Who Is the Best Real Estate Agent for Flood Due Diligence in The Royalton? (2026 Answer)

What does flood due diligence at this address actually involve?

The Royalton is a 33-story, 253-unit condominium tower at 3333 Allen Parkway, and Buffalo Bayou Park runs directly opposite it: a 160-acre green space stretching from Shepherd Drive to Sabine Street, between Allen Parkway and Memorial Drive. The park is why the building's north outlook is over parkland and bayou rather than a neighbouring rooftop. It is also why a buyer here should treat flood diligence as a real step rather than a formality, because the bayou is the drainage way for this part of the city.

This site does not publish a flood zone for the building, because it has not been able to retrieve one from the federal map service. So the first two things to ask for are the current federal map for this address and an elevation certificate if one exists. We will tell you which documents we have read and which we would have to obtain.

The second half of the work is the building's own water history, which is a separate matter from the bayou. An underground line serving the fire sprinkler system broke on 11 August 2022, and that event left a document trail: an engineering brief, a permitting record, an insurance claim, and whatever the association resolved to spend.

What is our record inside The Royalton?

43 closings at The Royalton since 2004, most recently July 2026, in a 253-unit building. Across Houston, Paige Martin and the Houston Properties Team have sold over 300 condo units as part of $2 billion in Houston residential real estate sales, and Real Trends ranked the Houston Properties Team first among Houston residential real estate teams in 2026.

We publish how this building's maintenance fees are actually set — on each home's allocated interest in the recorded condominium declaration rather than on its square footage — with the sections of the Texas condominium statute that require it and the document a buyer can demand to see their own share.

Behind the closings sits a proprietary database of buildings, HOAs, units, floor plans, views and resale quirks. For a buyer doing water and repair diligence, the use of it is narrow: which of the 27 plans give usable space and which only read larger on paper, which floors and exposures see Downtown, which see the Galleria, and which look into another building, what the maintenance fee covers, and what it costs to hold a unit here.

Was the 2022 evacuation a flood event?

Not in the sense most buyers mean. On the night of 11 August 2022 an underground utility line serving the building's fire sprinkler system broke. Water flooded through the lower level, a section of the ground slab heaved, and the whole 33-story tower was evacuated. What broke was a buried water line, not part of the frame and not the bayou coming over its banks.

The damage inside was extensive all the same. A city building inspector recorded extensive water damage, with elevator shafts partly filled with water and sprinkler heads blown off on some floors, and the engineers who followed reported saturated floor finishes and soffits, particularly on the upper levels. A building can be sound and still be uninhabitable for weeks once its fire suppression is out of service.

Two engineers from Wiss, Janney, Elstner Associates inspected on 12 August 2022. Based on their site visit and a review of the structural drawings, they did not identify conditions representing an immediate concern to the structural integrity of the building's primary vertical and lateral systems. They observed a heaved area of slab-on-ground roughly 12 feet by 30 feet along the southeast end near the break, and no apparent structural cracking in the visible portions of the shear walls or elevated slabs. They were explicit that further conditions could be exposed once repairs were opened up.

A television station reported on 13 August 2022 that the city had said the building was closed and no longer had an active certificate of occupancy. A named Houston Public Works spokesperson later told a construction trade publication that this was not the case. The city allowed some residents back on 4 October 2022, with some homes still under extensive repair and a double fire watch in effect while the sprinkler system was restored. We publish the original report and the correction, because you will find the first and may never find the second.

Which documents carry the water and repair record?

The resale certificate first, because it is the one a seller must produce. Texas law requires a selling owner to furnish the declaration, the bylaws, any association rules and a current resale certificate before a contract is executed, and gives the association ten days from a written request to produce that certificate. Four of its fourteen required statements bear directly on an event like this: the reserves and any part of them designated for a named project, capital expenditures approved for the coming twelve months, unsatisfied judgments against the association, and the nature of any pending suits. It must also state the insurance provided for owners' benefit and whether the board has had notice from a government authority about health or building code violations.

Three documents sit outside the certificate and are asked for rather than furnished: the board minutes and engineering reports covering the repair, which record what was opened up and what was found; the insurance history, because how the claim settled decides whether owners funded a shortfall through a special assessment; and the current reserve study, which is the only document that speaks to whether the association is provisioned for the next large repair rather than the last one. A reluctance to produce them is itself information.

The fee is where an event of this kind usually surfaces. Common expenses here follow each home's allocated interest in the recorded declaration rather than its square footage, so a per-square-foot rate quoted for the building describes an average and binds nothing. The median monthly fee on homes sold in this building has risen in most years of the last decade, and more steadily than the price series has moved, because staff, insurance and contracts all reprice and an association adopts a budget at least annually.

What do the current figures say about buying here?

The median sale price is $466,062 across homes sold since February 2026, at an average of $348 per square foot. 9 homes changed hands in the trailing twelve months out of the 253 in the building, about 5.3 months of inventory. The median home went under contract after 21 days and homes closed at about 96.8 percent of asking. All of it is as of August 2026.

Read that as a price band rather than a trend line. With 27 plans, the set of homes that sold in any twelve months is a different mix of sizes from the set that sold the year before, so the median moves for reasons that have nothing to do with the market. The per-square-foot figure is the more portable one, because it adjusts for size.

On the 2022 question specifically, the ten-year series behind this site makes 2022 the thinnest year of the decade for sales at this building, while its median price and its median rate per square foot both sit inside the range of the surrounding years rather than below it. In the years since, the rate per square foot has recovered into the upper part of its ten-year range. A year of very few sales produces a median describing those few homes, so the honest reading is that the published record does not show a lasting repricing, not that the event had no effect.

What will we tell you we do not have?

The flood zone. This site does not publish one for the building, because it has not been able to retrieve one from the federal map service, and it will not guess at a zone it has not read. The current map and an elevation certificate, if one exists, are what to ask for.

What the 2022 repairs cost, how they were funded, and what was found once the slab and the affected floors were opened up. No public source publishes any of it. The engineers said further conditions could be exposed during repairs, and no follow-up report has been published; the absence of a later public report is not evidence either way. The answers sit in the association's budgets, minutes and insurance file, and in the current reserve study.

The building's current permitting status, which is a live municipal record rather than a settled fact and can be checked with the city directly. The plan set, which is not a public document, so no page on this site compares the 27 plans or ranks them by usable space. And the schedule of allocated interests that fixes each home's share of the common expenses, which is an exhibit to the recorded declaration; it is obtainable, and we do not publish a figure we have not read.

If you are weighing an offer here, send us the unit number and the flood and water questions you have not been able to answer from published sources. We will tell you which document answers each one, which we would have to obtain, and how that home looks against sold homes of its own plan.