Construction soft costs are the non-physical expenses of a building project: architect and engineering fees, permits and impact fees, legal work, loan interest and origination charges, insurance premiums, property taxes during the build, project management, and marketing. On a commercial development they usually run 20% to 30% of the total budget, and they follow different rules than hard costs for lending, taxes, and insurance recovery. First-time developers routinely undercount them, which is one of the fastest ways to run out of money before framing starts.
What Counts as a Soft Cost
The working test is physical. If the expense becomes part of the finished building, it’s a hard cost. Lumber, rebar, drywall, and the labor to install them all qualify. If the expense supports the project without becoming part of it, it’s a soft cost. The architect who drew the plans, the permit that authorized construction, the policy that insured the site, and the interest on the construction loan are all soft costs.
One classification trap is worth flagging before anything else: general conditions. That’s the line item covering a contractor’s on-site overhead — job trailers, portable restrooms, security, superintendent wages, debris removal, scaffolding. The items feel administrative, so developers sometimes file them with soft costs. They don’t belong there. General conditions are paid to the general contractor under the construction contract and are hard costs. Lenders, insurers, and the IRS each treat the two categories differently, so mixing them up creates problems in draw requests, claims, and tax filings alike.
The Main Categories and What They Cost
Professional design fees are usually the largest single soft cost. Architectural fees on commercial work run roughly 7% to 15% of total construction cost, with complex or custom designs pushing the higher end. Structural and civil engineers bill separately for foundation plans, site grading, drainage, and utility connections. Their drawings are what the local building department needs before it will issue a permit, so this work sits at the front of the timeline and often gets paid out of pocket before a construction loan closes.
Legal and regulatory fees stack up next. Attorneys handle zoning, contracts, lender documents, and financing statements. Building permits are priced differently in every jurisdiction — some flat, others a percentage of construction valuation. Impact fees for public infrastructure serving the development vary even more and can be a real line item on larger projects. Boundary or new-construction land surveys typically cost between $1,200 and $5,500 depending on acreage and terrain.
Financing costs are the category most developers undercount. Construction loan origination fees generally run 0.5% to 1.2% of the loan amount. Title insurance and search fees for commercial deals typically run $1,500 to $3,000. Appraisals, lender inspection fees, and legal review of loan documents pile on top. And the interest accruing on the construction loan during the build is itself a soft cost. On a multi-year project it can be one of the largest lines in the whole budget.
Insurance premiums during construction — builder’s risk and general liability — are soft costs because they protect the project without adding to the structure. Real estate taxes assessed during the build phase go here too. Project management fees generally run 3% to 5% of total construction cost on large projects and can reach 10% on smaller ones, where the fixed overhead spreads over a thinner budget.
Marketing and leasing costs enter the budget when the plan is for the property to be occupied at completion. Pre-leasing campaigns, broker commissions, and advertising for commercial or residential units all count, though as covered below they receive different tax treatment than most other soft costs.
Environmental and Green Building Line Items
Environmental site assessments deserve their own line because they can derail the schedule if contamination turns up. A Phase I assessment, which reviews historical records and site conditions, typically costs $4,000 to $10,000. Most commercial lenders require one before funding a construction loan, and completing one also helps establish the “innocent landowner” defense under federal environmental liability law if contamination is later discovered on the property.1U.S. Environmental Protection Agency. Third Party Defenses/Innocent Landowners If the Phase I flags anything, a Phase II with soil and groundwater sampling can cost $10,000 to $100,000 depending on scope.
Green building certifications add another layer. LEED, the most widely recognized standard, involves both registration and certification fees calculated from the rating system, gross floor area, and review timeline.2U.S. Green Building Council. LEED Fees and Price Quotes Certification usually also means hiring sustainability consultants, energy modeling specialists, and commissioning agents — all soft costs that compound across the schedule.
How Soft Costs Are Funded
Most soft costs are funded through a combination of owner equity and the construction loan itself. Lenders want a detailed schedule showing how every borrowed dollar will be spent, broken into hard costs, soft costs, and contingency, supported by signed professional contracts, itemized budgets, and proof of regulatory fees. Because architects, engineers, and site consultants often need to be paid before the loan closes, developers usually cover early design and site work out of pocket and reimburse themselves from the first draw.
