Do you need an architect to design a custom home in Texas?

No. Texas law exempts a single-family house from the architect registration requirement, with no square-footage or height limit attached. Occupations Code Section 1051.606(a)(4)(B) covers plans for "a single-family or dual-family dwelling or a building or appurtenance associated with the dwelling." The exemption is conditional, but the condition is about titles, not drawings.

That is the short answer, and it is the opposite of what most people expect. The longer answer matters more on a custom build in Dallas-Fort Worth, because a second statute — the one governing engineers — is narrower than the architect statute, and the place it narrows is the foundation.

What does Texas law actually require a licensed architect for?

Three categories of building, and a single-family house is in none of them.

Section 1051.703(a) is the list of plans that "may be prepared only by an architect." Quoted in full:

1. "a new building or modification of an existing building intended for occupancy on a 24-hour basis by persons who are receiving custodial care from the proprietor or operator of the building, regardless of the number of stories or square footage of the building"
2. "a new building having construction costs exceeding $100,000" that is to be "constructed and owned by a state agency, a political subdivision of this state, or any other public entity in this state" and "used for education, assembly, or office occupancy"
3. "an alteration or addition having construction costs exceeding $50,000" to an existing publicly owned building used or to be used "for education, assembly, or office occupancy," where the work "requires the removal, relocation, or addition of a wall or partition or the alteration or addition of an exit"

Category one is institutional residential care. Categories two and three are publicly owned buildings. A privately owned house appears nowhere on the list.

The Texas Board of Architectural Examiners publishes a decision aid of its own, titled "When to Engage an Architect or Approved Engineer for Design and Construction Observation," stamped "Revised February, 2024." Among the questions it asks is: "Private single-family dwelling, duplex, farm, ranch, agricultural building or warehouse with limited public access?" The chart states its own basis: "This chart is based on information taken from Tex. Occ. Code §1051.606 and 22 Tex. Admin. Code Subchapter K. For more guidance and information, please consult those provisions."

What exactly does the single-family exemption say?

Section 1051.606 is headed "ACTIVITIES OF CERTAIN PERSONS NOT REPRESENTED TO BE ARCHITECTS," and the heading is the whole point.

Subsection (a) opens: "This chapter does not apply to a person who does not represent that the person is an architect or architectural designer, or use another business or professional title that uses a form of the word 'architect,' and who:" — and then lists the exempt activities. Subdivision (a)(4) covers the person who "prepares the architectural plans and specifications for or observes or supervises the construction, enlargement, or alteration of a privately owned building that is:"

Exempt building type	Size or unit limit in the statute
"a building used primarily for ... farm, ranch, or agricultural purposes" or "storage of raw agricultural commodities"	none stated
"a single-family or dual-family dwelling or a building or appurtenance associated with the dwelling"	none stated
"a multifamily dwelling"	"not exceeding a height of two stories and not exceeding 16 units per building"
"a commercial building"	"does not exceed a height of two stories or a square footage of 20,000 square feet"
"a warehouse that has limited public access"	none stated

Read the second and fourth rows together. The Legislature attached a two-story cap and a 20,000 square foot cap to small commercial buildings and a two-story, 16-unit cap to small apartment buildings. It attached nothing at all to the single-family or dual-family dwelling. On the text as printed, the dwelling clause draws no distinction between a 1,400 square foot starter home and a 12,000 square foot house on three levels.

There is a separate exemption at Section 1051.606(a)(3) for alteration work: it covers a person who "prepares architectural plans and specifications for or observes or supervises the alteration of a building, unless the alteration involves a substantial structural or exitway change to the building."

So who can draw the plans, and what can they call themselves?

Anyone can draw them. Only a registered architect can describe the work with the word.

Section 1051.701(a) is the prohibition the exemptions are exceptions to: "A person may not engage in the practice of architecture, or offer or attempt to engage in the practice of architecture, as defined in Section 1051.001(7)(A), (B), or (C) unless the person is registered as an architect under this chapter." Section 1051.001(1) defines "Architect" as "a person registered under this chapter to engage in the practice of architecture."

The definition of the practice itself carries the carve-out inside it. Section 1051.001(7)(B) includes "preparing, or supervising and controlling the preparation of, the architectural plans and specifications that include all integrated building systems and construction details, unless otherwise permitted under Section 1051.606(a)(4)." The exemption is not a loophole bolted onto the statute; it is written into the definition of the regulated activity.

