Spec Home vs Custom Home in Palm Beach County: Cost, Timeline, Customization and Resale

Spec home vs custom home is a choice many Palm Beach County buyers face once they decide they want new construction. A spec home is one a builder starts or finishes before it has a buyer, on speculation. A custom home is designed for you and built on a lot you own or control. Both are new, and both must meet the Florida Building Code. Beyond that, they differ in cost, timeline, risk and how much say you get. This guide lays out each difference so you can pick the path that fits your budget and your calendar.

Key takeaways

• A spec home is built before a buyer signs. A custom home is designed for one buyer, often on that buyer's own lot.
• In NAHB's 2024 national survey, construction made up 64.4% of a typical new home's price and the finished lot 13.7%. Builder profit averaged 11.0%.
• Florida law gives local building departments 30 business days to act on a complete permit for a home under 7,500 square feet, and 60 business days for larger homes.
• Spec homes close faster and price is known up front. Custom homes give full design control but carry more cost and schedule risk.
• Resale depends on how broad the appeal is. Very personal custom choices can narrow the buyer pool later.

Spec home vs custom home: the basic difference

With a spec home, the builder picks the lot, the plan and most finishes. You buy what is there, or what is about to be finished. Some builders let early buyers pick from a short list of options if the house is still in framing. Once drywall is up, the choices mostly end.

With a custom home, you start with a lot and an idea. An architect or designer draws plans, an engineer signs off on the structure, and a licensed contractor builds it. You choose the layout, the windows, the roof, the kitchen and nearly everything else. In return, you take on more decisions and more risk.

A third path sits in the middle. Many production builders sell "to be built" homes from a set of floor plans in a planned community. You pick a plan and options, and the builder builds it for you. That is often called semi-custom.

What a spec home vs custom home costs

There is no reliable public figure for local cost per square foot, and quotes vary widely with lot, design and finish level. Still, national data shows where the money goes. NAHB's 2024 Cost of Constructing a Home survey looked at a typical builder home with 2,647 square feet of finished space. Construction cost averaged $428,215, or about $162 per square foot. The average sales price was $665,298.

In that survey, construction was 64.4% of the price and the finished lot was 13.7%. The rest went to overhead, financing, marketing, commissions and an average builder profit of 11.0%. NAHB notes these are national averages and not a tool for pricing a specific house in a specific place. Labor, land and code rules in South Florida can push costs well above them.

Cost risk in a spec home vs custom home

With a spec home, the price is set in the contract. The builder carried the cost risk while building, and that risk is part of the margin you pay. On the other hand, you know your number before you sign.

A custom build moves the risk to you. Change orders, material price swings, extra site work and permit revisions can all raise the final bill. Most custom contracts are either a fixed price with allowances or cost plus a fee. Read the allowances closely, since low allowances for cabinets, tile or fixtures are a common source of overruns.

Timeline for a spec home vs custom home

A finished spec home can close on a normal resale timeline, often 30 to 45 days with a loan. If the house is still under construction, closing waits until the builder gets the certificate of occupancy.

Building custom takes much longer. You need a lot, a survey, design work, engineering, a permit, the build itself and final inspections. Florida law sets some limits on the permit step. Under Section 553.792, a local building department must approve, approve with conditions or deny a complete application within 30 business days for a single-family home under 7,500 square feet. For homes of 7,500 square feet or more, the limit is 60 business days.

If a department misses those limits, it must cut the permit fee by 10% for each business day late, with some exceptions. However, the clock only counts once the application is complete, and each round of comments adds time. HOA design review in a gated community can add its own step before you even apply.

Florida Building Code basics

Every new home in Palm Beach County must meet the Florida Building Code. The 8th Edition (2023) has been in effect since Dec. 31, 2023. It sets wind, roof, window and energy standards for both spec and custom homes. A custom buyer can choose to go beyond the code, such as stronger impact glass or a higher floor elevation. A spec buyer gets what the builder chose, so ask for the permit file and product approvals.

