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Renovations

Custom Home vs. Major Renovation in South Florida: How to Decide

SouthShore Builders
SouthShore Builders··10 min read
South Florida home renovation and new construction comparison by SouthShore Builders

This is one of the most common conversations we have with prospective clients. You own a home in a great location, but the house itself does not work for you. Maybe the layout is wrong, the finishes are dated, or the structure does not meet current hurricane codes. The question is whether to renovate what you have or tear it down and build the home you actually want.

There is no universal answer. But there is a clear framework for making the decision, and it starts with understanding what each path actually costs and delivers.

The Short Answer

A major renovation typically costs 60 to 80 percent of new construction but delivers less than 100 percent of the result. New construction gives you exactly the home you want on the lot you already own. The right choice depends on the structure, the lot, and how much of the existing home you actually want to keep.

60-80%What a major renovation typically costs relative to tearing down and building new on the same lot.

Five factors that determine the answer

1

Structural Condition

If the existing structure has foundation issues, termite damage, outdated electrical, or non-code-compliant framing, renovation costs escalate quickly. A structurally sound home with good bones is a better renovation candidate.

2

Floor Plan Compatibility

Can the existing layout be modified to match how you want to live? Load-bearing walls, ceiling heights, and the building footprint set hard limits on what a renovation can achieve.

3

Code Compliance

In South Florida, renovations exceeding 50 percent of the home's assessed value trigger the FEMA 50 percent rule, requiring the entire structure to be brought to current flood and wind codes. This can make renovation more expensive than new construction.

4

Lot Value vs. Structure Value

If the land is worth significantly more than the structure, tearing down and building new often makes more financial sense. In East Delray Beach and coastal communities, this is frequently the case.

5

Timeline and Disruption

Renovations are often messier and less predictable than new construction because you discover problems as you open walls. New construction starts clean and follows a more predictable sequence.

These five factors will tell you whether renovation or new construction is the right path for your situation.

Side-by-side comparison

Major renovation (gut and remodel)$250 - $550/sq ft
New construction$350 - $800/sq ft
Typical renovation timeline10 - 18 months
Typical new construction timeline14 - 24 months
Renovation surprises (hidden costs)15 - 25% overrun
Key comparisonSee ranges above

Here is how the two paths compare on the metrics that matter most:

The per-square-foot cost of renovation looks lower, but renovations almost always include surprises behind walls: outdated plumbing, substandard wiring, termite damage, or structural issues that were invisible until demolition began. These discoveries add cost and time that were not in the original estimate.

When renovation is the right choice

Renovation makes sense when the existing structure is sound, the floor plan is close to what you want, and the scope of work is targeted rather than comprehensive. Adding a primary suite, updating a kitchen and bathrooms, or enclosing a patio are all projects where renovation delivers good value without the cost and timeline of a full teardown.

Renovation also makes sense when the home has architectural character worth preserving. Some older homes in Delray Beach and Palm Beach have design details that would be expensive or impossible to replicate in new construction.

When new construction is the right choice

New construction is the better path when the renovation scope approaches 70 percent or more of the home. At that point, you are paying nearly as much as new construction but getting a result constrained by the existing structure. You are also likely triggering the FEMA 50 percent rule, which requires bringing the entire home to current code standards.

New construction is also the clear choice when the lot value far exceeds the structure value, when the existing foundation cannot support a second story or major addition, or when you want a home that is fully hurricane-code-compliant with modern systems, insulation, and energy efficiency.

The FEMA 50 percent rule

In South Florida, this rule is often the deciding factor. If the cost of your renovation exceeds 50 percent of the building's market value (not including land), the entire structure must be brought into compliance with current flood elevation and wind resistance codes. For a home built before modern codes, this can mean elevating the entire structure, replacing the roof system, installing impact windows throughout, and upgrading the structural connections. These code compliance costs can push a renovation budget past the cost of demolishing and building new.

Frequently asked questions

Not sure which path is right?

We evaluate both options for clients regularly and can give you an honest assessment of which path makes more sense for your specific home and goals. [Schedule a consultation](/contact) or [see our renovation and new construction projects](/projects).

Frequently Asked Questions

Is it cheaper to renovate or build new?

A targeted renovation (kitchen, bathrooms, primary suite) is almost always cheaper than new construction. But a comprehensive gut renovation that touches every system in the home often costs 60 to 80 percent of new construction while delivering a less optimal result. When renovation scope exceeds 70 percent of the home, new construction frequently makes more financial sense.

What is the FEMA 50 percent rule?

If renovation costs exceed 50 percent of the building's pre-renovation market value (structure only, not land), the entire building must be brought into compliance with current FEMA flood and local wind code requirements. This can add substantial cost to a renovation project and is often the factor that tips the decision toward new construction.

Can I live in my home during a major renovation?

It depends on the scope. Targeted renovations like a kitchen remodel may allow you to remain in the home with some disruption. A comprehensive gut renovation typically requires moving out for 6 to 12 months. New construction on the same lot always requires temporary housing during the build.

How do I know if my home is worth renovating?

Start with a builder evaluation. We look at the structural condition, the floor plan potential, the code compliance status, and the land-to-structure value ratio. If the structure is sound and the renovation scope is under 50 percent of value, renovation is usually viable. If not, new construction is worth considering.

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SouthShore Builders is based in Delray Beach and builds across Palm Beach County and Broward County.

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