Soft costs are the part of a luxury construction budget with nothing to photograph. They buy drawings, permissions, expertise, and protection rather than materials, they are spent before anything is built, and they are the line owners most often leave out of their own spreadsheet entirely. That omission is why so many budgets appear to fail during construction when they actually failed before it started.
Key takeaways
- What are soft costs?
On a South Florida luxury home, every project expense that is not the physical labor and materials of construction counts: design and engineering, surveys, geotechnical investigation, permits and impact fees, insurance, legal and accounting, testing and inspections, utility connections, financing charges, and the carrying cost of land during the build. - Which soft costs come first?
The first ones on a South Florida build are the diligence set: survey, geotechnical investigation, flood determination, structural assessment on a renovation, and zoning review. - What do design and engineering actually cover?
Design and engineering on a South Florida luxury home cover architecture through construction documents, structural engineering, mechanical, electrical, and plumbing design, civil and drainage, landscape and pool design, interior design where engaged, and on waterfront parcels coastal or marine engineering. - How significant are permits and impact fees?
Permits and impact fees are more significant than most South Florida owners assume, and they vary by jurisdiction.
What are soft costs?
On a South Florida luxury home, every project expense that is not the physical labor and materials of construction counts: design and engineering, surveys, geotechnical investigation, permits and impact fees, insurance, legal and accounting, testing and inspections, utility connections, financing charges, and the carrying cost of land during the build. Soft costs are real, unavoidable, and largely front-loaded.
Their place in the whole is shown in the luxury construction cost breakdown.
Which soft costs come first?
The first ones on a South Florida build are the diligence set: survey, geotechnical investigation, flood determination, structural assessment on a renovation, and zoning review. These are spent before there is a project at all, and they are the ones that most reliably save money later by revealing what the parcel will actually support.
They belong to the analysis described in the feasibility study for luxury home builds.
What do design and engineering actually cover?
Design and engineering on a South Florida luxury home cover architecture through construction documents, structural engineering, mechanical, electrical, and plumbing design, civil and drainage, landscape and pool design, interior design where engaged, and on waterfront parcels coastal or marine engineering. These soft costs scale with complexity rather than with square footage, which is why unusual sites cost more to document.
The coastal disciplines are described in engineering challenges for Intracoastal and oceanfront homes.
How significant are permits and impact fees?
Permits and impact fees are more significant than most South Florida owners assume, and they vary by jurisdiction. Building permits, trade permits, plan review, impact fees, utility connection charges, and any environmental or coastal application fees all land before construction. These soft costs are published by the authorities that levy them and can be established during diligence rather than estimated.
Fee schedules are published by Broward County, Palm Beach County, and Miami-Dade County.
What about insurance and testing?
Insurance and testing on a Florida build mean builder’s risk insurance for the duration, general liability, and any owner-required coverage, plus threshold inspections, structural and concrete testing, soil compaction testing, and third-party inspections the code requires. These soft costs are not optional and they scale with the build’s length, which is another way a slipped schedule becomes a budget event.
The schedule link is in a realistic timeline for luxury custom home construction.
| Soft cost | When it is spent | Can it be reduced? |
|---|---|---|
| Survey, geotechnical, flood determination | Diligence, before commitment | No, and it saves more than it costs |
| Architecture and engineering | Design through documentation | By settling the program first |
| Permits and impact fees | Before construction | No, but they are published and knowable |
| Insurance | Throughout, scaling with duration | By finishing on schedule |
| Testing and inspections | Throughout construction | No, they are code required |
| Utility connections | Before or during site work | Partly, by parcel selection |
| Carrying costs | Every month of the build | By protecting the schedule |
Which soft costs continue through the build?
The ones that continue through a South Florida build are carrying costs: land holding, financing interest, property tax, insurance, and temporary utilities, all accruing monthly whether or not work is progressing. On a project running 18 to 36 months these are substantial, and they are the reason schedule protection and budget protection are the same activity.
Property tax is administered by the Florida Department of Revenue.
Why do soft costs get underestimated?
They get underestimated on South Florida budgets for three reasons: they are invisible, so they feel less real; they are spread across many small invoices rather than one large one; and they arrive before the excitement of construction, when owners are still thinking about the house rather than the project. None of these make them smaller.
Budget structure is covered in how to budget a luxury home build.
Can soft costs be reduced?
Some can be reduced on a South Florida build, and carefully. Consolidating consultants, avoiding redesign by settling the program first, and choosing a parcel with fewer regulatory layers all genuinely reduce them. What does not work is skipping diligence, which converts a known soft cost into an unknown hard one, usually at a multiple.
The parcel question is covered in teardown versus renovation.
How should they be presented in a budget?
They should be presented in a South Florida luxury budget as their own section with individual lines, not as a percentage allowance. An owner should be able to see each consultant, each fee, and each insurance line separately, with what has been committed and what remains. Soft costs buried in a single line are soft costs nobody is managing.
How does Kass Construction & Development handle them?
By itemizing them from the start: Kass Construction & Development, a state-licensed (CGC1529472) boutique luxury builder led by Mitch Kass, a licensed general contractor and attorney, with 100+ luxury residences delivered by Mitchell Kass and the firms he has led across Broward, Palm Beach, and Miami-Dade, presents soft costs as named lines in the budget so owners see the real total before committing.