What the exemption does not permit is the label. The Board's flow chart puts it directly: "an unlicensed person who wishes to offer or perform design services for any project that qualifies as 'Exempt from Architectural Act' must not use any form of the word 'architect' in connection with the offer or performance of design services. See Tex. Occ. Code § 1051.606 and 22 Tex. Admin. Code §1.123."

That rule, 22 Texas Administrative Code Section 1.123, is titled "Titles." Subsection (c) reads: "No entity other than those qualified in subsections (a) and (b) of this section may use any form of the word 'architect' or 'architecture' in its name or to describe services it offers or performs in Texas." Subsection (b) allows a firm to use the word only if it "employs at least one Architect on a full-time basis or associates with at least one Architect" and that architect exercises supervision and control over architectural services performed by non-registrants. Subsection (d) permits one narrow use by an individual: "A person enrolled in the Architectural Experience Program (AXP) may use the title 'architectural intern.'"

The consequences are real and they are in the statute. Section 1051.801 makes it an offense to engage in the practice of architecture in violation of the chapter, or to advertise or "put out a sign, card, or drawing designating the person as an architect or architectural designer," and provides that "An offense under this section is a misdemeanor punishable by a fine of not less than $250 and not more than $1,000. Each day of violation is a separate offense." Section 1051.452(a) adds an administrative penalty that "may not exceed $5,000 for each violation," again with each day counted separately, and Section 1051.504(a) lets the Board issue a cease and desist order against an unregistered person after notice and a hearing.

So the practical reading: a residential designer or draftsperson may lawfully prepare the plans for your house, and may not market the service as architectural. If the person you are hiring calls themselves an architect, that is a verifiable claim, and the Board maintains a public register.

Does the engineering statute have the same exemption?

It has an exemption, and it is narrower in exactly the place a North Texas build cares about.

Chapter 1001 is the Texas Engineering Practice Act. Section 1001.301(a) states that "A person may not engage in the practice of engineering unless the person holds a license issued under this chapter," and the chapter protects the title "engineer" separately and aggressively at Section 1001.301(b).

Section 1001.056 is the residential exemption. A person or firm is exempt from the licensing requirements "if: (1) a representation that engineering services have been or will be offered to the public is not made or implied; and (2) the person or entity is erecting, constructing, enlarging, altering, or repairing or is drawing plans or specifications for: (A) a private dwelling" — along with small apartment buildings, associated garages, agricultural buildings, and certain single-story buildings of not more than 5,000 square feet.

Then subsection (c) takes part of it back. The exemption "does not apply to a person or entity that is":

1. "providing engineering design or inspection services necessary to comply with windstorm certification standards for a residential dwelling under Subchapter F, Chapter 2210, Insurance Code"; or
2. "providing engineering design relating to constructing, enlarging, altering, or repairing, or drawing plans or specifications for, a residential dwelling slab located on expansive soil that meets the expansive soil classification provisions of the International Residential Code as applied in the jurisdiction in which the residential dwelling is located, unless the construction, enlargement, alteration, repair, or drawing of plans or specifications meets the International Residential Code requirements as applied in the jurisdiction in which the residential dwelling is located."

Subdivision (c)(2) is the sentence worth reading twice if you are building anywhere on North Texas clay. It is not a general requirement that an engineer design every slab. It is a withdrawal of the exemption for slab design on soil that meets the expansive-soil classification of the International Residential Code as that code is applied locally — unless the work meets that jurisdiction's IRC requirements. Which edition of the IRC applies, and how a jurisdiction applies its expansive-soil provisions, is a question for the city or county issuing the permit, and this page does not answer it.

Two related provisions sit alongside it. Section 1001.0031(c) lists what counts as "engineering plans and specifications" for which an engineer is responsible "unless the work is exempt under Section 1001.053 or 1001.056," and item (3) on that list is simply "foundation design." And Section 1001.051 limits every exemption in the subchapter: "An exemption under this subchapter applies only to a person who does not offer to the public to perform engineering services." A firm that advertises engineering cannot rely on the private-dwelling exemption at all.

Can an engineer do an architect's job, or the reverse?

Partly, and the boundary is unusually explicit.

