Clay County generally allows one dwelling per deeded parcel. That single sentence undoes a lot of plans people have for their land, and it comes up constantly when somebody wants to sell a house on land in Orange Park with more than one thing living on it.
The county also does not permit an RV to be used as a primary or weekend residence. I get asked about that one more than almost anything else, usually by somebody who already has a relative parked out back.
Here’s how it actually plays out.
What counts as a second dwelling
More than people expect. A second manufactured home. A garage with a kitchen and a bathroom in it. A converted outbuilding somebody’s been living in since 2016. A mother-in-law suite with its own entrance and its own meter.
The test isn’t whether it looks like a house. It’s whether it functions as an independent living unit, and cooking facilities plus a bathroom plus sleeping space is usually enough to make it one in the county’s eyes.
Accessory dwelling units have their own specific requirements, so it’s not that a second unit is impossible. It’s that there’s a defined path and most of these were built without going down it. The county’s planning FAQ is the place to start.
Why a buyer’s lender cares
An appraiser working a financed purchase compares what’s on the ground against what’s on the record. When your parcel has a house, a mobile home, and a converted shed with a shower in it, and the record shows one single-family residence, that mismatch has to get resolved.
Sometimes it comes back as a value adjustment. Sometimes it comes back as a condition the lender requires be fixed before closing, which can mean removing or decommissioning the extra unit. Neither of those is a conversation you want at week five.
Insurance behaves the same way. A carrier writing a policy on a property with unpermitted living space can decline to cover that portion, and no binder means no loan.
The RV question specifically
People have someone living in an RV on their property all over this county. Sometimes it’s family after a divorce, sometimes it’s a caretaker, sometimes it’s just where things landed.
The county doesn’t allow it as a residence. Which means when you go to sell, a buyer’s due diligence may turn it up, and it becomes a compliance problem attached to your parcel rather than a private arrangement.
I keep an RV myself and I’ve been through 19 national parks with it, so I understand the appeal better than most. There’s a real difference between using one and living in one on a lot that isn’t zoned for it, and the county draws that line clearly.
What it does to the value of the land
Sellers usually assume an extra unit adds value. Sometimes it does, to the right buyer. Often it does the opposite, and it’s worth understanding why.
A buyer paying cash who wants the rental income will pay for a second unit. A buyer using a mortgage is being told by their lender that the property is a single-family residence with a nonconforming structure on it, and that structure is a liability to resolve rather than income to count. Two buyers, same property, opposite conclusions.
Which means the extra unit narrows your pool to the first kind of buyer. That’s not automatically bad, it’s just the opposite of what most people expect when they add a second dwelling and assume they’ve increased what the place is worth.
Common questions
Can I just sell it as-is and let the buyer deal with it?
To a cash buyer, mostly yes. To a financed buyer, mostly no, because their lender and their insurer are the ones who have to be satisfied and neither of them is flexible about it.
You also can’t leave it out of the disclosure. Florida expects a seller to disclose known material defects that aren’t readily observable, and a nonconforming dwelling on the parcel qualifies once you know about it.
What if the extra unit has been there for decades?
Long-standing doesn’t automatically mean legal, though it sometimes means grandfathered. There’s a real distinction between a legally nonconforming use that predates a rule and a use that was never permitted at all. The county can tell you which one you have, and it’s worth asking before a buyer’s agent asks for you.
Does this affect a mobile home on family land?
It’s the most common version of the whole problem. Somebody wants to sell the old singlewide to a buyer who’d leave it in place while a new house goes up beside it. That plan usually doesn’t survive a call to the planning department. There’s more on that in how these work out toward the west side of the county.
What to do before you sell
Call the county and ask what’s permitted on your parcel, by parcel number. Then pull your record from the Clay County Property Appraiser and see what improvements are actually on file. The gap between those two answers is your problem list, and it’s better to have it in June than in the middle of a contract.
How to think about your options
Clean parcel, one dwelling, everything permitted? Normal situation, weigh both paths on the numbers. Going the traditional route shows a higher figure on the sign, then commission comes off both sides, the inspection takes its bite, and you pay for the house every month it sits.
Extra unit, RV, converted outbuilding, or a second manufactured home on the parcel? Understand what you’re up against. You’re not just selling a house, you’re asking a lender, an appraiser, and an insurer to all get comfortable with a nonconforming property. Each one can say no independently, and a deal that dies at week five puts you back on the market looking like you have something to hide.
We Buy Houses Orange Park buys parcels with extra dwellings, unpermitted conversions, and the occasional RV somebody’s been living in for six years. There’s no appraiser comparing against a record and no underwriter to satisfy, so the thing that stops everybody else isn’t in the way. It won’t beat a clean retail sale on a clean parcel, and I’d tell you that. On a parcel with three things on it and one on the record, it’s frequently the only path that actually closes.
Josiah Murdaugh grew up in Orange Park and spent 11 years as a licensed real estate agent before he started buying houses directly. He has bought more than a hundred since. About We Buy Houses Orange Park.