How interior and landscape design fees actually work, and what that number buys you

Every homeowner considering a design project eventually asks the same question and rarely gets a straight answer: how does this actually get priced. The truth is that design fees are not one number, they are a structure, and understanding that structure is the fastest way to have a productive first conversation with any designer, including us.

The four common fee structures

Most designers price their work using some combination of four models. Hourly rates charge for a designer's time directly, and in the Dallas market those rates commonly fall between $125 and $300 or more per hour depending on experience and the scope of a firm's services. This model rewards transparency but makes total project cost harder to predict upfront, which is why it works best paired with a clear estimate of hours by phase.

Flat fees quote a single price for a defined scope, which works well once a project's boundaries are clear, a single room, a full home, a specific phase like concept and material selection. The tradeoff is that any change in scope typically requires a formal adjustment to the fee, so a clearly written scope of work matters as much as the number itself.

Cost-plus pricing marks up the furnishings, materials, and products a designer sources on a client's behalf, typically in the range of a fixed percentage over trade cost. This model aligns a designer's compensation with the value of what is actually being sourced and installed, though it means total cost is not fully known until sourcing is complete.

Retainer or deposit structures reserve a designer's time upfront, applied against the total project fee. This is less a distinct pricing model than a payment structure layered on top of the others, and most contracts include some version of it to protect both parties' time.

The hybrid model most studios actually use

Most established studios use a hybrid of these rather than a single model, often a flat design fee for the concept and planning phase, cost-plus on furnishings and materials, and an hourly rate for ongoing oversight once installation begins. The American Society of Interior Designers publishes guidance and contract templates covering these structures for the profession broadly, and many designers reference ASID's framework when drafting their own agreements.

This hybrid approach exists because each phase of a project has different economics. Concept work is genuinely time-based and benefits from a flat fee that removes the pressure to watch the clock. Sourcing and procurement involve real markup value the designer is providing through trade access. Construction-phase oversight is unpredictable in duration and suits an hourly rate that reflects the actual time spent solving problems on site.

How landscape design fees work

Landscape design follows similar logic, with one structure that shows up more often here than in interior work. Hourly rates for landscape designers commonly run $50 to $300 per hour, and licensed landscape architects, who carry design liability for grading, drainage, and code compliance, more often bill $100 to $500 per hour or price the design as a percentage of total construction cost.

Flat fees for a full residential landscape design typically fall between $3,500 and $8,000 for a standard scope, with a smaller, single-zone project running $1,500 to $3,500. On larger projects, percentage-based fees are common, generally 10 to 20 percent of total construction cost. The American Society of Landscape Architects is a useful resource for understanding how these models work across the profession.

Firms that build a full site analysis, detailed planting design, and ongoing construction oversight into their fee, rather than delivering a plan set and stepping back, generally price above these baseline ranges. For a quarter-acre lot, a full-depth landscape design commonly runs in the neighborhood of $15,000, a reflection of that level of depth and involvement rather than a drawing handed off without further engagement.

Interior and landscape design are offered as separate services at Avesso Studio that can also be integrated, and each is scoped and priced based on what a project actually needs. A homeowner combining both typically sees a coordinated concept and planning fee up front, with construction-phase oversight for both billed on the same hybrid model as interior installation.

What the fee is actually paying for

A design fee is rarely just about picking finishes. It covers the hours spent understanding how a family actually lives, coordinating with contractors and tradespeople, sourcing materials that meet both the aesthetic and the budget, and catching problems before they become expensive mistakes during construction. Design oversight, the ongoing presence that ensures a design is installed as intended, is often the single most valuable and least visible part of what a fee covers, and it is frequently the part clients underestimate until a project without it goes sideways.

Vendor relationships and trade discounts also factor in. A designer's access to sources outside the retail market can offset a meaningful portion of the fee, even before accounting for the cost of mistakes avoided, a wrong material order caught before installation, a scheduling conflict resolved before it delays a project by weeks.

Questions worth asking before you sign anything

Before committing to a designer, ask directly how they structure fees, what is included at each phase, and how change orders or scope adjustments are handled. Ask what happens if a project's timeline extends significantly beyond the original estimate, and whether design oversight continues through the full installation or ends at handoff to a contractor. A designer who answers this plainly, without hedging, is telling you something important about how the rest of the relationship will go.

What this looks like at Avesso Studio

We are direct about pricing from the first conversation, because a client who understands the structure makes better decisions throughout the project, not just at the start.

Schedule a Discovery Call, a complimentary conversation to see if we are the right fit for your project.

With clarity and care, Avesso Studio

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