New construction or resale: which is the better buy for an investor in Cumming?

A Cumming rental comes down to two numbers, and neither one is the asking price. The first is what the property tax bill looks like after the house is finished rather than while it is being built. The second is what a seller or a builder will actually give you in a market that has slowed down. I’d slow down too, long enough to get both right, because this is the comparison where a buyer most often underwrites a number that was never going to last.

Why is the tax bill during construction not the bill you will live with?

Because Georgia values property as of a single day, based on what was standing there that day. Counties establish a value as of January 1 each year, and property is assessed at 40% of fair market value. For a house still going up, the state’s Appraisal Procedures Manual tells assessors to appraise land separately from improvements, then value a house under construction at its estimated fair market value upon completion multiplied by the percentage finished on January 1.

So the land counts in full from the start and the house phases in. A parcel that was bare ground on January 1 is taxed as ground. One with a half-built house on it is taxed on the land plus roughly half the house. Only after the finished home is standing on a January 1 does the bill reflect the whole property.

That is not a loophole or a trick by the builder. It is how the calendar works. But it means the tax figure on your closing statement, and sometimes the figure in a builder’s payment worksheet, can be a number with a short life.

Here is the range, as a hypothetical. Assume a $600,000 finished home in Cumming on a lot worth $130,000, and Forsyth County’s adopted 2025 total of 24.522 mills, used purely as an illustration. This example assumes a non-owner-occupied investment property with no homestead exemption.

The spread from a bare lot to a finished house is about $384 a month. Even a house that was three-quarters built on January 1 is still about $96 a month short of the steady-state bill. Neither is a rounding error on a rental, and the gap closes in a later tax year, after you have signed a lease at a rent you set against the smaller number.

The fix is simple and takes one phone call. Ask the Forsyth County Board of Assessors what the tax would be at the completed value, not the current one, and underwrite on that. Confirm the current year’s millage while you have them, since rates move and the figure above is last year’s.

A resale is usually easier to estimate, because the completed house was already part of the January 1 assessment. Its assessed value can still change in a later tax year, but you are not waiting for a building to catch up with a tax bill.

What can you actually negotiate in Cumming right now, and from whom?

Both sides have room, and they give on different things. In the three months ending August 2026, Redfin reported a median Cumming sale price of $559,222, up 5.4% year over year, while homes took a median 107 days to sell against 58 days a year earlier. Homes sold at 97.9% of list and 39.9% had at least one price drop.

Read those together: prices have not collapsed, but buyers have more time and sellers have more competition. A market at 107 days is one where a resale seller who has been waiting since spring will listen to a number they would have dismissed then.

Builders behave differently. Builders often prefer incentives such as closing costs or financing help before making a large headline price reduction, especially when they still have other homes to sell in the community, because a price cut reprices everything left. That often means a rate buydown through their preferred lender. Those are worth real money, and they are worth checking rather than accepting, which is the same arithmetic I walked through in the price cut or rate buydown article: a buydown and a price cut can cost the same and do very different things depending on how long you hold the loan. An investor planning to hold for ten years should think hard before trading permanent price for two years of payment relief.

At a 30-year fixed average of 7.32% for the week ending October 22, 2026, here is how the two look side by side on the same hypothetical, 25% down, principal and interest plus steady-state tax:

The resale carries about $239 a month less. That is the gap the new build has to earn back through rent, lower repairs, or a better tenant experience. Sometimes it does. The point is to make it prove it.

Which one is less work to own?

New construction, in the early years, and that is worth money in a rental rather than just convenience. The roof, the HVAC and the water heater are the expensive failures in a rental, and on a new build they are new. A resale from the 1990s may need two of the three inside your first five years.

Two honest qualifications. The saving is a timing difference, not a permanent one: those systems age on the same schedule yours would, and the capital expense arrives later rather than never, so it belongs in your reserve budget either way. And a builder warranty is narrower and shorter than most buyers assume, so read what it covers before you treat it as insurance.

The other thing to check before you buy in a new community is whether you are allowed to rent at all. Some newer Forsyth County communities have rental restrictions, caps on how many homes can be leased at once, or ownership-period requirements before you can rent. A cap that is already full turns an investment into a second home. Get the covenants and the current rental count in writing from the HOA, not from the sales office.

So how should an investor decide?

Underwrite both on the steady-state tax number, then let the negotiation decide. That order matters. Most people compare the two deals first and discover the tax bill later, which is how a property that looked like it cleared becomes one that does not.

Practically, that means three things. Get the completed-value tax estimate from the county before you make an offer. Get the HOA rental cap and the current count in writing. Then compare the two homes on the same monthly number, including that tax figure, and see which one the rent actually covers.

If both clear, the tiebreaker is usually the one nobody puts in a spreadsheet: which house will be easier to rent again in year four, when the new community is no longer new and the resale neighborhood looks exactly as it does today.

One thing I pay attention to in Cumming is the commute. The farther north you go, the more GA-400 can affect which tenants will consider the property. That is why I treat rental demand here as a street-level question, not a citywide average. Check what comparable homes nearby actually rented for and how long they sat before you rely on a city figure. That applies to a new build and a resale alike, and it often matters more than the choice between them.

That is the kind of comparison I run for clients on the investors page before they write anything, and it is the same discipline behind the 1% rule article: the ratio on the listing is never the number that decides it. If you are weighing a specific build against a specific resale in Cumming, send me both addresses and I’ll run the real monthly on each before you make an offer.

Sources

• Georgia Department of Revenue, Property Tax FAQ: “Assessed value is 40% of the fair market value”; counties “are required to establish a value as of January 1 of each year” (O.C.G.A. 48-5-2, 48-5-6). dor.georgia.gov, accessed October 23, 2026.
• Georgia Appraisal Procedures Manual, Ga. Comp. R. & Regs. 560-11-10-.09: appraisal staff “appraise land separately from the improvements” (3)(a), and value construction in progress at “the estimated fair market value upon completion multiplied by the percentage of completion on January 1” (4)(d)(2); valuation reflects “the circumstances of such property on January 1 of the tax year.” rules.sos.ga.gov, accessed October 23, 2026.
• Forsyth County, adopted 2025 millage rates: total 24.522 mills including school levies. Used here as an illustration only; confirm the current year with the county. forsythco.com, accessed October 23, 2026.
• Redfin, Cumming GA housing market, three months ending August 2026: median sale price $559,222 (up 5.4% year over year), median 107 days on market (against 58 a year earlier), 97.9% sale-to-list, 39.9% of homes with a price drop. redfin.com, accessed October 23, 2026.
• Freddie Mac Primary Mortgage Market Survey, 30-year fixed-rate average 7.32% for the week ending October 22, 2026 (down from 7.40%). freddiemac.com/pmms, accessed October 23, 2026.
• Worked examples are hypothetical: a $600,000 finished home on a $130,000 lot (a $470,000 improvement phased in by percentage complete) and a $560,000 resale, both 25% down, 30-year fixed at 7.32%, Forsyth County 2025 total millage as an illustration, non-owner-occupied with no homestead exemption. Payments are principal, interest and property tax only.

This article is general information, not legal, tax or lending advice. Millage rates, assessment practice and HOA covenants change and vary by parcel; confirm your figures with the Forsyth County Board of Assessors, the HOA and your lender, and your tax position with a CPA.

— Jerry Cohen, Real Estate Investment Strategy. Talk to us.