By Derrick Henderson, President of Lifestyle Design Homes and a Florida Certified Building Contractor with more than 20 years in construction across Southwest Florida. Updated September 2026.
A custom home budget in Southwest Florida has six parts: the land, the site work, the costs before construction, the construction itself, the items priced outside the construction contract, and a contingency of about 5%. This guide goes through each one with the numbers we can give you today, including 2026 land prices in six cities and the current Collier County impact fees. It is written for buyers planning a custom home in Naples or elsewhere in Southwest Florida.
In this guide
- What a custom home budget includes
- What land costs in Southwest Florida
- Why a cheaper lot can cost more
- Costs before construction starts
- What the construction price includes
- Cost per square foot
- The choices that raise a budget most
- Where to save
- How much contingency to plan for
- Frequently asked questions
What does a custom home budget include?
A complete budget has six lines. The construction price is one of them, and it is the one most buyers ask about first.
| Budget line | What it covers | What to expect |
|---|---|---|
| Land | The homesite purchase | From about $15,000 in Lehigh Acres to several million on the water |
| Site work | Fill, clearing, drainage, utility runs, well and septic | Depends on the lot. Well and septic alone add roughly $20,000 to $40,000+ |
| Pre-construction | Design, survey, engineering, permitting, impact fees | Impact fees in Collier County are about $34,000 for a home under 4,000 sq ft |
| Construction | The home itself, built to the agreed scope and selections | Priced from the plans: size, structure, site, and finishes |
| Items priced separately | Pool and spa, landscaping, furnishings, generator, elevator | Depends on the project |
| Contingency | A reserve for unforeseen conditions and changes | About 5% of the project |
“Buyers spend a lot of time comparing base prices, but two homes with the same advertised price can have very different final costs. Understanding allowances, site costs, finishes, impact fees, and what is considered an upgrade is just as important as knowing the starting price.”
Derrick Henderson, President
What does land cost in Southwest Florida?
Land is the widest range in the budget. A standard lot in Lehigh Acres is listed around $15,000 to $40,000, an inland homesite in Naples around $100,000 to $300,000, and a Gulf-access homesite near Vanderbilt Beach around $4.5 million. The table shows general asking prices for vacant residential land in the six cities where we build most often.
| City | Standard homesites | Waterfront and premium |
|---|---|---|
| Naples | $100,000 to $300,000 inland and in Golden Gate Estates. Larger or more desirable parcels reach $300,000 to $500,000+ | Coastal and prime infill lots run well into the millions. Gulf-access homesites near Vanderbilt Beach are listed around $4.5 million |
| Marco Island | $200,000 to $750,000 | $1.4 million to $3 million+ for direct-access waterfront. Exceptional sites reach $5 million or more |
| Bonita Springs | $125,000 to $375,000 | About $825,000 to $3.5 million+, depending on location, frontage, and access |
| Estero | $275,000 to $750,000+ for homesites suited to a custom home. Smaller parcels can be found below $100,000 | Inventory is mixed, from small platted lots to large estate parcels |
| Fort Myers | $20,000 to $175,000. Larger or more desirable sites reach $200,000 to $500,000+ | Prime riverfront and infill property can exceed $1 million |
| Lehigh Acres | $15,000 to $40,000 for a standard quarter-acre lot | Not a waterfront market |
Ranges reflect general asking prices observed in the Southwest Florida market in 2026 and are subject to change.
See where we build across Southwest Florida for how each area differs in lot size, utilities, and review process.
Why can a cheaper lot cost more to build on?
Because the purchase price does not include what the lot needs before a home can go on it. A $30,000 homesite may need substantially more site development than a more expensive property that already has utilities, elevation, drainage, and access in place.
These are the conditions that change the cost of a lot in Southwest Florida: required elevation and fill, flood zone requirements, drainage, clearing, access for construction equipment, utility availability and long utility runs, well and septic, setbacks and lot geometry, association restrictions, seawall condition on waterfront property, and wetlands. Two lots that sell for similar prices can have very different development costs.
