof at all.
The gap: nothing we read says how the electricity is shared
California allocates roof area. It does not allocate output. That works because each owner installs their own system on their own allocated area and the electricity goes to their own unit.
Florida's board installs a system "for the benefit of the unit owners" and the statute is silent on what that means in practice. Equal shares? Proportional to ownership interest? Applied against the association's own common-element electricity consumption, such as lifts, corridor lighting and pumps, rather than to units at all? All three are plausible readings of "for the benefit of the unit owners" and the provision does not choose.
This is a real gap, not an oversight we can fill. If your board is considering installing a common-element system, the division of the benefit has to be settled by the association, in its own documents, before the system exists. There is no statutory default to fall back on and no case we can point you to.
The most likely honest answer in many buildings is that a board-installed system offsets common-element consumption, which is simple to meter and requires no allocation at all. But that is our reasoning about how the practical problem gets solved, not something any statute we read says, and we are labelling it as ours.
The terms, because the wrong one sends you to the wrong statute
- Common element
- The parts of the property owned collectively rather than by an individual owner. A condominium roof usually is one, which is why most solar access statutes stop at it and why the mechanisms on this page exist at all.
- Exclusive use common area
- Common area assigned to the exclusive use of one owner, such as an allocated balcony, garage or parking space. Granting it normally requires a supermajority vote, which is the requirement California disapplied for solar.
- Separate interest
- The unit an owner actually owns, as opposed to the common elements they own a share of. Both California's vote threshold and Florida's alteration threshold are counted in these.
- Material alteration
- A change to the common elements substantial enough to require owner approval. Florida's default is 75 percent of total voting interests where the declaration sets no procedure, and the solar provision sits outside it.
- Usable solar roof area
- The statutory concept the California survey has to determine. Not the whole roof: the part that can actually carry a system, which is what makes the allocation meaningful and contested.
- Equitable allocation
- The share of usable roof area assigned to each owner sharing the roof, garage or carport. Required by statute, with no definition of what makes an allocation equitable. This is the single most consequential undefined term on this page.
- Declaration
- The recorded document that creates the condominium and defines what is a unit and what is common. It is where the ownership question is actually answered, and it governs where a statute leaves a gap.
What to do, in order
- 1 Read your declaration to find out what you own
Before any statute matters, establish whether the roof above you is common element, limited common element assigned to your unit, or part of your unit. That is a document question, and it determines which of the routes on this page is even relevant to you.
- 2 Establish whether your state protects an owner or gives the board the power
These are different mechanisms leading to different conversations. If your state gives an individual owner a route, you are making an application. If it gives the board a power, you are making a case to the board.
- 3 Ask whether anyone in the building has applied before you
If a survey has already allocated the usable roof area, your share may already be determined. Ask for the document, and ask what standard of equity it applied.
- 4 Get the allocation standard agreed before commissioning the survey
Equal area, equal generating potential, proportional to ownership interest and proportional to consumption produce materially different results on a roof with more than one aspect. The statute requires an equitable allocation and does not define equitable.
- 5 Budget the survey separately from the system
Its cost is carved out of the cost tolerance that would otherwise limit what the association can impose on you. Treat it as a real, uncapped line item.
- 6 Price the insurance obligation, not just the equipment
You must carry homeowner liability coverage at all times and produce a certificate to the association within 14 days of approval and annually thereafter. Ask your insurer what that costs before you commit.
- 7 Read the ongoing liabilities as though you were the buyer
Damage to the common area and to other owners' units, maintenance and repair until removal, and restoration afterwards. These bind each successive owner, so they are part of what you are selling as well as what you are buying.
- 8 If the board is installing rather than you, settle the benefit division in writing first
No statute we read allocates the output of a common-element system among units. That has to be decided by the association, in its own documents, before the system is built rather than after the first bill arrives.
What we could not verify
What "equitable allocation" means. The statute requires one and does not define it. We found no definition, no standard and no guidance, and we are not going to invent one.
How output from a board-installed common-element system is divided. Neither statute addresses it. Our suggestion that offsetting common-element consumption is the likely practical answer is our reasoning, labelled as ours.
Anything about states not named here. This page covers two states, chosen because they legislated mechanisms rather than simply permitting or prohibiting. Our wider survey of access statutes covers more, and several states there expressly allow an association to prohibit common-area installations outright.
How any of this interacts with your declaration. Statutes set the floor. The declaration is the document that defines what you own, and we have not read yours.
Whether an association's insurance treats a shared-roof array the way the statute assumes. The statute requires the owner to carry homeowner liability coverage. Whether a given policy will write it, and on what terms, is an insurer question we cannot answer from statutory text.
