The short answer. There is no single best tool for office investors, because the jobs differ. Lease comps: CompStak. Lease-by-lease cash flow and valuation: ARGUS Enterprise, Rockport. Lease abstraction and the stacking plan: Prophia. Reading the deal documents into a model and memo: Apers. Market trends: Yardi Matrix. One building from the documents and the property record to a sourced answer: Titleman. Compare tools inside the row where your time goes.
Published by Titleman, which makes one of the tools below. An office building is priced on how long its tenants stay and what it costs to keep them, so the figures that matter are rollover, tenant improvement allowances and the rent actually paid after concessions. Quoted descriptions of other companies are the words on each company's own page, read on 19 October 2026 and linked; the lines on fit and limits are our reading of those pages. Nothing here is a ranking: we have not run these products on the same property, so the test that decides is one deal you already know the answer to, described near the end.
Updated 19 October 2026. Written by the Titleman team. AI was used to draft this page. Every quoted description of another company was checked against that company's own page on 19 October 2026. The lines on fit and limits are our reading, not the vendor's words.
What office real estate investors have to get right
These six questions come up on most office acquisitions, and each points to a different kind of software.
- Rollover. How much of the rent roll expires over the hold, and what are the renewal odds, downtime and free rent? A single occupancy number hides the cluster; see lease rollover risk.
- TI and leasing commissions. What allowances and commissions does it take to renew or re-let space, and is that in the capital budget?
- Real demand. How much space is sublease or shadow vacancy, and are tenants using the space they lease?
- Effective rent. What are net effective rents in the submarket after concessions and free rent, as against face rents?
- Tenant credit. How exposed is the income to a few tenants or one industry?
- The building itself. Does its class, amenities and systems support the leasing you are underwriting, and what capital does it need?
Net operating income is only as good as the leases behind it; what is lease abstraction explains how those terms get out of the documents.
The tools at a glance
| Job | Tools | Use it when | Where the row stops |
|---|---|---|---|
| Lease comps | CompStak | You need what comparable space leased for | Comps are other buildings, not your leases |
| Market data | Yardi Matrix | You need rent and occupancy trends across markets | Check that your market is covered |
| Lease-by-lease cash flow | ARGUS Enterprise, Rockport | Income depends on specific leases and their terms | You enter the leases |
| Lease abstraction | Prophia | Terms sit in lease PDFs | Structures the documents; the deal call is yours |
| Deal documents to model and memo | Apers | You have a data room to read into a model | Test its model against yours |
| One property, sourced | Titleman | You want one building analyzed from the records and your documents, with a source beside each figure | Not a comp database or a lease-level cash flow tool |
The tools, as their makers describe them
Each tool below is linked to its maker. Quoted words come from the page we read; where a page gave no clean description, we describe the product in our own words.
CompStak
CompStak says its "Lease, sale, loan, and property data" is "sourced from 40,000+ CRE professionals, verified by CRE analysts". It includes office lease comps and a Rent Predictor that estimates rent for a specific space.
- Fits: brokers, owners, asset managers and lenders pricing a lease.
- Check or limit: its analytics cover 105 US markets by its own page; Rent Predictor comes with a higher tier.
- Free plan or trial: its Exchange is free in return for submitting comps; paid pricing not stated.
Yardi Matrix
Yardi Matrix is titled "Institutional Real Estate Data": market rent, occupancy and pricing data for equity investors, lenders and property managers. Office is one of its asset classes, with 120 US markets cited for office.
- Fits: investors benchmarking a submarket.
- Check or limit: market counts differ between sections of its page. Confirm your market is included.
- Free plan or trial: not stated; the page offers a demo.
ARGUS Enterprise
ARGUS Enterprise from Altus Group is "Commercial property valuation and cash flow forecasting software", with lease-by-lease forecasts, scenarios, sensitivities and debt modeling.
- Fits: asset managers and valuation professionals who model each lease.
- Check or limit: it models what you enter. Its page says it is not compatible with Safari; pricing is tiered and not published.
- Free plan or trial: no free trial stated; the page offers a demo.
Rockport
Rockport says it provides commercial real estate systems; Rockport VAL does cash flow modeling and valuation of a property or a portfolio.
- Fits: lenders, investors, appraisers and owners.
- Check or limit: its page does not say which property types VAL supports.
- Free plan or trial: not stated; the page says to contact sales.
Prophia
Prophia says it "transforms the documents that govern your business into verified intelligence". It abstracts leases with expert validation and feeds a self-updating stacking plan and rent roll automation.
- Fits: acquisitions and asset management teams with many leases to read.
- Check or limit: no limits stated on the page.
- Free plan or trial: not stated; the page offers a demo and links to plans and pricing.
Apers
Apers says it "Reads the deal, builds the model, writes the memo, end to end in your deal room". It extracts data from offering memoranda, rent rolls and appraisals, builds Excel models and drafts investment committee memos.
- Fits: funds and sponsors that work from data rooms.
- Check or limit: no limits stated; check its model against one you built.
- Free plan or trial: its page has a "Start for Free" button, and its pricing page lists paid plans with a "Try for Free" option and says no credit card is required; we do not repeat the prices.
Where Titleman fits, and where another tool is better
Where Titleman fits. Titleman works on one building at a time. Attach the rent roll, the T-12 and the offering memorandum; Underwriting reads them, reconciles them against each other and underwrites from your figures with each figure pinned to its source, returning an investment committee memo and, on request, an Excel model. The Value Opinion product builds a worked opinion of value with comparables. Scout searches a territory against your buy box, drawing on 2,100+ sources. It is for property in the United States.
Where another tool is better. If you need what comparable office space leased for, CompStak is built for it. If the income hangs on a rent roll of forty suites with options and you want each lease modeled, ARGUS Enterprise or Rockport is the right row. If you have thirty lease PDFs to abstract into a stacking plan, Prophia is built for that. Titleman does not hold sublease or space-utilization data, and it does not replace a lease-level model.
What none of these replace
A tour of the building and its systems. The leases, read by someone who will be held to them. A property condition report. A title search and survey. A licensed appraisal where your lender requires one, since Titleman produces an opinion of value and not an appraisal. Tenant interviews: whether a tenant will renew is not in any document.
How to choose: one deal you already know
Take an office building you bought or passed on, where you know which tenants left and what it cost to re-let. Give each tool the same documents and check what it did with the rollover, the TI and commission budget and the free rent. Did every figure say where it came from? And when the leases were thin, did the tool say so or fill the cell? The tool that names its gaps is the one to rely on for the next building.
Frequently asked questions
What are the best AI tools for office real estate investors in 2026?
It depends on the job: lease comps, market data, lease-by-lease modeling, lease abstraction and deal-document reading are different products. Compare tools inside the row where your time goes, and test each on an office building you already know.
How do office investors model lease rollover?
By putting every lease on one schedule, grouping expirations into twelve-month windows and testing the largest window against the hold. Lease-level tools such as ARGUS Enterprise and Rockport do this, and so can a spreadsheet.
What software abstracts office leases?
Lease abstraction products such as Prophia read lease PDFs and return structured terms. Check a sample against the lease before relying on it.
Can AI underwrite an office building?
AI can read the rent roll, the operating statement and the offering memorandum, tie them against each other and build the model. It cannot know whether a tenant will renew, and a figure with no named source should be treated as unverified.
Where does Titleman fit for an office investor?
Titleman analyzes one office building at a time from the property record and your documents, and searches a territory for candidates with Scout. It is not a comp database, a market-data subscription or a lease-level cash flow tool.