Where public water and sewer are not available, including Golden Gate Estates, Lehigh Acres, Alva, and Buckingham, a well and septic system together add roughly $20,000 to $40,000 or more. The cost depends on the property, the system design, the soil, and whether an enhanced treatment system is required.
There is no responsible single number for site work. A cleared infill lot with utilities at the street is a different project from land that needs fill, clearing, drainage work, and a long utility connection. That is why we review the lot before we treat the construction price as the whole budget. Here is what that review did for one client who brought us a property before buying it:
“Instead of looking only at the purchase price, we were able to show the client what the true cost of building on that property could look like before they committed to it. That conversation potentially saved them tens of thousands of dollars and, more importantly, kept them from buying a lot that didn’t make sense for what they wanted to build.”
Derrick Henderson, President
Our guide to building on your own lot covers what a site review should include.
What costs come before construction starts?
Before construction begins, a custom project pays for design, survey, engineering, site and soil information, permitting, impact fees, utility or well and septic coordination, association review where it applies, and pre-construction planning and estimating. The total depends on the homesite and on how customized the home is.
Impact fees are the one line here with a published price. As of May 1, 2026, Collier County impact fees for a new single-family home are:
| Living area | County fees | With county water and sewer |
|---|---|---|
| Under 4,000 sq ft | $23,763.97 | $34,051.97 |
| 4,000 sq ft or more | $26,535.95 | $36,823.95 |
Source: Collier County residential impact fee schedule, effective May 1, 2026. Totals do not include the fire district fee.
The water and sewer portion is $10,288 and applies to homes that connect to the county system. The fire district fee is added on top: $476 in North Collier for a home under 4,000 square feet, or $0.433 per square foot under roof in Greater Naples. The City of Naples and Marco Island set some of their own fees, and Lee County has its own schedule, so we confirm the figure for the specific address.
Pre-construction is real project work. It is the stage where we determine what can be built on the lot, coordinate the design, produce the construction documents, price the home, make selections, and prepare the permit application. These phases take about 3 to 4 months. Our guide to how long it takes to build a custom home in Florida shows them on a calendar.
What is included in the construction price, and what is not?
The construction price covers the scope written into the contract: the size of the home, the architectural design, the structure, the site conditions, the finish selections, and the features you chose. Anything outside that scope is priced separately.
The items most often priced separately are pools and spas, extensive landscaping, furnishings, generators, elevators, specialty site work, and utility extensions. Any of them can change the total investment. The contract, the specifications, the allowances, and the approved selections define what is included, so ask for the exclusions in writing. We cover this in how to compare custom home builders.
“Watch out when a builder is willing to give you a firm price before they truly understand your lot, plans, and selections. A number can look great at the beginning, but if it isn’t based on enough information, you’re probably going to find out what was missing later.”
Derrick Henderson, President
If you want a budget with fewer open lines, look at a Ready to Build home. The lot is secured and the plan is already permitted, so the land and most of the pre-construction work are settled before you start. See our available homes.
What does a custom home cost per square foot?
It depends on the city, the size of the home, the structure, the site, and the finishes, so we price each home from its plans and do not quote one figure for all of them. A more standardized plan with controlled selections sits at the lower end. A highly customized home with structural changes, luxury finishes, specialty rooms, large openings, a complex outdoor living area, or a waterfront site sits at the upper end.
If you compare builders on price per square foot, check two things first. Ask whether the figure is divided by the living area or by the total area under roof, because the garage and the lanai are in one and not in the other. Then ask what the price contains: site work, impact fees, the pool, and the level of the allowances.
Which choices raise a custom home budget the most?
Three, in our experience: changing the size or structure of the home, upgrading the interior finishes, and expanding the outdoor living area.
We have had clients expand garages, reconfigure major portions of the floor plan, enlarge openings, or add square footage after the design direction was set. Those changes reach past the added space into the foundation, framing, roofing, mechanical systems, engineering, and finishes.
