First, this is general information. If you really want to know for certain then call the Palm Beach county Planning & Zoning Department with your parcel ID and speak to the planner on call, then hire and engineer. Use this link to get the zoning information for your property and jot it down or print it out. Tired of dealing with Realtors who don’t know details like this? Call Chris at 561-626-8550.
ALL of Jupiter Farms is a ‘Rural’ Tier, AND outside of the Urban Services or ‘U/S Tier.’ Generally, lots with a house on them in Jupiter Farms are zoned AR. That’s an Agricultural Residential zoning district (which FYI includes it in the use restrictions generally noted as being for a ‘residentially zoned’ districts). The Future Land Use is Rural Residential 10, “RR 10” and note that Jupiter Farms is within the Jupiter Farms Neighborhood Plan.
In 2023 PB County changed the rules for Accessory Dwelling Units (ADU’s). For this discussion though the rules only changed slightly. A “conforming” lot in Jupiter Farms is 300’x300′ and 10 acres. MOST, but not all, lots in Jupiter Farms are still non conforming. What changed is Table 3.D.1.A…
And, the ever important foot notes…
Note that the typical Jupiter Farms lot IS going to be governed by footnote 3, and 2, for set backs as these lots do NOT meet the minimum for an AR zone with RR-10, or even RR-2.5 Future Land Use. They are “existing non-conforming” lots and this is what the information below assumes.
So let’s look at an example. A lot that it 165′ wide X 330′ deep. This is 1.25 Acres and thus an ‘existing non conforming’ lot for the AR (RR-10). The lot is less than even 200′ in width and thus does NOT meet the requirements of an AR (RR 2.5) lot being 300’x300′. Thus we use footnote 3 directs us to use footnote 2 for set backs…
But first we must check that we can do ANYTHING because there are max lot coverage requirements in the code. For our 1.25 acre lot let’s assume it has a descent sized 4,000 sf house on it. This is the total size of the building(s) (ALL BUILDINGS WITH A ROOF ON THEM) but would not include a pool or a screen enclosure, UNLESS it has a solid roof. But if you have other structures on your lot like a barn, pole barn, lien to, or anything with a solid roof then these WOULD BE ADDED to the 4,000 SF house roof number I am using.
Looking at Table 3.D.1.A again and we see that lot coverage must be less than 15%, so 0.15*165*330 = 8,167.5 sf. In this example we could have an accessory building that’s 8,167.5 – 4000 = 4,167.5 SF. A good sized barn but we want to know about ADU’s now that we know we have over 4k SF of have lot coverage to use!
Next. let’s walk through the set backs. Set backs are how far you must be from the respective property lines being front, rear and side. We are interested in “Accessory Quarters”…
So, we go back up to Table 3.D.1.A and footnote 3 again directs us to footnote 2…
BTW, footnote 4 is for buildings in the Urban Services Tier, which Jupiter Farms is NOT. Again, our example lot is 165’x330′. Thus the width is non conforming and so the side yard set back is 0.15*165=24.75′, say 25′. (33′ if there is a street along that side property line.) The depth is 330′ (>300′) and is thus it IS conforming for AR (RR 2.5 as per footnote 3 of Table 3.D.1.A) so the front yard set back is 50′ and the rear is 25′. The structure must ALSO be at least 5′ from any drainage easements. Generally these structures must be behind the front and side street yard set backs BUT there is a method spelled out to locate these CLOSER to those roadways. It’s very possible to put something in your front yard to share the existing driveway BUT…
Table 4.B.1.D shows us that for a Single Family “Primary Use” one MAY have “by right”, Permitted or P, the following: Accessory Quarters, an Estate Kitchen, or a Guest Cottage. Most folks reading this are looking to put in an “Accessory Quarter”, which is defined as:
Accessory Quarters
a. Definition
A complete, separate living facility equipped with a kitchen and provisions for sanitation and sleeping, located on the same lot as the owner-occupied principal dwelling.
b. Building Area
The use shall be subject to the following:
1) On less than one acre: a maximum of 800 square feet.
2) On one acre or more: a maximum of 1,000 square feet.
3) The floor area calculation shall include only the living area of the Accessory Quarters under a solid roof.
4) Additional floor area under a solid roof that is utilized as a porch, patio, porte-cochère, carport, or garage shall not exceed 500 square feet.
So, for our example one may have a 1,000 SF of air conditioned building space plus another 500 SF of non AC space (garage, patio) placed more than 25′ from the both the rear and side property lines.
An “Estate Kitchen” is “A second kitchen located within a principal Single Family, Zero Lot Line, or Farm Residence.”
A “Guest Cottage” is much like an Accessory Quarters BUT it is intended only for sleeping without a kitchen or separate utilities.