Design control and customization

This is the main reason people build custom. You can fit the house to the lot, the view, the way you live and the cars or boat you own. You can plan for aging in place, a home office, a pool cabana or a guest suite.

A spec home trades control for speed and simplicity. Builders aim spec homes at the widest group of buyers, so finishes tend to be neutral and floor plans familiar. If you like the result, that is a plus. If you plan to remodel right away, the savings may disappear.

Our checklist on how to choose a custom home builder covers licensing, insurance, references and contract terms if you go the custom route.

Financing a spec home vs custom home

A completed spec home is financed like any other purchase. You get a standard mortgage, an appraisal and a closing date. If the home is still under construction, your lender may need the builder's timeline and a final inspection before closing.

A custom home usually needs a construction loan. Many lenders offer a construction-to-permanent loan, which turns into a regular mortgage once the home is done. The lender pays the builder in draws as work is finished, and it often checks progress before each draw. Expect larger down payments, more paperwork and an appraisal based on plans and specs. If you already own the lot, its equity may count toward the down payment, depending on the lender.

Resale value of a spec home vs a custom home

New homes in good locations tend to hold appeal, but the details matter when you sell. Spec homes are built to broad taste, so they usually match what nearby buyers expect. That can make pricing and appraisals easier.

Custom homes vary more. A design that fits one family perfectly can look odd to the next buyer. Unusual layouts or very costly finishes may not add their full cost to the appraised value. As a result, many custom owners only recover their spend if they hold the home for years.

Recent local numbers set the backdrop. In August 2026, Miami Realtors reported a Palm Beach County single-family median sale price of $650,000, 40 median days to contract and 3.5 months of supply. New construction at higher price points behaves differently from that median, so ask your agent for comps on recent new homes in the same area.

Where each option shows up in Palm Beach County

Spec homes and builder communities are common in the western and northern parts of the county, where there is more land. Buyers looking in Wellington or Jupiter will find both new builder homes and older lots sold for custom builds. Teardown lots in established coastal neighborhoods often go to custom or luxury spec builders.

According to Pure Equity's MLS data as of October 1, 2026, the median list price of active residential listings was $915,000 in Wellington and $859,495 in Jupiter. Those figures mix condos and houses, so they set a rough range rather than a new-home price.

Which one fits you?

A spec home tends to fit buyers who:

• Need to move within a few months.
• Want a known price and a simple loan.
• Like the builder's finishes, or plan small changes later.

A custom home tends to fit buyers who:

• Own or can find the right lot.
• Have a year or more before they need to move.
• Want features no spec home offers, and can absorb overruns.

Either way, hire your own inspector. New homes still have defects, and our guide to the new construction buying process explains when to inspect and what to ask the builder.

Frequently asked questions

Is a spec home cheaper than a custom home?

Often, on a cost per square foot basis, because builders buy in volume and repeat plans. But a spec home includes the builder's profit and carrying costs. Compare finished price to finished price for similar size and quality.

Can I make changes to a spec home?

Sometimes, if you sign early. Once the builder passes a certain stage, changes get costly or are not allowed. Get any agreed changes and prices in writing.

How long does a custom home take in Palm Beach County?

It depends on design, permits, HOA review, weather and the builder's schedule. Permit review alone can run up to 30 or 60 business days per round under state law. Plan for a year or more from lot to keys.

Do I need a construction loan for a spec home?

Usually not. A finished or nearly finished spec home is bought with a standard mortgage. Custom homes are the ones that typically need a construction loan.

Sources

• NAHB, Cost of Constructing a Home 2024
• Florida Statutes, s. 553.792 building permit application timelines
• Florida Building Commission, Florida Building Code
• 2023 Florida Building Code, Residential, 8th Edition
• Miami Realtors, Palm Beach County August 2026 market report

Selling to make room for a new build? Find out what your current home would sell for with a free home valuation, so you can set a real budget. Weighing new construction against a resale home? Get a new construction vs. resale comparison from a Pure Equity agent.