Budgets climb when selections move to more extensive custom cabinetry, premium appliance packages, specialty stone, detailed millwork, or upgraded plumbing and lighting throughout the home.
Some clients start with a straightforward lanai and pool, then add a larger covered area, a summer kitchen, a spa, a fireplace, or more decking. Those additions involve structure, utilities, equipment, finishes, and site work.
What the three have in common is that each one touches several scopes of work at once. That is why we ask clients to settle their priorities early in design. Timing matters too. We have had clients reach the pre-permitting stage and decide to change the entire floor plan. It can be done, but the later the change, the more work has to be redone. Starting from one of our custom home floor plans keeps more of those decisions settled from the first day.
Where can you save without it showing in the finished home?
Save on the items that are easy to upgrade later. Spend on the parts of the home that are difficult or expensive to change.
Decorative lighting and plumbing fixtures. There are well-designed options at several price points, and they are easy to replace later.
Secondary bathrooms and guest rooms. Rooms used less often do not always need the same cabinetry, tile, or stone as the main living areas.
Decorative features. Extensive millwork, specialty wall treatments, and elaborate built-ins add cost quickly without changing how the home performs.
The structure, the building envelope, impact protection, waterproofing, roofing, insulation, and the mechanical systems.
These are the parts that protect the performance, durability, and long-term value of the home, and they are the hardest to change once it is built.
How much contingency should you plan for?
We typically recommend a contingency of about 5% of the project. On a $1.5 million project, that is $75,000.
The contingency is a reserve for unforeseen conditions, scope changes, and decisions made during the build. On a straightforward project with a well-defined scope, it may never be used. On a highly customized home or a site with more complex conditions, it matters more. We do not treat contingency as money that is expected to be spent.
Frequently asked questions
How much does it cost to build a custom home in Naples?
It depends on the lot, the size and structure of the home, and the finishes. Land alone runs from about $100,000 for an inland homesite to several million on the water. Collier County impact fees add about $34,000 for a home under 4,000 square feet. We price the construction from the plans, once the lot and the scope are defined.
Does the price per square foot include the land?
Usually not. A price per square foot normally refers to construction. Land, site work, impact fees, and items such as the pool are separate lines unless the contract says otherwise. Ask each builder what the figure includes before you compare two of them.
What is not included in a custom home price?
Pools and spas, extensive landscaping, furnishings, generators, elevators, specialty site work, and utility extensions are commonly priced separately. The contract, the specifications, the allowances, and the approved selections define what is included.
How much are impact fees in Collier County?
As of May 1, 2026, Collier County charges $34,051.97 for a single-family home with under 4,000 square feet of living area and $36,823.95 for 4,000 square feet or more. Both totals include county water and sewer. The fire district fee is added on top. The City of Naples and Marco Island set some of their own fees.
Does changing the plan during design add cost?
Yes. Every change has a cost, even a small one. Some changes affect only the design or the selections. Others need new architectural work, engineering, estimating, structural revisions, or updated permit documents. The further the project has progressed, the more work has to be redone.
When should I set my budget?
At the start, before design goes far. We prefer to set the financial framework early and talk openly about what can be built within it. If you plan to finance the build, our guide to construction loans in Florida explains how the loan follows the budget.
Is there a minimum budget to build with Lifestyle Design Homes?
We do not use one universal minimum. Fit depends on the city, the size of the home, the homesite, the level of customization, and what you expect from the finished home. Our focus is custom and luxury homes, and we would rather have that conversation early than encourage a project that does not match the budget.
Before you set a number
Price the lot and the home together, and ask what sits outside the construction price. Put the site work and the impact fees on their own lines, and keep about 5% in reserve. Then decide where the money matters most to you and settle those choices early in design.
Have a lot or a budget in mind? Contact Lifestyle Design Homes in Estero. We will review both with you before you commit.
Start a conversation
