Key takeaways
- Spec home contracts are largely fixed: Some builders use preset purchase agreement contracts, meaning core terms like price, timeline, inspections and dispute resolution are mostly nonnegotiable.
- Flexibility can be limited and handled through addendums: Minor adjustments — such as finishes or landscaping — can be agreed to in writing, but spec homes are not custom builds.
- Deadlines and deposits matter: Inspection periods are short and earnest money matters because it is typically nonrefundable after a set period, making the buyer commitment real.
Buying a spec home — a house constructed by a builder without a specific buyer in place — can appear simpler than other new‑construction options. The home already exists, finishes are visible, and closing timelines are often shorter than with a custom build.
However, the purchase agreement for a spec home follows a different legal framework than a custom‑build home.
According to Ryan Hinricher, chief executive and founder of Sunworth Homes, spec builders often rely on standardized real estate contracts rather than drafting new ones for each sale. For example, Sunworth Homes uses the Florida Realtors “as‑is” residential contract, which has been vetted by the Florida Realtors Association and the Florida Bar and defines the responsibilities and protections for both buyers and sellers.
What’s nonnegotiable — and what isn’t
Hinricher said spec home purchase agreements generally spell out the core terms of the transaction, including the purchase price, closing timeline, inspection period, financing requirements, disclosures and dispute‑resolution process. Those foundational provisions are largely nonnegotiable — a structure he said reflects the realities of how spec homes are built, marketed and sold.
Any flexibility, he explained, usually comes outside the main contract, through written addendums. Rather than changing the agreement itself, addendums are used to document exceptions or adjustments to standard terms — and must be agreed to in writing and signed by both parties.
Addendums are how spec builders handle changes
Addendums are a routine part of spec home transactions, according to Hinricher.
Because spec homes are marketed as existing inventory, some may still be in different stages of completion. That can create limited opportunities for buyers to request small changes, such as:
- Paint colors
- Exterior accents such as shutters or doors
- Hardware finishes
- Landscaping adjustments or credits
Those changes are documented through addendums that state what is being modified; when payment is due, which is often upfront, and how the change affects the final price. Hinricher noted that addendums appear more often than buyers expect, but they are typically narrow in scope and not a pathway to major customization.
Spec home is not a custom home
According to Hinricher, problems often arise when buyers blur the line between spec and custom construction.
He said friction tends to occur when buyers begin treating a spec home — even one that’s only 70% to 80% complete — like a custom build. The purchase agreement, however, is written to reflect the opposite reality: Once construction is underway, major structural or design changes are generally not feasible.
If buyers want a higher level of customization, Hinricher said that usually means moving into a different price category — or working with a different type of builder. The contract reinforces that distinction.
Inspection periods are short
At Sunworth Homes, the standard inspection period is 15 days. During that window, buyers can inspect the property in whatever manner they choose — including hiring a home inspector, ordering an appraisal or conducting their own review — and cancel the contract if they’re not satisfied.
Once that period ends, the contract states that the buyer is accepting the physical condition of the home, and the earnest money typically becomes nonrefundable.
Hinricher said this is one of the areas where buyers are most often surprised later — not because the language isn’t in the contract, but because they didn’t fully internalize what the deadline meant.
Earnest money makes the commitment real
Hinricher said he makes it clear that earnest money is meant to be taken seriously in spec home deals.
Builders carry real holding costs — including financing, insurance, taxes and interest — so the contract is designed to prevent buyers from casually walking away after tying up a completed or nearly completed home.
At Sunworth Homes, earnest money is typically $5,000, sometimes as low as $2,500, and higher if customization is involved. After the inspection period, that deposit is generally nonrefundable unless a clearly defined financing or appraisal contingency applies.
While life circumstances can change, Hinricher said the contract is written to balance buyer protections with the builder’s financial reality.
Disputes are meant to be resolved before escalating
If issues arise, Hinricher explained that spec home purchase agreements generally require buyers and sellers to attempt resolution first, then move to mediation if necessary.
The contract outlines timelines for addressing disputes and typically requires both parties to share mediation costs. Litigation is not the default path, and in Hinricher’s experience, it is rarely the outcome.
Warranties are addressed directly in the agreement
Spec home purchase agreements also lay out how warranties are handled, whether through a builder‑provided warranty, a third‑party home warranty or a combination of both.
In some cases, buyers request an additional third‑party warranty for peace of mind, particularly when working with a local builder. Those requests are handled contractually and factored into the overall transaction.