Section 1001.0031(b) states that an engineer "may not prepare or provide a complete, comprehensive set of building plans for a building designed for human use or occupancy unless: (1) the plans and specifications as described by Section 1051.001(7)(A) or (B) are prepared by, or under the supervision of, an architect; (2) the building is part of a project described by Section 1051.601(b) or a building described by Section 1051.606(a)(4); or (3) the engineer has received administrative approval by the Texas Board of Architectural Examiners to practice architecture under Section 1051.607."

Branch (2) is the one that matters here, because Section 1051.606(a)(4) is the exemption list quoted above — the one containing single-family dwellings. On the text as printed, an engineer may prepare a complete set of plans for an exempt house without any of the other two branches applying.

Running the other way, Section 1051.601(a) provides that the architect chapter does "not limit the right of an engineer licensed under Chapter 1001 to perform an act, service, or work within the scope of the practice of engineering," and Section 1051.601(b)(2) specifically preserves an engineer's right to plan, design or supervise "the mechanical, electrical, or structural features of a building." Section 1001.063 is the mirror image: the engineering chapter does not "prevent or otherwise restrict a person licensed as an architect under Chapter 1051, a landscape architect under Chapter 1052, or an interior designer under Chapter 1053 from performing an act, service, or work that is within the definition of the person's practice."

There is also a closed list of engineers who may practise architecture outright. Section 1051.607 requires the Board to maintain a list of licensed engineers authorised to engage in the practice of architecture, and Section 1051.607(b) provides that an engineer "may not engage or offer to engage in the practice of architecture unless" listed and in good standing with the Texas Board of Professional Engineers and Land Surveyors. The qualifying conditions in subsection (c) are historical: the engineer had to apply "not later than January 1, 2012," have been licensed "before January 1, 2011," and document at least three qualifying projects "adequately and safely built before January 1, 2011." The Board publishes the resulting list. Section 1051.607 was added by HB 2284 of the 82nd Legislature; the Board's own guidance states that "Pursuant to HB 2284 (82nd Texas Legislature, effective September 1, 2011), a limited number of professional engineers may render architectural services on nonexempt projects."

Where does the interior designer fit?

Outside the gate entirely, as far as the architect statute is concerned.

Section 1051.604 is two lines long: "This article does not: (1) limit the practice of interior design; or (2) prohibit the use of the title 'Interior Designer' by a qualified person." Section 1051.001(4) defines "Interior designer" as "a person registered under this subtitle to practice interior design," and Section 1051.001(3) defines interior design itself around "non-load-bearing interior construction" and "a non-load-bearing interior space." Registration exists and the statute does not restrict the underlying work or the plain title.

That load-bearing boundary is the useful bit for sequencing a custom build. Interior design, as the statute defines it, stops at the non-load-bearing. Moving a wall that holds the roof up is somebody else's scope.

So who does what, and in what order?

Here is the division as the two statutes describe it. This is a reading of scope, not a project plan, and nothing here is legal advice.

Role	What the statute says they may do on an exempt house	Title protected?	Verifiable register?
Registered architect	Full practice of architecture as defined at Section 1051.001(7)	Yes — Section 1051.701, 22 TAC 1.123	Yes, TBAE
Licensed engineer	Engineering as defined at Section 1001.003; "mechanical, electrical, or structural features of a building" preserved by Section 1051.601(b)(2); a complete plan set for a Section 1051.606(a)(4) building under Section 1001.0031(b)(2)	Yes — Section 1001.301(b)	Licensed by TBPELS; no public search page was read for this article
Engineer on the Section 1051.607 list	Practice of architecture "notwithstanding the requirements of Section 1051.701" per Section 1051.607(e)	n/a	Yes, list published by TBAE
Unlicensed residential designer	Plans and specifications for a single-family or dual-family dwelling under Section 1051.606(a)(4)(B), and construction observation or supervision of the same	No registration, and may not use any form of the word "architect"	No
Registered interior designer	Interior design per Section 1051.001(3); Section 1051.604 does not limit the practice	Title "Interior Designer" expressly permitted to "a qualified person"	Registration exists under Section 1051.001(4)

One provision speaks directly to who leads. Section 1051.703(b): "This section does not prohibit an owner of a building from contracting with an architect or engineer as the prime design professional for a building construction, alteration, or addition project. Designation as the prime design professional does not expand the scope of practice of an architect or engineer beyond the scope of practice that the architect or engineer is authorized to practice under Chapter 1001 or 1051."

