Retainage is the percentage of each draw the lender or owner withholds from the builder until the project reaches substantial completion. On residential construction loans, that percentage is usually 10%, sometimes stepped down to 5% after the project crosses the halfway mark. The money is real, it is the builder’s money in the sense that it has been earned, and it does not show up in the builder’s account until a specific set of conditions is met.
Most builders understand retainage as an abstract concept until the running balance gets large enough to matter. By the time a $430,250 build hits draw 5, retainage held is north of $20,000. That is enough to cover a payroll cycle if it ever released, which it does not until the punch list closes and the paperwork lands.
Why retainage exists
Retainage solves three problems for the lender and the owner at once. The first is incentive alignment. The builder has a financial interest in finishing the project rather than walking off at 90% to chase the next deal. The second is completion risk. If the builder fails partway through, the held retainage gives the lender a fund to bring in a replacement. The third is lien risk. If a sub files a mechanics lien late in the project, the held retainage covers the exposure without the lender having to claw back funds already disbursed.
From the builder’s side, retainage is a cost of doing business with leverage. It compresses cash flow during the build and pays out at the end if everything goes right. The discipline is treating it as deferred revenue rather than free cash, because it is.
Standard residential rates
On a residential construction loan from a regional or community bank, 10% on every draw is the default. Some lenders step the rate down to 5% after the build is 50% complete by line item, which moderately frees up cash in the back half. Hard-money lenders sometimes set retainage at 0%, but they compensate with tighter draw inspections and faster funding cycles. Private lenders vary widely; retainage on a friends-and-family loan might be zero or might be a flat dollar amount held until close.
State law occasionally sets a ceiling. North Carolina caps retainage at 5% on certain residential contracts. California Civ. Code § 8810 governs the framework for retention proceeds and timing of release. A builder working across state lines needs to confirm the contract aligns with local statute rather than assuming the loan documents are correct by default.
The running balance, with real numbers
The 926 Stratford build (1,784 SF, $430,250 contract) is front-loaded across 7 draws. With 10% retainage held flat, the running balance looks like this.
| Draw | Phase | Draw amount | Retainage held | Net to builder | Cumulative retainage |
|---|---|---|---|---|---|
| 1 | Mobilization, site, foundation | $64,538 | $6,454 | $58,084 | $6,454 |
| 2 | Framing, sheathing, roof deck | $77,445 | $7,745 | $69,700 | $14,199 |
| 3 | Dry-in, MEP rough | $73,143 | $7,314 | $65,829 | $21,513 |
| 4 | Insulation, drywall | $60,235 | $6,024 | $54,211 | $27,537 |
| 5 | Cabinets, flooring, tile | $60,235 | $6,024 | $54,211 | $33,561 |
| 6 | Trim, paint, fixtures | $51,630 | $5,163 | $46,467 | $38,724 |
| 7 | Final, CO, punch close | $43,025 | $4,303 | $38,722 | $43,025 |
At final draw, the cumulative retainage equals 10% of the contract value ($43,025). That balance releases on a separate event, not as part of draw 7. Builders who plan as if the retainage releases with draw 7 are caught short when the bank holds it for another four to six weeks waiting on punch and documentation.
When retainage releases
The release is not a date. It is a checklist. On most residential construction loans, retainage releases when the project hits substantial completion, the certificate of occupancy is issued, all final lien waivers are on file, and the punch list is closed to the inspector’s satisfaction. Some lenders add a notarized statement from the builder that no liens are pending and no claims are outstanding.
The order matters. Substantial completion can predate the certificate of occupancy by weeks if the building department is slow. Final lien waivers can only be issued after final payment, which is the retainage release itself, so most lenders accept conditional finals at the time of request and require unconditional finals before the wire goes out. The result is a multi-step dance rather than a single event, and the builder who treats it as a single event ends up with retainage stuck for an extra month.
Pass-through retainage
Retainage on the prime contract is one number. Retainage on the subcontracts is another. The question of who eats the float is contract-specific.
In a pass-through structure, the builder holds the same percentage from each sub that the lender holds from the builder. If the lender holds 10% from the builder on the framing draw, the builder holds 10% from the framing sub. The timing matches: when the lender releases the builder’s retainage at project close, the builder releases the subs. Cash flow is symmetrical and nobody is fronting anyone’s capital.
In a non-pass-through structure, the builder pays the subs in full on each draw and absorbs the retainage out of margin. This is sometimes used to attract scarce subs in a tight market. The builder is essentially extending the sub a loan equal to 10% of the sub’s contract for the duration of the project. On a $430,250 build with $300,000 in subcontracts, that is $30,000 of builder-funded float for four to six months. The discipline is making sure the margin actually covers it.
