What a 3D Walkthrough Package Includes (and What to Confirm in Writing)

Quick answer: A 3D walkthrough package normally covers modeling, camera path, materials and lighting, rendering, editing and one delivered video in a named format, with a defined number of revision rounds. Still frames, vertical cuts, extra spaces, sound design and model ownership are the items most often assumed but not included. Confirm those five in writing.

This page is a scope checklist rather than a sales page. For the service itself, see 3D walkthrough production.

Normally included

• 3D modeling of the spaces in scope, built from your drawings.
• Camera path design and a blocking pass for approval before final production.
• Materials and finishes applied from your schedule or from agreed reference imagery.
• Lighting for a single agreed time of day or lighting condition.
• Rendering at a stated resolution and frame rate.
• Editing into a single continuous piece at an agreed runtime.
• A defined number of revision rounds, with a written definition of what constitutes one round.
• Final delivery in one named format, usually horizontal video at a stated resolution.

Usually charged separately

None of the following are unreasonable to charge for. The problem is discovering them after delivery, when the leverage is gone.

• Still frames. Images pulled from the same model. Inexpensive when scoped up front because the model already exists. Priced as new work if requested later.
• Vertical or square cuts. Social formats are a separate export and often a separate edit, because a vertical crop of a horizontal camera path frequently does not read.
• Additional spaces or unit types. Each new space is modeling work, not a revision.
• A second lighting condition. Day and dusk versions of the same walkthrough are two renders.
• Sound design or voiceover. Often assumed to be part of a video deliverable. Frequently is not.
• Furniture and styling changes after the material stage has been approved.
• Site context and landscaping if the original scope was interior only.
• Rush handling when a date moves forward after kick off.

The five clauses worth confirming

1. What counts as a revision round

The single most common source of disagreement. A round should be defined as one consolidated set of notes delivered at a defined gate, not as a single change. Without that definition, three emails on three days can be counted as three rounds, and the buyer usually has no argument.

2. How mid production drawing revisions are handled

If your architect issues a revision in week three, is that a revision round, a change order, or absorbed? There is no universally correct answer, but there is a correct time to agree it, which is before kick off.

3. Deliverable formats, listed explicitly

Resolution, frame rate, file format, and every cut you need. Write the list. If a vertical version is required for a paid campaign, it belongs in the contract, not in an email after delivery.

4. Model retention and reuse rights

Ask two questions: does the studio keep the model, and what may you do with the final files. Retention matters because a phase two, a finish update or an interactive version later is cheap if the model exists and expensive if it must be rebuilt. Reuse rights matter because a campaign asset frequently outlives the campaign it was made for.

5. What happens after final delivery

How long files are hosted, whether source files are available, and at what cost. Studios have different policies and all of them are defensible. Not knowing yours is what creates the problem.

Comparing two quotes properly

Put the two proposals side by side and fill in the same eight rows: number of spaces, runtime, resolution, still frames included, vertical cut included, revision rounds and their definition, handling of drawing revisions, and model retention. Price differences that looked arbitrary usually explain themselves within about ten minutes.

If one quote is materially cheaper and matches on all eight rows, that is a genuine difference in cost structure and is worth taking seriously. If it is cheaper because four of the rows are blank, it is not cheaper.

Adjacent deliverables to price at the same time

Two items are much cheaper when quoted alongside the walkthrough than after it. Layout communication is best handled by 3D floor plans, produced from the same drawings. And if any part of your audience will be evaluating the property remotely and at their own pace, an immersive version built on the walkthrough model is worth pricing while the model is still open. See virtual reality for where that is commercially justified.

Neither is mandatory. Both are significantly more expensive as a separate project six weeks later.

Who owns the files afterwards

The clause most often skipped is the one about the source scene, not the video. Almost every package delivers the rendered output. Far fewer transfer the project file, the material library and the camera setup, and those are what determine whether next year's update is a small edit or a rebuild. If your building will be marketed for more than one season, or if the unit mix or finish palette is likely to change, the right question at quoting time is what it costs to update the walkthrough in twelve months, not what it costs to own the file today.

The second clause worth reading is usage. Some quotes license the output for the developer's own marketing only, which becomes a problem the moment a brokerage, a listing portal or a hotel operator wants to run it. Neither of these points is unusual or adversarial. They are simply cheaper to settle before production than after, and a studio that answers both clearly is telling you something useful about how it works.