Ask who owns it.Get the record back.

Short answer up front: there is no published ranking of Tampa multifamily owners by assessed value. I searched for one — local business-journal lists, county financial reports, and academic/watchdog studies — and the rankings that actually exist are by unit count, usually at the metro or national level, not by what the Hillsborough County Property Appraiser has on the tax roll. Assessed value per owner would have to be compiled by hand from parcel records, and it's genuinely hard to do because most large apartment complexes are held in single-purpose LLCs (one LLC per property), so the owner names on the tax roll don't match the parent companies.

Here's what I could verify from public reporting, which gives a reasonable picture of who the biggest multifamily owners in the Tampa market are:

Likely at or near the top:

- Camden Property Trust (NYSE: CPT) — the Houston-based REIT has long been one of the largest apartment owners in the Tampa market. Its Florida portfolio is roughly 25 communities and 9,000+ apartment homes, and Camden has said Tampa is the leader among its Florida markets. It's still actively buying (e.g., a 360-unit Clearwater community for ~$138.7M in 2025). As a REIT that holds Class A properties long-term, it very likely ranks at or near the top by assessed value. - American Landmark Apartments — headquartered in Tampa, ~32,000 units across the Sun Belt (No. 34 on the 2025 NMHC Top 50 owners list), and it has claimed the title of largest multifamily owner in Florida by portfolio size. A meaningful share of its portfolio is in Tampa Bay. - Blackstone and Greystar — named in 2025 reporting (Private Equity Stakeholder Project data covered by the Tampa Bay Times and others) as the largest private-equity apartment owners with significant Tampa Bay holdings. PESP found private equity firms own about 56,700 units, roughly 23–25% of all Tampa Bay apartments — the highest cost-burden growth of any large metro.

Other frequently cited large owners/operators in the market (from local news coverage, without reliable per-owner totals): Independence Realty Trust (IRT), Cortland, ZMR Capital (Tampa-based), TLR Group (Tampa-based), Robbins Property Associates, Bell Partners, and Related Group on the development side.

One assessed-value data point I did find: on Hillsborough County's official 2024 "Top Ten Taxpayers" list, the biggest taxpayers are Tampa Electric (~$3.84B taxable value), the Aviation Authority, and WST Water Street LLC (the Vinik/Cascade Water Street Tampa development, which includes apartments but is mixed-use). No pure-play apartment owner appears at the very top of the county-wide list, which tells you multifamily ownership here is fragmented across many entities rather than concentrated in one dominant taxpayer.

If you need the actual by-assessed-value ranking, the only way to get it is to build it: download the Hillsborough County tax roll (free from the Property Appraiser at hcpafl.org, or the Florida DOR's NAL file), filter to multifamily use codes, and group parcels by owner mailing address (mailing address is more reliable than owner name because of the LLC-per-property problem). I'd treat any list that hasn't done that aggregation — including my list above — as an informed approximation, not a definitive ranking.