"These walk among us," Athens-Clarke Planning Director Bruce Lonnee told commissioners this summer. He was talking about the secondary living spaces behind and below houses in Five Points, Normaltown and East Athens. He had a precise point. Guest houses have been allowed under the county zoning code for about 20 years, but they cannot have a fully functioning kitchen. "Presently, what we don't have is the ability of an accessory dwelling unit to be independent of the main house," he said.
On Aug. 4, 2026, the Athens-Clarke Mayor and Commission voted 7–3 against changing that. That vote is the most useful fact for anyone looking at an Athens listing that mentions an "in-law suite," a "guest cottage," a "basement apartment" or "income potential." The listing label describes how the space looks. The county code decides what the space is allowed to do, and the two don't always match.
What the August vote actually kept in place
The proposal was narrow. It would have allowed full kitchens with ovens and stoves in basement, backyard and garage apartments. That would have made them suitable for full-time living rather than guest stays or short-term rentals. County Manager Bob Cowell described the staff proposal in July as "simply to change the definition of guest house. That's it." Commissioners Melissa Link, Carol Myers and Patrick Davenport voted to keep the idea alive. The rest of the commission ended it outright.
So the existing rule stands. The county's own amendment document shows the language that was up for change. A guest house is a detached accessory structure that "may include sleeping and toilet facilities," and it may be maintained "provided there are no kitchen cooking facilities." The same document defines a dwelling unit as a space with "independent cooking, sleeping and toilet facilities." The kitchen is the legal line between a guest house and a home.
The same amendment document lists one secondary unit per lot, a 1,000-square-foot cap, and fewer bedrooms than the main house. Because that text is a proposal, it doesn't confirm which of those limits are in force today. Planning can tell you which size and unit-count limits apply to a given lot.
What the space can and can't do
When you lay the guest-house rule beside the short-term rental ordinance, the uses of a secondary space in a single-family zone come down to a short list.
| Intended use | Where Athens-Clarke rules stand today |
|---|---|
| Family members or visiting guests | Allowed as a guest house with sleeping and bathroom facilities, but no cooking facilities |
| A self-contained apartment with its own stove and oven | The August 2026 proposal that would have allowed this was rejected 7–3 |
| Short-term guests, stays under 31 consecutive days | Possible as a home-occupation STR, which requires the owner or primary resident to live on the property |
| Short-term rental with no one living on site | Commercial STRs are prohibited in RS single-family zones |
| Continuing a seller's grandfathered STR | Under Athens-Clarke's STR ordinance, legal non-conforming status becomes void when the parcel is sold |
The short-term rental row is the one most likely to come up in a listing conversation. Athens-Clarke defines a short-term rental as a dwelling rented for "any period of time less than thirty-one (31) consecutive days." The ordinance sets up two categories. A commercial STR is rented by someone other than an owner-occupant or primary resident. A home-occupation STR is rented by the person who lives there and requires a home-occupation permit. In the RS single-family zones, the use table lists commercial STRs as prohibited and home occupations as permitted.
The home-occupation path does reach the guest house. The county's application lets an applicant choose either "Primary Residence" or "Accessory Structure," but only one structure on a parcel can operate as an STR at a time. The application fee is $20. After Planning approval, the county's process also requires a Business Occupation Tax certificate, proof of Hotel/Motel Excise Tax payment, and an upload to the STR Portal.
Taken together, a guest house in a single-family zone can earn short-term income only if the person earning it lives on the property. It is not a separate rental property.
Long-term rental is less clear. Flagpole noted that "Nothing currently prevents rentals in single-family neighborhoods," which is true of houses. Nothing in the guest-house rules establishes that a kitchen-free accessory structure can be leased out as its own independent home. The commission just declined to create that use, and that was the point of the vote.
Why this matters more now than it did in spring
Buyers have more listings to compare this fall. According to Georgia MLS figures for Clarke County, active residential listings rose from 425 in August 2026 to 458 in September 2026. New listings went from 150 to 163 over the same two months. The median sale price eased from $367,000 in August to $360,000 in September, while closed sales rose from 78 to 85.
