Why Austin Live Oaks Shed in Spring

What the city’s tree inventory shows

The City of Austin maintains a public inventory of over 62,000 trees. Counting the entries for Southern live oak and Texas live oak together, live oak is the most common species in it by a wide margin — ahead of cedar elm, pecan and Ashe juniper.

Why a live oak sheds in spring

It is semi-evergreen rather than deciduous. It holds its leaves through winter and drops the old ones only when the new growth pushes them off, which in Central Texas happens in early spring. At the same time it releases catkins — long, stringy flower tassels that mat together in a gutter far more effectively than leaves do.

So an Austin gutter fills in March and April, and then sits full through May and the spring storms.

What a blocked gutter costs

• Water backs up under the bottom course of shingles, reaching the decking and the fascia board behind the gutter.
• Fascia is usually softwood. It rots slowly, invisibly from the ground, and replacing it means taking the gutter down and cutting out timber — several times the price of the cleaning that would have prevented it.
• Overflow lands against the foundation. Austin’s clay soils move dramatically with moisture, and foundation movement is the most expensive problem a house here can have.

Gutter guards, honestly

They help and they do not solve it. Live oak catkins are stringy and mat on top of mesh rather than washing off; Ashe juniper needles are fine enough to pass straight through most guard products. In Austin a guard reduces how often you clean. Any salesperson claiming it eliminates cleaning has not looked at what falls here.

The one change worth making

Move the annual clean to late April, after the live oaks have finished. One correctly timed visit in this city beats two badly timed ones, and it is the cheapest roof maintenance available.

Sources: City of Austin tree inventory and issued building permits; Texas Comptroller of Public Accounts. Public records, retrieved September 2026.

How this was put together, and what it cannot tell you

Two public files, joined locally. The City of Austin publishes every building permit it issues, with an address, coordinates, a date, a work description typed by whoever filed it, and a declared value. The Texas Comptroller publishes every business holding an active sales tax permit, with the date it first reported sales in the state. Neither office joins them to anything; that is the work.

Four limits worth stating plainly, because most sites quoting permit data do not:

• The record starts in 2006. Anything older is not in it, so nothing here describes how Austin roofs behaved before then.
• Small repairs never appear. A permit is required for replacement and structural work, not for patching. The counts are therefore a floor, not a total — and for work like tarping or inspection, which needs no permit at all, there is essentially nothing to count.
• The work description is free text. Somebody typed it. Searching for a category means searching for several spellings of it and accepting that a permit reading only “new roof” lands in no category at all.
• A declared value is not an invoice. It is written before the old roof comes off, which is exactly when nobody yet knows what the decking underneath looks like.

Where a sample is too small to average honestly, this site says so rather than publishing a number with a confident face on it. Every figure here can be reproduced from the same two files by anybody who wants to check.