State trust fund implications
In several states, retainage held by the builder from subs is statutorily a trust fund. The builder is not the owner of those funds. The builder is a custodian. Spending the retainage on anything other than paying the downstream sub it was withheld from is a trust fund violation, which in some states is a felony.
New York Lien Law § 71 is the most cited example, treating funds received for a project as trust funds for the benefit of subs and material suppliers. Colorado Rev. Stat. § 38-22-127 is similar. Texas Property Code Chapter 162 applies the trust fund doctrine to construction payments broadly. Maryland, Minnesota, and Washington have analogous regimes.
The practical implication for residential builders is that the retainage held from subs needs to live in an accounting bucket the builder does not raid for general operations. Most professional builders run a trust subaccount or at minimum a separate ledger that tracks held retainage by sub by project. Co-mingling is what gets builders sued or charged.
Construction loan retainage vs. owner-held retainage
On a construction loan, retainage is held by the lender out of each draw and released to the builder at project close. The builder applies for retainage release as a final draw event.
On an owner-financed or cost-plus arrangement, retainage may be held by the owner directly. The mechanics are similar but the release is governed by the construction contract rather than the loan documents. Owner-held retainage on residential builds is usually 5% to 10%, with release tied to substantial completion and acceptance. A common variation is owner-held retainage with a partial release at certificate of occupancy and the balance at the end of a 30 or 60 day post-close warranty period.
AIA G702 and G703 mechanics
On the AIA G702 application for payment, retainage appears on line 5. The line is split into two sub-lines: 5a (retainage on completed work) and 5b (retainage on stored materials). Most lenders cap retainage on stored materials at 0% or require 100% retainage on materials until installed; the contract dictates the rate.
On the G703 continuation sheet, retainage shows up implicitly. Column G is the total work completed and stored. Column H is the percentage complete. The G702 line 5 total is computed off the G703 column G total. Builders who hand-edit the G702 without recalculating retainage from the G703 produce drawings the lender bounces immediately.
Lender variations
| Lender type | Typical retainage | Release pattern |
|---|---|---|
| Regional or community bank | 10% flat, sometimes stepped to 5% after 50% | At substantial completion + final waivers + CO |
| Hard-money lender | 0% to 5% | Tighter draw inspections instead of holdback |
| Private lender | Variable, often negotiated per deal | Per loan agreement |
| Owner-financed | 5% to 10% | Per construction contract, sometimes split CO and warranty |
Change orders and retainage
Change orders typically carry the same retainage rate as the base contract. A $15,000 change order on a 10% retainage contract holds $1,500 until release. Some contracts carve out an exception: change orders for owner-requested upgrades after substantial completion sometimes have no retainage, since the timing question (is the project done?) is moot.
The cleanest approach is to spell out the retainage treatment in the change order itself, signed by the owner and the builder. Defaulting to silence is what produces disputes at close, when the owner believes change order retainage was waived and the builder believed it was held.
Final release mechanics
The retainage release request is a small package in its own right. Most lenders require, at minimum: a final draw application showing the retainage balance, unconditional final lien waivers from every vendor on the project, the certificate of occupancy from the building department, manufacturer warranties for major systems (HVAC, roof, appliances), and the closed building permit. Some lenders add a final inspection report and a builder’s affidavit that no claims are pending.
The package takes a week to assemble if the unconditional waivers were not chased through the project. It takes an afternoon if the waiver discipline was in place from draw 1. The difference in calendar time on the back end is usually three to four weeks, which is to say roughly the time it takes to chase a missing waiver from a sub who has already moved on to the next job.
Common pitfalls
Rate drift between draws is the most common error. The contract specifies 10%, the first three draws hold 10%, draw 4 holds 8% because the template was copy-pasted from a different project, and the lender bounces the package back. The fix is to validate the retainage rate against the contract, not against the prior draw.
Assuming retainage releases automatically is the second most common. The builder treats final draw as the moment retainage hits the account. The retainage release is a separate event with its own checklist, often weeks later.
Holding retainage on stored materials when the contract prohibits it is the third. Some contracts explicitly waive retainage on material that has been paid for and delivered to site. Holding it anyway delays sub payment and creates avoidable friction.
How BuilderGrid handles retainage
BuilderGrid tracks retainage on every line of every draw, with the rate set at the project level and validated against the contract. The running balance shows on the project dashboard so the builder always knows the held amount. Pass-through retainage from subs lives in a parallel ledger keyed to each subcontract, with state trust fund segregation flagged where applicable. At project close, the retainage release package generates from the same line item data as the final draw, with a checklist of the documents the lender requires and a single click to assemble the bundle.