Working With Excelize / Engagement Models

Three Ways to Work With Excelize: Time & Materials, Dedicated Studio, or Per-Project

Q: How do I know which model is right for my project?

It depends on scope certainty more than project size. A large project with a clearly defined deliverable can still be Per-Project. A small project with evolving requirements may be better suited to T&M. This gets scoped directly during a Discovery Session.

Q: What happens if we need a revision after the 30-day support window closes?

Post-window revisions are scoped and priced as a new engagement, T&M for open-ended changes or Per-Project for a defined update, rather than folded silently into the original deliverable.

Q: What format are clash reports delivered in, and does it work with our existing tools?

BCF format, compatible with Autodesk Construction Cloud, BIM 360 Coordinate, and BCF-based coordination environments, so reports import directly into your existing issue tracking.

Q: How fast can a team actually scale up on a new engagement?

Team scaling begins within 48 hours of kickoff, drawn from a standing team rather than new recruitment, though full onboarding to your specific standards and BEP follows the process outlined during Discovery.

Q: Does the engagement model affect the BIM Execution Plan or QA/QC process that applies?

No. The same BEP, checkpoint structure, and senior engineer sign-off process applies regardless of commercial model. The model changes how the work is billed and structured, not the standard it's held to.

Scope still evolving, ongoing capacity needed, or one clearly defined deliverable, each gets its own structure, not one contract stretched to fit all three.

The wrong engagement model doesn't just cost more, it creates friction that has nothing to do with the BIM work itself. A fixed-scope contract on a project still moving through design iterations means constant change orders. A dedicated retainer for a single deliverable means paying for capacity that sits idle. Excelize structures around how defined your scope actually is, not a single default contract adjusted after the fact.

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Compare the three models

Scoped in a Discovery Session, not in the abstract What drives cost

Engagement Models

Three ways to work with Excelize

Time & Materials

For work where scope is still taking shape, phased renovations, projects moving through design iterations, or coordination needs that depend on decisions not yet made.

Billed against actual hours and deliverables, not a scope locked in before the work starts
Scope shifts as the project develops, without a formal change-order cycle for every adjustment
Right fit when requirements are genuinely uncertain, not when uncertainty is really an unscoped project in disguise

Dedicated BIM Studio

For firms with ongoing, recurring BIM demand across multiple projects, not a single deliverable.

A consistent team, fixed monthly cost, standards and templates retained across every project the team touches
Available fully remote, or as the Onshore + Offshore Team Model, with an on-site BIM project manager working inside your team's hours for faster on-the-ground communication
Right fit for GCs running concurrent bids or MEPF firms extending in-house coordination capacity

See the full Dedicated BIM Studio model

Per-Project

For a single, clearly scoped deliverable with defined requirements, a fixed cost and timeline agreed before work starts.

Scope, LOD, and deliverables set in the BIM Execution Plan upfront, priced as a fixed engagement
Predictable budget and delivery date, in exchange for less flexibility if scope changes mid-engagement
Typical timelines scale with complexity: small residential coordination runs 1–2 weeks, mid-size commercial with full MEPF coordination typically 4–8 weeks, large healthcare or industrial with dense MEPF systems 8–20 weeks, confirmed during scoping, not estimated after the fact

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One Delivery Standard

What's included in every engagement, regardless of model

The commercial structure changes. The delivery process doesn't.

Team scaling within 48 hours of kickoff

Drawn from a standing team of Revit modelers, BIM coordinators, MEPF engineers, and QA reviewers, not recruited per project.

A client QA round in every engagement

Built in before final handover, with senior engineer sign-off on all models, not just a modeler's self-review.

Clash reports issued in BCF format

Working inside your existing Autodesk Construction Cloud, BIM 360, or BCF-based coordination environment, so reports import directly into your issue tracking without reformatting.

A 30-day post-delivery support window

After final handover, for revision requests and questions that come up once your team is working inside the deliverable.

A project walkthrough call at handover

Not just a file transfer.

98% on-time delivery rate

Across all projects, tracked as a standing operational benchmark, not a per-engagement estimate.

Pricing Logic

What actually drives cost within any model

The same variables drive cost regardless of which model is chosen:

01 Scope certainty

A clearly defined deliverable prices more predictably than a scope still being worked out, which is why scope certainty drives model choice in the first place, not just the price inside it.

02 Project complexity and LOD

Fabrication-ready LOD 400 work carries more coordination depth than an LOD 300 design-development pass. LOD 500, field-verified as-built capture, applies at handover or on Scan to BIM-based existing-conditions work.

03 Review and checkpoint intensity

A healthcare engagement's clinical planning checkpoint or a multifamily project's template sign-off gate adds rigor a standard federated review doesn't carry.

04 Duration and continuity

A one-time deliverable and an ongoing multi-project engagement carry different cost structures by nature, a dedicated studio's fixed monthly cost assumes continuity a single per-project engagement doesn't need.

None of this is negotiated in the abstract. It's scoped specifically for your project during a Discovery Session, before a number gets attached to anything.

Proof First

See the work before you commit to a model

Request a sample deliverable package, a real BIM Execution Plan, models, clash reports, and QA documentation from past project work, before deciding which engagement structure fits.

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FAQs

Engagement Models: common questions

For questions on data handling, ISO 19650 alignment, or getting started with a sample project, see our Industries FAQ →

Still have questions? Book a Discovery Session

It depends on scope certainty more than project size. A large project with a clearly defined deliverable can still be Per-Project. A small project with evolving requirements may be better suited to T&M. This gets scoped directly during a Discovery Session.

Yes. It's common for a project to start Per-Project for an initial defined deliverable, then move to T&M or Dedicated Studio if ongoing work follows. This is agreed in writing when it happens, not assumed.

Post-window revisions are scoped and priced as a new engagement, T&M for open-ended changes or Per-Project for a defined update, rather than folded silently into the original deliverable.

BCF format, compatible with Autodesk Construction Cloud, BIM 360 Coordinate, and BCF-based coordination environments, so reports import directly into your existing issue tracking.

Team scaling begins within 48 hours of kickoff, drawn from a standing team rather than new recruitment, though full onboarding to your specific standards and BEP follows the process outlined during Discovery.

No. The same BEP, checkpoint structure, and senior engineer sign-off process applies regardless of commercial model. The model changes how the work is billed and structured, not the standard it's held to.

Find the right model for your project.

Three structures, one delivery standard. Whichever fits your scope, the process behind it doesn't change.

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