R.E. Cost Seg vs. Basis: Which Fits Your Property?

What R.E. Cost Seg does well

R.E. Cost Seg, at recostseg.com, runs a modern, remote-first cost segregation model. Its public site describes a fully engineered study option, a lighter "rapid report" tier, Form 3115 preparation for look-back studies (a study on a property owned for years, claimed through a form that lets the missed depreciation arrive as one catch-up deduction rather than amended returns), and a savings calculator on the homepage. It cites a large volume of completed properties and total dollars identified across its client base, and its published reviews mention a virtual site visit done by video call in place of an in-person walkthrough, along with customers describing the process as quick and simple across property types including short-term rentals and retail facilities. Details about R.E. Cost Seg come from its public materials as of August 2026; tell us if something is out of date.

That is a genuinely close model to Basis's, and it deserves a straight answer: a video-call site visit is a real convenience over scheduling an in-person walkthrough, and R.E. Cost Seg has clearly built volume serving both commercial and short-term rental owners across the country. A firm that has completed thousands of studies has real institutional knowledge about how different property types classify, and that experience is worth acknowledging directly rather than waving away. None of that is a shortcut, either; a video-call site visit is still a real engineered process, not a substitute for engineering depth.

Where Basis's STR process goes a step further

Basis's short-term rental and residential process skips the video call entirely. The Airbnb or VRBO listing photos an owner already has feed the component classification directly, no scheduling, no walkthrough, no owner homework. For an owner managing a rental from a distance, or juggling several properties across different states, that is one fewer call to coordinate and one fewer window to find on a calendar.

It also removes a dependency that a video call inherently carries: someone has to be on-site holding the camera, walking the property room by room while a reviewer watches remotely. Listing photos already exist because the owner needed them to rent the property in the first place. The study simply reuses documentation that was created for an entirely different purpose.

The guarantee and the number-first approach

Where the two firms differ most is the floor underneath the number. Basis guarantees at least 20 times the fee in first-year deductions on commercial property, or at least 30 times on a short-term rental, or the study is free. And before any commitment, a free Preliminary Benefit Estimate models the likely number for your specific building. The 60-second qualifier at /qualify is the entire ask, with no proposal request form or scheduled call required first.

A delivered residential example: a single-family rental in Montgomery County, Pennsylvania, built 2013, 4,946 square feet, had a depreciable basis of $1,040,000. The study identified $160,242 in accelerated basis, 15.4% of the total, and estimated first-year depreciation of $174,905, 16.8% of basis including 100% bonus. The fee was $1,295, putting the ratio around 135 to 1, well above the guarantee floor for a short-term rental. That ratio is the practical result of a small, fixed residential fee set against a deduction that scales with the building, the same dynamic that shows up on every property type Basis studies, commercial or residential.

The guarantee is what turns that dynamic into a real commitment rather than a description of how the math tends to work out. A floor means the study either clears it or it costs nothing, which shifts the risk of an unusually simple building away from the owner and onto the firm doing the engineering.

Budget and full tiers, and what that buys

Basis offers two engineered tiers, a full study and a budget study, both delivering the same 70-page engineered report format, both Audit Techniques Guide aligned. That means an owner with a straightforward property is not paying full scope for a simple building, while a more complex commercial property still gets the deeper review it needs. See why owners choose Basis and how the broker-model economics work, engineered fulfillment behind a single point of contact, rather than building an in-house engineering team from scratch for every study and passing that overhead into every fee.

A rapid or lighter-scope report from any firm can be the right call on a simple property. The question worth asking is whether that lighter tier still comes with a full 70-page engineered report behind it, or whether it trades documentation depth for speed. That distinction matters more on an exam than it does on the invoice.

Getting your number

Both firms can produce a real engineered study. The fastest way to compare them on your actual property is to see the number first. Run the free qualifier at /qualify to get Basis's estimate, then weigh it against any quote or calculator result from elsewhere, including whatever proposal a video-call intake produces on the same building.

There is no cost to running both, and comparing two real numbers on your own building beats comparing two firms' marketing pages against each other. Ask each firm the same three questions: is the number a floor or an average, does the study price differ by tier, and what does the process actually require of your time. The building itself, not the sales process, is what actually determines the deduction.

Frequently asked questions

Does R.E. Cost Seg require a site visit?

Its public materials describe a virtual model using video calls in place of an in-person visit, based on its site and published customer reviews as of August 2026, covering both commercial and short-term rental properties.

Does Basis's STR process require a video call?

No. Basis classifies short-term rental components from the owner's existing Airbnb or VRBO listing photos, with no video call, site visit, or owner homework required at any point in the process.

What is a rapid report versus a fully engineered study?

These are tier names some firms use for a lighter-scope versus deeper-scope engineered study. Basis uses similar tiering, a budget engineered study and a full engineered study, both delivering the same 70-page ATG-aligned report format regardless of tier.

How does the Basis guarantee compare to advertised average savings?

Basis guarantees a floor, at least 20 times the fee on commercial or 30 times on an STR, or the study is free, rather than advertising an average outcome across a client base. A floor and an average measure different things; ask any firm which one it is quoting you.