An interior design retainer agreement is the written contract that sets the scope, fees, ownership, and exit terms for a design project before any work starts, and specifies how the upfront retainer payment gets applied against the designer’s billings. The clauses below are the ones that decide whether a project ends in a finished room or a fee dispute.
Pin Down the Parties and the Scope of Work
Start with the full legal names of the designer or design firm and the client, plus the physical address of the project site, including square footage and building specifics. These details fix who is bound and what space is covered.1U.S. Securities and Exchange Commission. Standard Form of Agreement For Interior Design Services
The scope-of-work paragraph is the most important clause in the document. List every service the designer will provide: space planning, furniture selection, color coordination, lighting layouts, fixture specification, and anything else promised. Anything not listed is outside the agreement. “Furniture selection for living room, dining room, and primary bedroom” is enforceable in a way that “design services for the home” is not.
If floor plans, structural surveys, or prior renovation drawings describe the starting condition of the space, reference them by name in the agreement. That reference protects the designer from being blamed for pre-existing structural problems the client never disclosed. Verify the documents still match the site before signing.
Break the Project into Phases
Defined phases give both sides a way to measure progress and tie payments to deliverables. A typical residential project moves through programming or consultation, concept development, design development with detailed specifications, and finally procurement and installation. Each phase should carry its own description, deliverables, and timeline so neither side can argue later about whether a stage was finished.
How the Retainer Fund Works
The initial retainer is an upfront payment that secures the designer’s time and covers early-stage work. For residential projects, retainers commonly run from $2,500 to $10,000, with larger or luxury projects requiring more. The agreement needs to say whether that money is applied as a credit against future invoices or held as an evergreen balance.
An evergreen retainer works like a revolving fund. The designer bills against it, and when the balance drops below a set threshold the client must top it back up. Spell out the trigger balance, the required replenishment amount, and how many days the client has to send the money. This keeps the designer from financing the project out of pocket and gives the client visibility into spending.
If any part of the retainer is nonrefundable, say so plainly. If a portion is refundable on termination, state the timeline for returning it, which is commonly 30 days after the end of the engagement and after outstanding fees and expenses are deducted.
Fees, Expenses, and Late Payment
Interior design fees generally follow one of three structures: hourly billing, a flat fee for the whole project, or a percentage of the total project cost (commonly 10 to 25 percent of the overall budget). Document the chosen structure, the rate or amount, the billing interval (monthly is standard), and what counts as billable time. Travel to the site, vendor meetings, and phone consultations should be addressed one way or the other so there is no argument later.
Flat-fee arrangements shift the overrun risk to the designer, which is why they almost always need to be paired with a tight scope description and a change order clause. Hourly billing shifts that risk to the client, so the client has a stronger interest in capping or estimating hours by phase.
Reimbursable expenses deserve their own section. Travel costs, printing, sample shipping, courier fees, and material samples add up faster than clients expect. Specify which categories are reimbursable, whether receipts are required, whether any markup applies, and whether reimbursables are capped or need client approval above a threshold.
Late payment terms protect cash flow. State the payment window (typically 30 days from invoice), the late fee rate (professional design contracts commonly set this around 1 to 1.5 percent per month on unpaid balances),1U.S. Securities and Exchange Commission. Standard Form of Agreement For Interior Design Services and the designer’s right to pause work if invoices go unpaid beyond a defined period.
If the designer accepts credit cards, address processing fees. Card network rules cap surcharges at 3 to 4 percent depending on the brand, and surcharges on debit cards are prohibited under federal law and card network rules. Where surcharging is legal, the fee has to appear as a separate line item, not folded into the quoted price.
Require Written Change Orders
Scope creep is the single most common cause of disputes in design work. The client adds a bathroom, swaps a material that cascades into other selections, or decides mid-project to gut a room that was originally getting a refresh. The agreement needs a clause stating that any work outside the original scope must be requested in writing, priced separately, and approved by the client before the designer proceeds. Without that language, designers end up eating hours they cannot bill and clients end up with invoices they did not expect.
Procurement: Agent or Principal
When the designer purchases furniture, fixtures, and equipment on the client’s behalf, the agreement has to specify which role the designer plays. The distinction affects liability, ownership during transit, trade discounts, and sales tax.
A designer acting as a principal buys the goods, takes ownership, and resells them to the client at a markup. The designer carries responsibility for defects, shipping damage, and product failures because the client’s legal relationship is with the designer, not the manufacturer. A designer acting as an agent facilitates the purchase on the client’s behalf. The client is the legal buyer, the manufacturer or supplier carries product liability, and the designer earns a procurement fee rather than a markup. Trade discounts flow through to the client instead of being retained by the designer.
The money handling differs too. When the designer acts as an agent, client funds for purchases should sit in a separate account rather than mix with the designer’s business revenue. When the designer acts as a principal, incoming payments are the designer’s own funds with no segregation requirement.
Sales tax follows the same split. In most states, a designer who buys and resells goods needs a seller’s permit, uses a resale certificate when purchasing from suppliers, and collects sales tax from the client on the final sale. Whether design services themselves are taxable varies significantly by state. The agreement should name which party is responsible for applicable taxes and how those charges appear on invoices.