That one-month change is modest, but it shifts the comparison. Two similarly priced houses may differ mainly in that one has a finished space out back. If the price gap between them assumes that space will pay rent like a second unit, the gap rests on a use the county just declined to permit. What the space can support is extra room for the household, guest quarters, or short-term income for an owner who lives there. Those are real benefits, and they are the ones to price.
A finished basement with a kitchenette, or a garage apartment with a range, may well exist on an older lot. Lonnee's own remark suggests that secondary spaces are common around town. A space existing is not proof that it is permitted. The stove is the feature to ask about first, because it's the feature the code addresses.
A seller's rental history ends at closing
The second mismatch between a listing and the law involves short-term rental history. Some properties, including some in single-family zones, ran as short-term rentals before Athens-Clarke adopted its ordinance on Feb. 6, 2024. The county published a Legal Non-Conforming STR List of properties that operated as STRs in the 12 months before Sept. 19, 2023. Those properties may keep operating for a set period.
The code is direct about what happens at a sale. "In the event of the sale or other conveyance of the parcel at any time after the effective date of this section 9-15-28, the legal non-conforming use shall be null and void." The status also ends if the use is abandoned for 12 consecutive months. When the owner is an LLC or partnership, a transfer of 30 percent or more of the ownership interest counts as a conveyance. A booking calendar, a guest-review history or a strong past-revenue report cannot carry over to the buyer.
How long existing non-conforming STRs may continue is less settled. A county ordinance document extends the period to 60 months from March 1, 2025. A 2026 Red & Black report gives a 24-month window ending in March 2027. For a buyer, that question matters less than the sale provision, which is the same under either version.
The ordinance also faces a court challenge. In 2024, a group of STR owners sued the county, raising open-meetings and property-rights claims. In April 2026, the county's Government Operations Committee voted to take no further action on STR changes until the Georgia Supreme Court rules. That ruling was expected early next year. A purchase plan that depends on rental income should assume these rules can still change.
The small-house rule moved the other way
The same August meeting loosened a different rule. Commissioners voted unanimously to drop the county's minimum home sizes, which had required 1,000 square feet in most single-family zones, smaller minimums in denser zones, and 450 square feet for apartments. The new standard is the International Property Maintenance Code's minimum room sizes. Lonnee said the IPMC offers "far more latitude" on overall size, and he cited a recent court ruling in Calhoun suggesting that arbitrary minimums like Athens-Clarke's could be illegal.
Flagpole summed up the majority's position this way: tiny homes are not acceptable in a backyard, but they are fine on their own lot. For a buyer who wants a separate small home for a relative or for income, the commission has signaled that the path runs through a separate parcel rather than a converted garage. If that's the goal, a small lot may be worth comparing against a house with a guest cottage. Builders and county staff can confirm when and how the new size standard applies to a specific project.
Questions to ask before you write an offer
Bring these to the listing agent, the seller's disclosures, and Athens-Clarke Planning:
- Does the secondary space have a stove, oven or range? If so, when was it installed, and was it permitted?
- Is the space recorded with the county as a guest house, part of the main house, or something else?
- Has the property operated as a short-term rental? If so, under a home-occupation permit or as a legal non-conforming commercial STR?
- If it is on the Legal Non-Conforming STR List, have you accounted for that status ending at closing?
- Will you live on the property? A home-occupation STR depends on it.
- Does your offer price assume income that only a full second dwelling unit could produce?
None of this is legal advice. Athens-Clarke Planning is the authority on the permit status of any specific parcel.
A few quick answers
Can I add a kitchen to a guest house after I buy? Under current Athens-Clarke rules, a guest house may not include cooking facilities. The Aug. 4, 2026 proposal to allow stoves and ovens in these spaces was rejected.
Can I rent the guest house on a short-term basis while I live in the main house? The county's home-occupation STR application allows the accessory structure to be the rental, as long as the owner or primary resident lives on the parcel and only one structure is used as an STR at a time.
Did other cities see a wave of these units after loosening their rules? Mayor Kelly Girtz pointed to Gainesville, Florida, which he said has issued only 42 ADU permits in the six years since it relaxed its regulations.
If you're weighing an Athens home with a guest cottage, basement suite or rental history, J Brand Realty can help you separate what the space adds to your household from what the listing implies it will earn. Request a Property Valuation & Consultation, and we'll go through that property's questions with you before you set a price.
