How Property Taxes Work on New Construction in Florida

Why Is My First-Year Tax Bill So Low on New Construction?

This catches almost every new-construction buyer off guard. You close on a $400,000 home, and your first property tax bill is $2,000. You think Florida taxes are amazing. Then year two arrives and it is $8,000.

Here is why. In Florida, the county property appraiser assesses property values as of January 1 each year. If your home was still under construction on January 1, the appraiser assessed only the land value, or the land plus whatever portion of the structure was complete at that point. According to Florida Statute 193.023, the property appraiser must assess property at its "just value" (fair market value) as of the January 1 assessment date.

That means your first tax bill reflects a fraction of your home's actual value. The completed home is not fully assessed until the next January 1, and that higher assessment shows up on your tax bill the following November.

That is a $475 per month increase in your escrow payment. If you budgeted based on the year-one number, this is a painful surprise.

What Is Escrow Shock and How Do I Avoid It?

Escrow shock happens when your lender adjusts your monthly mortgage payment to account for the higher property taxes in year two. Your lender collects taxes through your escrow account. When the tax bill jumps, the lender recalculates your monthly payment to cover the higher amount — plus any shortfall from year one.

The typical escrow shock on a Tampa Bay new-construction home adds $300 to $500 per month to your mortgage payment. Some buyers see even larger increases if the builder underestimated the tax projection at closing.

How Does the Save Our Homes Cap Work on New Construction?

Save Our Homes is one of the most valuable property tax protections in Florida. Established by Amendment 10 to the Florida Constitution (Article VII, Section 4), it limits annual increases in the assessed value of homesteaded properties to 3% or the Consumer Price Index (CPI), whichever is lower.

However, there is a critical timing issue for new construction buyers. Save Our Homes protection does not kick in until after your first full assessment. Here is the sequence.

1. Year 1: You close on the home. The property appraiser has a partial or land-only assessment. Taxes are low.
2. Year 2: The appraiser reassesses at full market value. Taxes jump. You have homestead exemption (if you filed on time), but Save Our Homes has not started yet.
3. Year 3 and beyond: Save Our Homes cap applies. Your assessed value can only increase by 3% or CPI per year, regardless of how much market values increase. This is where the real protection begins.

Over time, the Save Our Homes cap creates a growing gap between your assessed value and your home's market value. A home purchased for $400,000 might be worth $550,000 ten years later, but its assessed value might only be $470,000 thanks to the 3% annual cap. That gap represents significant tax savings.

How Do I File for Homestead Exemption on New Construction?

Homestead exemption in Florida reduces your assessed value by up to $50,000, which saves you approximately $900 to $1,100 per year in property taxes depending on your county's millage rate. According to Florida Statute 196.031, every Florida resident who owns and occupies their home as a primary residence qualifies.

The $50,000 homestead exemption is split into two parts: the first $25,000 applies to all taxing authorities. The second $25,000 applies only to non-school taxes and only on assessed values between $50,000 and $75,000. The net effect is a reduction in your tax bill of roughly $900 to $1,100 per year in Tampa Bay.

How Do I Calculate My Real Property Tax Bill Before Closing?

Do not rely on the builder's tax estimate. Builders often base their projections on the land-only assessment or on the county's current millage rate without accounting for special taxing districts. Here is how to calculate a realistic number yourself.

This is the number you should budget for — not the first-year tax bill. Compare this to the builder's estimate on the sales sheet. If there is a significant gap, ask your agent to walk through the math with you.

How Do Millage Rates Vary Across Tampa Bay Counties?

Millage rates vary significantly across Tampa Bay's eight counties and between incorporated cities and unincorporated areas within each county. The total millage rate includes county, city (if applicable), school district, water management district, and any other special districts.

As of the 2025 tax year, total millage rates in Tampa Bay range from approximately 17 mills to 23 mills depending on location. A mill is $1 of tax per $1,000 of taxable value. On a $400,000 home with homestead exemption, the difference between a 17-mill area and a 23-mill area is approximately $2,250 per year in property taxes.

This is why two new-construction homes at the same price in different parts of Tampa Bay can have very different property tax bills. Your buyer's agent should compare total tax obligations, not just home prices, when you are evaluating communities across multiple counties.

How Do Property Taxes on New Construction Compare to Existing Homes?

This is an important factor in the new construction versus existing home decision. Existing homeowners who have lived in their homes for years benefit from the Save Our Homes cap, which means their assessed value is often significantly below market value.

When you buy that home from them, the property is reassessed at your purchase price. So buying an existing home does not automatically mean lower taxes — you start fresh at whatever you pay. The same is true for new construction.

The key difference is that new-construction communities typically have CDD assessments that add $1,500 to $5,000 per year on top of ad-valorem property taxes. Most existing homes in established neighborhoods do not have CDD fees. Factor this into your total cost comparison.

What Are the Most Common Property Tax Mistakes New-Construction Buyers Make?

1. Budgeting based on the builder's tax estimate. Builders often use the land-only assessment or an outdated millage rate. Always calculate taxes yourself using the full purchase price and current millage rates.
2. Forgetting to file for homestead exemption. Missing the March 1 deadline costs you $900 to $1,100 in tax savings for that year. Set a calendar reminder for January 2 of the year after closing.
3. Not accounting for the CDD on top of property taxes. CDD fees are on the same tax bill but are separate from ad-valorem taxes. Many buyers only look at the ad-valorem portion and are surprised by the CDD assessment.
4. Ignoring the escrow shortfall. When your lender recalculates escrow after the year-two reassessment, you may owe a lump-sum shortfall payment plus higher monthly payments going forward. Budget for this in advance.
5. Not researching portability savings. If you are selling a homesteaded property in Florida to buy new construction, you can transfer your Save Our Homes benefit. This is worth thousands in annual savings and many buyers do not know about it.

Frequently Asked Questions About Property Taxes on New Construction

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