Method and limitations
What was read
The California Civil Code section governing association review of a request to install a solar energy system on a multifamily common area roof shared by more than one homeowner, in full: the notification and insurance requirements, the solar site survey requirement including its preparer qualifications and its exclusion from the statutory cost calculation, the equitable allocation requirement, the ongoing owner obligations binding each successive owner, the disclosure duty to prospective buyers, and the savings clause preserving the association's authority to impose reasonable provisions.
The California Civil Code section requiring a 67 percent affirmative vote of separate interests before granting exclusive use of common area, and the enumerated exception for installing and using a solar energy system on the common area roof of a residence.
The Florida Statutes section on condominium alterations and improvements: the provision permitting the board to install solar collectors and other renewable energy devices on the common elements without unit-owner approval, and the default material-alteration provision requiring 75 percent of total voting interests absent a declaration procedure, read together so the force of the first is visible.
What that limits
Two states. This is not a national survey of condominium solar law and must not be read as one. Our separate survey of state access statutes covers eight states and records that several expressly permit an association to prohibit common-area installations.
Statutes only. No association declaration, no regulation, no commission guidance and no case law was read, and the undefined terms in the statutes are exactly where those sources would matter most.
No insurance policy wording was examined, so nothing here tells you whether the coverage the statute requires is readily available or what it costs.
Questions
Who decides how much of a shared condominium roof I get?
Does my association have to hold a vote?
Can a condominium board install solar without asking the owners?
Can I put panels on the common roof of my Florida condominium myself?
What insurance do I have to carry?
What happens to the obligations when I sell my unit?
Who pays for the solar site survey?
If the board installs a system, who gets the electricity?
What if I am not the first owner in my building to apply?
Does the association still get to review my application?
Written and audited by
HyreSolar Research
Primary-source research, data analysis and fact checking
We are a research desk, not a sales floor. We read the statute, the tariff, the code section, the federal filing or the manufacturer data sheet ourselves, and we publish the figure with the document it came from and the date we retrieved it. Where a number cannot be traced to a primary source, we publish the shorter page and say what we could not verify. That rule has cost us whole sections, and it is the reason the rest can be trusted.
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- primary sources read and cited
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- figures with a retrieval date
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- federal and state government sources
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- researched pages published
How this desk works
- Primary sources only. Statutes from the legislature’s own publishing system, federal data from the agency that collects it, code text from the adopted edition, manufacturer claims from the data sheet. We do not cite an article that cites a source; we go and read the source.
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Data as of Statutory text read on 3 September 2026. Authorship on this site is organisational: the analysis belongs to the desk rather than to a named individual, and we do not publish credentials we do not hold. Our editorial policy sets out how we source, date and correct what we publish.
Sources & retrieval dates
- California Civil Code section 4746, solar energy systems on multifamily common area roofs — Source for the scope of the section covering review of a request to install on a multifamily common area roof shared by more than one homeowner, for the requirement to notify each owner of a unit in the building on which the installation will be located, for the requirement that the owner and each successive owner maintain a homeowner liability coverage policy at all times and provide the association with a certificate of insurance within 14 days of approval and annually thereafter, for the solar site survey requirement including its preparation by a licensed contractor or the contractor registered salesperson and its purpose of determining usable solar roof area, for the provision that the survey or the costs to determine usable space are not deemed part of the cost of the system for the purposes of the cost calculation in the access statute, for the requirement that the survey include a determination of an equitable allocation of the usable solar roof area among all owners sharing the same roof, garage or carport, for the ongoing owner obligations covering damage, maintenance, repair, replacement and restoration, for the duty to disclose the system and its related responsibilities to prospective buyers, and for the savings clause preserving the association authority to impose reasonable provisions. Added by Chapter 818 of the Statutes of 2017, effective 1 January 2018. Retrieved 3 September 2026.
- California Civil Code section 4600, grants of exclusive use of common area — Source for the default requirement of an affirmative vote of members owning at least 67 percent of the separate interests before a board may grant exclusive use of common area to a member, and for the enumerated exception permitting a grant to install and use a solar energy system on the common area roof of a residence meeting the requirements of the access sections and, where applicable, the survey section. Amended by Chapter 818 of the Statutes of 2017, effective 1 January 2018. Retrieved 3 September 2026.
- Florida Statutes section 718.113, condominium alterations and improvements — Source for the provision that, notwithstanding the section or the governing documents of a condominium or multicondominium association, the board of administration may without any requirement for approval of the unit owners install upon or within the common elements or association property solar collectors, clotheslines or other energy-efficient devices based on renewable resources for the benefit of the unit owners, and for the default material alteration provision requiring that where the declaration does not specify a procedure for approval, 75 percent of the total voting interests must approve alterations or substantial additions to the common elements before they are commenced. Read in the 2024 edition. Retrieved 3 September 2026.
Trying to get solar onto a shared roof?
Tell us what your declaration says about the roof and whether anyone in your building has applied before. We will tell you which mechanism applies and what to settle before you commission anything.
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