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Structural Letters for Permits in Texas
The sealed letter a building department asks for when an alteration affects structure: wall removal, a new opening, a header or beam, or a change a plans examiner has questioned.
What it is
Structural Letters, in plain terms
The sealed letter a building department asks for when an alteration affects structure: wall removal, a new opening, a header or beam, or a change a plans examiner has questioned.
A structural letter is the short form of a sealed engineering deliverable. It exists because a great many projects change something structural without justifying a full set of drawings: a load bearing wall comes out, an opening is widened, a beam has to be sized, a plans examiner has asked a single question and will not issue the permit until an engineer answers it.
What makes it a letter rather than a plan set is scope, not rigor. The loads are still traced, the member is still sized, the bearing and the load path down to the foundation are still checked, and the engineer still seals the result. What is omitted is everything the permit does not turn on.
The most common version in Texas residential work is wall removal. A wall carries a roof or a floor above it, or it does not, and the difference is settled in the attic rather than by looking at the wall. Once the load path is established the letter states the beam, the bearing at each end, and what has to happen at the posts below.
Who orders one
The people who need this document
- Homeowners and remodelers who have been told the permit needs an engineer's letter
- General contractors opening up a plan in an existing house
- Architects and designers who need one member or one condition sealed
- Property owners answering a plan review comment from a building department
- Contractors correcting work that was done without a permit and is now being inspected
The deliverable
What arrives at the end
- A signed and sealed letter stating the condition reviewed, the loads applied, the member or detail specified, and the code edition it was checked against.
- A sketch or detail where the words alone would leave a framer guessing, drawn to be built from rather than to be admired.
- A PDF formatted for the permit file, addressed to the authority having jurisdiction where that is what the reviewer expects.
What an order asks for
Worth having to hand. Nothing here is unusual, and an order that arrives with it moves without anybody having to telephone back.
- Why do you need this
- What kind of property
- What does the letter need to say, and who asked for it
- Everything you have about the structure
Where it matters most
Regions where this work carries the most weight
Coverage is statewide. These are the regions whose conditions put this service near the front, and why.
Greater Houston
Dense municipal permitting means alterations routinely need a sealed letter.
Dallas Fort Worth
Dense municipal permitting means most alterations need something sealed.
San Antonio
Active municipal permitting across the region's incorporated cities.
Austin and Central Texas
Demanding municipal review makes sealed documentation routine.
Questions
Common questions
- When does a Texas building department require a sealed letter?
- It varies by jurisdiction and by scope. Removing or altering a load bearing element, adding an opening in a shear wall or a masonry wall, and changing the load path in any way are the usual triggers. Many departments will tell you plainly at plan review, and it is worth asking before the wall comes out.
- Can a letter be issued without anyone visiting the site?
- Rarely, and it is usually a mistake to try. The letter turns on what is actually there: span, member size, bearing, what is above. An engineer who seals a member based on a homeowner's description of the attic is sealing a description, not a structure.
- What if the wall is already out?
- It is still solvable, and it is a common enough situation. The engineer evaluates what is in place now, states what is required, and specifies the remediation. Work performed before review is more expensive to resolve, not impossible to resolve.
- Is a letter cheaper than a full plan set?
- Usually, because it is a smaller scope. The judgment worth making is not which is cheaper but which the permit needs. A letter covering a project that genuinely needs drawings will be rejected at review, and the project pays for both.
Start a job
Tell us what the letter is for and we will tell you yes or no
Send the address, what the document is for, and the date it has to be in hand. Some jobs this firm cannot take, and you will hear that in the first conversation rather than after you have paid and waited.