The order follows from the scopes rather than from any statute. Somebody establishes the form of the house. Somebody engineers the foundation and the structural, mechanical and electrical systems. Somebody specifies the interior. On an exempt house, the first of those three can be anyone, the second is constrained by Section 1001.056(c)(2) and the local application of the IRC, and the third is unrestricted by the architect statute.

What should you ask before you hire a designer for a custom build?

• Is the word "architect" anywhere in their name, website or proposal? If so, the register answers whether it belongs there. If not, their plans can still be perfectly lawful for your house.
• Who is designing the foundation, and are they sealing it? Section 1001.0031(c)(3) puts foundation design squarely in engineering territory, Section 1001.056(c)(2) withdraws the private-dwelling exemption for slab design on classified expansive soil, and Section 1001.401(b) requires a licensed engineer's seal on "a plan, specification, plat, or report issued by a license holder for a project to be constructed or used in this state."
• What does the permitting jurisdiction require on submission? This is the gap this page cannot close. Section 1001.402 provides that a public official "responsible for enforcing laws that affect the practice of engineering may accept a plan, specification, or other related document only if the plan, specification, or other document was prepared by an engineer, as evidenced by the engineer's seal" — but the statute does not say whether that reaches residential building-permit review, and no city or county submission requirement was read for this page. Ask the city.
• Is anything about the project outside the exemption? The exemption is building-specific. A guest house is "a building or appurtenance associated with the dwelling"; a structure meant for 24-hour custodial care is not a dwelling at all under Section 1051.703(a)(1), "regardless of the number of stories or square footage."
• If the designer is licensed in another state, Section 1051.606(a)(2) and (b) exempt a "legally qualified architect residing in another state or country" who does not open or maintain an office in Texas, but only if the person "employs an architect who is a resident of this state as a consultant" or "acts as a consultant of an architect in this state."

What this page does not answer

• Who decides whether an architect is required on a given project. None of the Board's own published documents read for this page states this — not the flow chart, not the interactive flowchart page, not the page written for building officials and plans examiners. The Board's Consumer Guide page is currently a placeholder reading "COMING SOON!"
• How the Board's flow chart routes a single-family house. The chart's questions and outcome labels are retrievable from the published PDF, but which question leads to which outcome is a graphical relationship this page cannot verify from the document's text, so no routing is described here. The statute is quoted directly instead.
• What the International Residential Code says about expansive soil classification, or which edition any DFW jurisdiction currently applies. Neither was read for this page. Section 1001.056(c)(2) is quoted for what it conditions, not for what the code requires.
• Whether an exemption under one chapter protects against an offense under the other, or how Section 1051.606's "This chapter does not apply" interacts with Section 1051.801's "in violation of this chapter." That is a legal question. A Texas construction attorney answers it; this page does not.
• Fee amounts, plan-review timelines, or residential submission checklists for any DFW city or county. Nothing of the kind was read this run.

Nothing on this page is legal, tax or engineering advice. It describes a process and quotes the documents it comes from.

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Sources read for this page, 26 October 2026

Primary — Texas statute text, Texas Legislature host

• Texas Occupations Code Chapter 1051 (Texas Board of Architectural Examiners; provisions affecting architects, landscape architects and interior designers) — https://tcss.legis.texas.gov/resources/OC/htm/OC.1051.htm — read in three passes at offsets 0, 39,401 and 78,802. Sections quoted or cited: 1051.001(1), (3), (4), (7); 1051.601; 1051.604; 1051.606; 1051.607; 1051.701; 1051.703; 1051.801; 1051.452(a); 1051.504(a).
• Texas Occupations Code Chapter 1001 (Texas Engineering Practice Act) — https://tcss.legis.texas.gov/resources/OC/htm/OC.1001.htm — read in three passes at offsets 0, 39,401 and 78,802. Sections quoted or cited: 1001.003(b), (c); 1001.0031(b), (c); 1001.051; 1001.053; 1001.056; 1001.063; 1001.301(a), (b); 1001.401(b); 1001.402; 1001.552.