Once construction is underway, soft costs get reimbursed through the same draw process as hard costs: invoices, lien waivers, and an updated schedule of values go to the lender, and funds release after review. Every draw needs conditional lien waivers from the professionals being paid, and missing waivers are one of the most common reasons a draw stalls.
The interest carry is worth understanding on its own. The lender sets aside part of the total loan to cover interest that accrues during construction, since the project produces no revenue until it opens. Rather than sending in monthly interest payments from outside funds, the developer draws against that reserve. The loan stays current without out-of-pocket carrying costs, but the interest is added to the total debt. On a two-year build with a multi-million dollar loan, that reserve alone can run into six figures.
How the IRS Treats Soft Costs
Most soft costs cannot be deducted in the year they’re paid. Under Section 263A, indirect costs that benefit the production of real property must be capitalized — added to the property’s tax basis and recovered over time through depreciation.3Office of the Law Revision Counsel. 26 USC 263A – Capitalization and Inclusion in Inventory Costs of Certain Expenses The costs that must be capitalized include indirect labor, officers’ compensation, insurance, taxes, and pension costs allocable to the project.4eCFR. 26 CFR 1.263A-1 – Uniform Capitalization of Costs
Interest is treated separately. Construction loan interest must be capitalized when the property has an estimated production period exceeding two years, or exceeding one year with costs above $1,000,000.3Office of the Law Revision Counsel. 26 USC 263A – Capitalization and Inclusion in Inventory Costs of Certain Expenses Most commercial projects cross at least one of those thresholds, so the interest carry becomes part of the property’s basis rather than a current deduction.
Marketing is the notable exception. The regulations specifically exclude selling, advertising, and distribution costs from capitalization, treating them as deductible service costs.4eCFR. 26 CFR 1.263A-1 – Uniform Capitalization of Costs Pre-leasing campaigns and broker advertising for a new development can be deducted in the year they’re incurred, one of the few soft cost categories that produces an immediate tax benefit during construction.
Getting the classification wrong is not cosmetic. Section 6662 imposes a 20% accuracy-related penalty on any underpayment of tax that results from misclassifying costs, in either direction.5Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments On a large development with millions in soft costs, the penalty alone can run into six figures.
Insurance Recovery When a Delay Hits
Builder’s risk insurance covers physical damage to the work in progress. It does not automatically cover what a delay does to the budget. If a fire damages part of a building mid-construction, the standard policy pays to repair the physical loss. It won’t pay the extra months of loan interest, property taxes, insurance premiums, and professional fees the developer keeps paying while repairs push completion back. Those ongoing carrying costs are soft costs, and recovering them requires a specific endorsement.
A Delay in Completion endorsement, sometimes called a soft cost endorsement, closes that gap. It reimburses the developer for additional soft costs incurred between the covered loss and the date the project would have finished absent the loss. Adjusters compare the original schedule to the revised one to determine how many months the damage added, then calculate the financial impact from the documented budget. Covered items typically include extended loan interest, additional property taxes, continued insurance premiums, and extra fees for architects or engineers involved during repairs.
Two features of these endorsements catch developers off guard. First, most policies impose a waiting period, commonly 30 to 60 days, before soft cost coverage begins. A delay shorter than the waiting period produces no recovery, and even on longer delays the first month or two of extra carrying costs stay with the developer. Second, the endorsement carries its own sublimit, often 10% to 35% of the total insured project value. On a $20 million project with a 15% sublimit, the maximum soft cost recovery is $3 million regardless of actual losses. In catastrophe-prone areas or on projects with tight deadlines, both terms are worth negotiating before the policy binds, because they can’t be adjusted after a loss.
Projects that track soft costs in a dedicated budget category from day one have a much easier time assembling a claim than those that lump everything together. That tracking habit is one of the cheapest forms of risk management available on a construction project, and it pays off whether the risk that materializes is a delay claim, a tax audit, or a lender question about a draw.