Who Owns the Drawings
Under federal copyright law, copyright in an original work vests initially in the person who created it.2Office of the Law Revision Counsel. 17 U.S. Code 201 – Ownership of Copyright An independent designer therefore owns the copyright in every sketch, floor plan, 3D rendering, and specification sheet they produce. The “work made for hire” exception that would give the client automatic ownership applies only to employees acting within the scope of employment or to a narrow list of commissioned categories, and interior design drawings are not on that list.3Office of the Law Revision Counsel. 17 U.S. Code 101 – Definitions
In practice, the agreement should state that the designer retains all intellectual property rights in the work product and that the client receives a limited license to use the drawings and specifications for the completion of that specific project only. Using the plans on a different property, sharing them with another contractor for a separate build-out, or reproducing the designs without written consent should be defined as a breach, with the designer reserving the right to seek injunctive relief and damages.
If the client wants full ownership of the design documents, that transfer has to be in writing and typically costs extra. A blanket “all work product belongs to the client” clause is worth negotiating rather than accepting by default, because it strips the designer of the ability to reuse concepts in future projects.
Photography and portfolio rights are easy to overlook. Include a clause granting the designer the right to photograph the completed project and use the images for marketing, portfolio display, social media, and press. Because the photographer who takes the images owns the copyright in the photographs themselves, the designer also needs a separate written arrangement with any hired photographer to secure usage rights.
Liability, Insurance, and Indemnification
Draw a clear line between the designer’s responsibility and the responsibilities of contractors, manufacturers, and suppliers. A standard interior design contract states that the designer is not responsible for the means, methods, or techniques of construction, nor for defects caused by contractors, subcontractors, or suppliers.1U.S. Securities and Exchange Commission. Standard Form of Agreement For Interior Design Services Without that language, a client hit with a construction defect may try to pin it on the designer who selected the contractor or specified the materials.
A mutual indemnification clause is the fairest arrangement. The designer agrees to cover losses caused by their own negligence or errors, and the client agrees to cover losses arising from contractor work, unauthorized changes, or third-party actions outside the designer’s control. One drafting trap: professional liability policies often exclude indemnification obligations that go beyond the designer’s own negligence, so overly broad indemnification language can leave the designer personally exposed for claims insurance will not cover.
Require each party to maintain appropriate insurance. For the designer, professional liability coverage protects against claims of negligence such as measurement errors, missed deadlines, or specification mistakes. General liability covers bodily injury and property damage on the job site. If the designer has employees, workers’ compensation is required in most states. List minimum coverage amounts and require proof of insurance before work begins.
How Either Side Can End the Agreement
A termination clause gives either party a structured way out. These provisions typically require written notice 15 to 30 days before the contract ends, giving the designer time to close out in-progress work and the client time to find a replacement.
The financial wind-down matters as much as the notice period. State that the designer is entitled to payment for all hours worked and expenses incurred through the termination date. Any remaining retainer balance, after deducting outstanding fees and expenses, gets returned to the client within a set timeframe, commonly 30 days. If procurement orders have already been placed, address who bears deposits, cancellation fees, and goods in transit.
Some contracts include a termination fee, usually a percentage of the remaining contract value, meant to compensate the designer for lost income and the disruption of clearing their schedule. Enforceability depends on state law and the reasonableness of the amount, so this is a clause worth running past an attorney.
How Disputes Will Be Handled
Most interior design contracts use a tiered dispute resolution process: informal negotiation first, mediation if that fails, and binding arbitration or litigation as a last resort. Mediation uses a neutral third party who helps both sides reach a voluntary agreement but cannot impose one. Arbitration puts the decision in the hands of an arbitrator and is usually final and binding.
If the agreement includes an arbitration clause, specify which institution administers it (the American Arbitration Association is the most common choice), how many arbitrators sit on the case, which procedural rules apply, and whether the losing party pays the other side’s fees.
Arbitration is not always the right venue. If the designer needs to file a mechanics’ lien to secure payment for unpaid work, that process typically requires court action. In most states, design professionals are eligible to file mechanics’ liens, but the eligibility requirements and filing deadlines vary. Small collection disputes may also fit better in small claims court. A well-drafted arbitration clause carves out exceptions for lien filings, small claims, and requests for injunctive relief so the designer is not stuck in a slow arbitration process when a faster remedy exists.
Name the governing law and jurisdiction. Designers working across state lines generally want the contract governed by the law of their home state, since they will be more familiar with local procedure and will not need to travel for hearings.
Signing and When Work Starts
Electronic signatures are legally valid for design contracts. The federal Electronic Signatures in Global and National Commerce Act provides that a contract cannot be denied enforceability solely because it was signed electronically.4Office of the Law Revision Counsel. 15 U.S. Code Chapter 96 – Electronic Signatures in Global and National Commerce Platforms like DocuSign and Adobe Sign create a timestamped record of each signature, which is useful if disputes arise later over what was agreed and when. Both parties should receive a fully executed copy immediately after signing.
State explicitly that the agreement is not active until the initial retainer payment clears. That way the designer does not start work, turn away other clients, or order materials before the money arrives.
One wrinkle catches designers off guard. If the agreement is signed at the client’s home rather than at the designer’s office or studio, the FTC’s Cooling-Off Rule may apply. The rule gives consumers three business days to cancel any contract valued at more than $25 when the sale occurs at the buyer’s residence.5Federal Trade Commission. Cooling-off Period for Sales Made at Home or Other Locations Designers who sign contracts during in-home consultations should know the client may have a legal right to cancel during that window regardless of what the agreement says about termination, and providing a notice of cancellation rights in those situations is a federal requirement, not a courtesy.