Primary — agency publications

• Texas Board of Architectural Examiners, When to Engage an Architect or Approved Engineer for Design and Construction Observation, stamped "Revised February, 2024" — https://www.tbae.texas.gov/wp-content/uploads/2024/02/ArchRequiredFlowChartFeb2024.pdf
• Texas Board of Architectural Examiners, interactive flowchart page — https://indreg.tbae.texas.gov/ListServ/WhenToEngageAnArchitect
• Texas Board of Architectural Examiners, Approved Engineers; Building Officials, Plans Examiners and Registered Accessibility Specialists; Consumer Guide; home page — https://www.tbae.texas.gov/approved-engineers/ , https://www.tbae.texas.gov/plansreviewers/ , https://www.tbae.texas.gov/consumer-guide/ , https://www.tbae.texas.gov/
• Texas Board of Professional Engineers and Land Surveyors, home page — https://pels.texas.gov/

Secondary restatements, flagged as such

• 22 Texas Administrative Code Section 1.123 ("Titles"), via Cornell Legal Information Institute — https://www.law.cornell.edu/regulations/texas/22-Tex-Admin-Code-SS-1-123 — the official Secretary of State copy was not read. The restatement prints an amendment history of adoption effective February 27, 2001 (26 TexReg 1710) and amendment effective June 21, 2018 (43 TexReg 3885), and prints no as-of date.
• Section 1051.606 was corroborated word for word against three secondary restatements — Justia ("2025 Texas Statutes"), FindLaw ("Current as of January 01, 2026") and Texas Public Law ("Verified: May 26, 2025") — https://law.justia.com/codes/texas/occupations-code/title-6/subtitle-b/chapter-1051/subchapter-l/section-1051-606/ , https://codes.findlaw.com/tx/occupations-code/occ-sect-1051-606/ , https://texas.public.law/statutes/tex._occ._code_section_1051.606
• Section 1001.053 was corroborated word for word against FindLaw — https://codes.findlaw.com/tx/occupations-code/occ-sect-1001-053/

Verification notes for future reuse

• Neither Occupations Code chapter prints a currency or "last updated" line. Dating rests on the amendment notes attached to individual sections. The most recent note seen in Chapter 1051 is Acts 2025, 89th Leg., R.S., Ch. 400 (H.B. 2286), Sec. 1, eff. September 1, 2025, attached to Section 1051.351 only. The most recent notes seen in Chapter 1001 are Acts 2025, 89th Leg., R.S., Ch. 812 (S.B. 1259), Sec. 2 and Acts 2025, 89th Leg., R.S., Ch. 775 (S.B. 681), Sec. 2, both effective September 1, 2025, attached to Sections 1001.601 and 1001.351. Section 1051.606 carries no amendment note later than 2003 and Section 1001.056 none later than 2009.
• Section 1051.606's own history reads: "Added by Acts 2001, 77th Leg., ch. 1421, Sec. 1, eff. June 1, 2003; Renumbered from Occupations Code Sec. 1051.056 and amended by Acts 2003, 78th Leg., ch. 331, Sec. 3.11, 3.12, eff. Sept. 1, 2003."
• Section 1001.056's own history reads: "Added by Acts 2001, 77th Leg., ch. 1421, Sec. 1, eff. June 1, 2003. Amended by: Acts 2009, 81st Leg., R.S., Ch. 1142 (H.B. 2649), Sec. 1, eff. June 19, 2009." Subsection (c), the expansive-soil carve-out, comes from that 2009 amendment on the face of the note.
• Chapter 1001's verbatim text ends mid-sentence inside Section 1001.603 ("The authority of the board to issue an advisory opi"). Sections after that point were not read.
• The Chapter 1001 and 1051 pages' own internal anchors point back at statutes.capitol.texas.gov, which has served a JavaScript shell throughout this engine's work. The tcss host serves the same material as readable HTML.
• The Board's two flow-chart versions, February 2024 and April 2023, are identical in extracted text apart from the revision stamp, and neither says which is current. The Board's home page links the February 2024 PDF; its page for building officials and plans examiners links the April 2023 PDF.
• The Board's flow chart prints "Approved Engineer." The term "Excepted Engineer" does not appear in any Board document read, despite appearing in third-party reproductions of the chart.
• The published list of approved engineers is linked as https://www.tbae.texas.gov/wp-content/uploads/2026/05/Approved-PE-list-May-2026.pdf and was not opened.