Contact Kass Construction & Development or call 954-607-4335.
Which soft costs belong in a South Florida luxury home budget, and when are they paid?
Soft costs are easiest to budget as a list with a timing column, and the table below is the list a complete luxury home budget in Broward, Palm Beach or Miami-Dade should carry.
| Soft cost | What it covers | When it is paid |
|---|---|---|
| Feasibility and due diligence | Survey, geotechnical borings, structural and seawall assessments, appraisal of the existing structure, title work | Before purchase or before design |
| Architecture | Schematic design through construction documents and construction administration | Through design; a share during construction |
| Engineering | Structural, civil, mechanical, electrical, plumbing, coastal, marine, geotechnical | Through design; inspections during construction |
| Interior and landscape design | Selections, finish schedules, planting and lighting design | Design development through finishes |
| Permits, fees and reviews | Building and sub-permit fees, impact fees, environmental and state permit fees, association review fees and deposits | At filing and issuance |
| Legal and financial | Contract review, entity formation, title, closing costs, construction loan fees and interest | At contract and through construction |
| Insurance and bonds | Builder’s risk, owner’s liability, flood during construction, any performance bond | At construction start; renewed annually |
| Testing and inspections | Special inspections, window water tests, envelope testing, elevation certificates, surveys during construction | Through construction |
| Owner’s representative and consultants | Oversight, expediting, acoustic, lighting, technology and pool consultants | Through the project |
| Carrying costs | Property tax on the lot and partial improvements, utilities, security, interim housing | Monthly through the build |
| Close-out and move-in | Commissioning, as-builts, warranties, furniture logistics | At completion |
Property tax on land and improvements is administered by the county property appraiser under rules published by the Florida Department of Revenue; permit fees are set by each municipality and county, and impact fees by county ordinance. Where soft costs sit in the whole budget is shown in the Miami-Dade cost breakdown.
How should soft costs be estimated and presented in a budget?
Soft costs are estimated from proposals and fee schedules rather than from a rule of thumb, and the sequence below is how they are built into a luxury home budget so they stop surprising owners during design.
- List every consultant the project will need from the feasibility findings, including coastal and marine engineers on waterfront lots; see engineering challenges on Intracoastal and oceanfront sites.
- Obtain written proposals with fee bases, reimbursable terms and the scope each fee covers, so gaps between consultants are visible.
- Pull the municipality’s fee schedule and the county’s impact fee schedule, and price permits and reviews from them.
- Quote builder’s risk, liability and flood insurance for the construction period from a broker.
- Estimate carrying costs for the full 18 to 36 month program in a realistic timeline for luxury custom home construction, including property tax at the land value and interim housing.
- Add testing and inspection costs from the engineers’ proposals and the elevation certificate schedule.
- Present soft costs as their own section of the budget, separate from construction cost and from land, with a contingency of their own for redesign and resubmittal.
- Update the section at each budget stage as proposals become contracts, following how to budget a luxury home build.
Which soft costs can be reduced, and which should not be?
Soft costs respond to a few decisions an owner controls, and knowing which ones to trim and which to protect keeps the savings from costing more later.
- Reducible: redesign and resubmittal fees, by settling the program and freezing the design before filing, as in pre-construction planning.
- Reducible: carrying costs and construction interest, by opening the slowest approvals first and releasing long-lead items on time.
- Reducible: duplicated consultants, by defining scopes so the architect, interior designer and integrator do not each draw the same ceiling.
- Reducible: wasted feasibility spend, by running the study once and well, per feasibility studies for luxury home builds.
- Not reducible: sealed engineering, surveys and geotechnical work, because they are what the permit, the structure and the insurance rest on.
- Not reducible: builder’s risk and flood insurance during construction on a coastal lot.
- Not reducible: independent oversight on a project of this scale, whose recoverable value usually exceeds its fee.
- Renovation and rebuild carry different soft-cost profiles; the demolition, elevation and appraisal lines are compared in teardown vs renovation.
Kass Construction & Development presents soft costs as a separate, itemized section of every budget on projects across Broward, Palm Beach and Miami-Dade, priced from proposals and fee schedules rather than percentages.
Frequently Asked Questions
What are soft costs in construction?
Everything that is not the physical labor and materials: design and engineering, surveys, geotechnical work, permits and impact fees, insurance, legal and accounting, testing, utility connections, financing, and carrying costs.
When are they spent?
Largely before construction begins, with carrying costs continuing monthly throughout. That front-loading is why they surprise owners who budgeted only for the building.
Are permit fees predictable?
Yes. Building and trade permits, plan review, impact fees, and connection charges are published by the counties and municipalities and can be established during diligence.
Does a longer build increase soft costs?
Yes. Insurance, financing, property tax, and temporary utilities accrue with time, which is why schedule protection and budget protection are the same activity.
Can I reduce soft costs?
Somewhat: consolidate consultants, settle the program to avoid redesign, and prefer parcels with fewer regulatory layers. Skipping diligence is not a saving, it is a deferral.
How should they appear in the budget?
As their own section with individual named lines showing committed and remaining amounts, never as a single percentage allowance.
What share of the budget are they?
It varies with site complexity and jurisdiction rather than following a fixed rule, which is why they should be estimated from actual consultant fees and published fee schedules rather than a rule of thumb.
