Buying a Duplex on Florida's Space Coast: A Brevard County Guide

Can you buy a duplex with a low down payment in Brevard County, FL?

Yes. If you live in one unit, FHA allows two-to-four unit purchases up to $693,050 for a duplex in Brevard County in 2026, and Fannie Mae allows up to 95% financing on owner-occupied two-to-four unit homes.

Most people on Florida's Space Coast think of investment property as a separate thing you do after you own a house. Buy the primary residence first, build equity, then go looking for a rental. That is one path, and it is the slow one.

The other path is buying a two-unit building, living in one side, and renting the other. It is not exotic financing and it is not an investor product. Under federal loan rules, a duplex you live in is a primary residence, and it gets primary-residence terms. Brevard County has these buildings scattered through older parts of Melbourne, Cocoa Beach, and Rockledge, and most buyers never look at them because they assume the down payment is out of reach.

What counts as owner-occupied on a duplex?

You occupy one of the units as your principal residence. That is the whole test. The other unit can be rented from day one. Because the property is owner-occupied, it is underwritten as a primary residence rather than as an investment property, which changes the down payment, the rate structure, and the mortgage insurance treatment.

This matters enormously on the Space Coast, where the gap between primary-residence terms and investment-property terms is the difference between a purchase you can make and one you cannot.

How much can you borrow on a two-to-four unit in Brevard County?

Brevard County sits at FHA's national floor for 2026. The limits scale up sharply with unit count, published in HUD Mortgagee Letter 2025-23:

Units	2026 FHA limit in Brevard County
One	$541,287
Two	$693,050
Three	$837,700
Four	$1,041,125

Read that table again. FHA will lend roughly $152,000 more on a Brevard County duplex than on a single-family house, and roughly half a million more on a fourplex. That is not a rounding difference. It opens up buildings on the Space Coast that a single-family FHA borrower could never reach.

On the conventional side, Fannie Mae's eligibility matrix allows up to 95% loan-to-value on a two-to-four unit principal residence purchase. That is 5% down on a duplex. This is a meaningful change from the older rules that required 15% or more on multi-unit properties, and a lot of Brevard County buyers have not caught up to it. The current terms live in Fannie Mae's Eligibility Matrix.

The self-sufficiency test on three and four units

Here is the rule that stops most Space Coast fourplex purchases, and almost nobody knows about it until they are already emotionally attached to a building.

For FHA loans on three and four unit properties, the net rental income has to be equal to or greater than the projected monthly mortgage payment including taxes and insurance. In plain terms, the building has to carry itself on rent alone. If it does not, FHA will not insure the loan, no matter how strong your income is.

Duplexes are exempt from this test. That is a large part of why two-unit buildings are the realistic entry point on the Space Coast, and why a Melbourne or Rockledge duplex is a far more financeable purchase than a fourplex at the same price per unit. HUD's full rental income policy sits in the Single Family Housing Policy Handbook 4000.1.

What about property taxes and homestead?

Florida's homestead exemption applies to the portion of the property you actually occupy. On a duplex where you live in one of two equal units, you are generally looking at the exemption applying to your half, not the whole building. The rented side is assessed without it.

That has a second consequence worth understanding: the Save Our Homes assessment cap that protects Florida homeowners from large annual increases also tracks the homesteaded portion. The rental portion of a Brevard County duplex is subject to the non-homestead cap instead. Before you write an offer, pull the parcel on the Brevard County Property Appraiser's site and look at how the property is currently assessed and classified. I walk through that process in how to look up a home's records on BCPAO.

Where are the duplexes on the Space Coast?

Brevard County is not a dense-multifamily market. Most of the county is single-family subdivisions, and two-to-four unit buildings are concentrated in the older, pre-1980 pockets rather than in newer areas like Viera or Suntree.

Practically, the inventory shows up in and around older Melbourne, in Cocoa Beach where small multi-unit buildings were built for seasonal use, and scattered through Rockledge and parts of Merritt Island. Zoning is the constraint. A lot that looks large enough for a second unit frequently is not zoned for one, and Brevard County zoning designations control both what exists and what you could add later.

Two things to confirm before you get attached to a building: the zoning designation on the parcel, and whether every unit was permitted. An unpermitted second unit is a common problem on older Space Coast properties, and it can make the building unfinanceable as a duplex even though two families are living in it right now.

Frequently Asked Questions

Can I count the rental income to qualify for the loan?

Generally yes, with limits. Lenders typically apply a vacancy factor to the appraiser's market rent estimate rather than using gross rent, and requirements differ between FHA and conventional financing. If you have no landlord history, expect more scrutiny. Get a specific answer from your lender before you write an offer on a Brevard County duplex, because the qualifying number drives your price range.

Do I have to keep living there?

Owner-occupancy requirements are tied to the loan, and the standard expectation is that you occupy the unit as your principal residence for at least the first year. After that, many Space Coast buyers move out, rent both sides, and repeat the process on a second building. Confirm your specific occupancy terms in your loan documents.

Is short-term renting the other unit allowed?

That depends entirely on the city. Short-term rental rules on the Space Coast vary sharply between Cocoa Beach, Melbourne, Satellite Beach, and unincorporated Brevard County, and some areas restrict rentals under a set number of days. Never assume a duplex can be operated as a nightly rental. Verify the specific municipal rules for that address before you close.

Thinking about a Space Coast duplex?

Buying a two-unit building in Brevard County is one of the few strategies that lets you own real estate here and reduce your own housing cost at the same time. The inventory is thin and it moves quietly, so knowing what to look for matters more than in the single-family market. I am glad to help you figure out whether the numbers work on a specific building before you spend anything on inspections.

My partner Nichole and I got your back. Reach out anytime at (321) 212-7676 or www.livingspacecoast.com.