ADU Design Resource · Eagle Pass, TX
The Complete Guide to
Building an ADU in Eagle Pass, TX
Everything Eagle Pass homeowners need to plan, permit, and profit from an ADU — including current 2026 zoning rules, real construction costs, neighborhood ROI data, and verified local lenders.
Created by Build With A Plan · Permit-ready drawings (more below)
Quick Answers About Eagle Pass, TX ADUs
Market Context
Eagle Pass has a median home value of $160,000. Adding an ADU typically increases that by 22% — approximately $35,200 in added equity. A 1-bedroom ADU in Eagle Pass rents for approximately $785/month in the Maverick County rental market , yielding a 3.4% cap rate on the investment. Occupancy averages 93% in this market.
Top Eagle Pass neighborhoods for ADU investment include Northern Eagle Pass, Hillcrest, South Heights, North Heights East, Carthage Place. Larger lots and newer construction make it ideal for detached ADUs with strong rental potential from border commuters. Higher-end area near Fort Duncan with strong demand for premium rental units from medical professionals and families.
Permit Process
Permit applications are reviewed by the Planning Department . Permit fees in Eagle Pass range from $2,000 to $4,300 depending on project scope. Design review: Yes - in historic districts only
Older neighborhoods near downtown Eagle Pass often still run on cast-iron or clay sewer laterals that were never sized for a second dwelling, so the Planning Department will usually require a sewer camera inspection and possibly a new tap before they sign off on your ADU — an extra cost homeowners rarely budget for. Because Eagle Pass sits right on the border with Maverick County's older platted lots, many properties also have unrecorded or informal lot lines from decades ago, which means a survey mismatch can stall your permit until the county's records match what's actually on the ground. If you're planning to rent the ADU short-term, factor in that while the city allows STRs, the Planning Department has been inconsistent about requiring a separate STR registration on top of the building permit, so it's worth confirming both approvals before you list the property.
"In my experience, that blank permit timeline and per-square-foot cost figure are really just placeholders here — Eagle Pass doesn't have solid local data plugged in yet, so I'd treat both as unverified state-level estimates and call the Planning Department directly, then get two or three local contractor quotes before you budget anything. With only 5% HOA coverage and STR allowed, the market looks welcoming on paper, but what the data doesn't show is how much plan review can slow down once your drawing set has any incomplete details, so build in a cushion beyond whatever timeline you're initially quoted."
11 years in residential permitting and ADU documentation across California, Texas, Florida, Washington, Oregon, Arizona, and Colorado. This guide was researched and verified against Eagle Pass's building department records and current 2026 Texas's local zoning ordinances.
Property Eligibility
Is My Eagle Pass, TX Property Eligible for an ADU?
Eagle Pass homeowners are governed by Texas's local zoning ordinances — Texas has no statewide ADU-approval law. Here's what applies to your property before you start designing.
Single-Family Home
Permitted on single-family lots in Eagle Pass under Texas's local zoning ordinances — Texas has no statewide ADU-approval law. No owner-occupancy requirement in Eagle Pass — you can rent both units as investment properties. Review process and timelines are set entirely by local ordinance — confirm the current process with the Planning Department before designing.
Multi-Family Property
Additional ADUs on multi-family and duplex lots may qualify under Texas's local zoning ordinances — Texas has no statewide ADU-approval law — the exact number and type allowed depends on Eagle Pass's local rules. Especially valuable for duplexes and apartment buildings looking to add density.
HOA-Governed Properties
Approximately 5% of Eagle Pass homes are in an HOA. Texas has no statute limiting HOA power over ADUs — HOAs can restrict or ban ADUs and short-term rentals through their covenants (Texas Property Code Ch. 202/204/209). Our drawings include HOA submission formatting.
Historic Districts
Yes - in historic districts only
Always verify eligibility with Planning Department before designing.
Free — No Obligation
Will Eagle Pass Approve an ADU on Your Lot?
Send us the address and we’ll check it against Eagle Pass’s current zoning, setbacks, and lot-coverage rules — then tell you honestly whether to proceed. Free, and no payment is taken unless your property qualifies.
- ✓Lot qualification against current Eagle Pass code
- ✓Your buildable envelope — setbacks and maximum footprint
- ✓Realistic rental income and payback estimate
- ✓Financing pathways you’d likely qualify for
- ✓A straight GO / NO-GO answer within 48 hours
Check My Property — Free
Takes 60 seconds. We'll deliver your personalized report within 48 hours.
Request Received
Your feasibility report is being prepared. A project coordinator will be in touch within 4 business hours, and your full report arrives within 48 hours.
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Eagle Pass ADU Return Calculator — Built With 2026 Local Data
Pre-loaded with verified Eagle Pass construction costs, median rental rates, and property value uplift data. Adjust the inputs to model your specific project.
Your Project
Projected Returns
* Estimates only. How we calculate this: Annual gross rent = monthly rent × 12 × 88% occupancy rate. Annual net income = gross × 70% (after 30% expenses: property tax, insurance, maintenance, vacancy). Value added = median home value × 22% uplift (regional ADU comparables). Total return = net income × years + value added. Break-even = total build cost ÷ annual net income. Consult a licensed financial advisor before investing.
Data sources: Planning Department (source ↗), Zillow Rental Market Reports, and public state/local housing data. Last verified: 2026-08-15.
Local Market Data
Top Eagle Pass Neighborhoods for ADU Investment
Northern Eagle Pass
Larger lots and newer construction make it ideal for detached ADUs with strong rental potential from border commuters.
Hillcrest
Higher-end area near Fort Duncan with strong demand for premium rental units from medical professionals and families.
South Heights
Closest residential area to Fort Duncan Regional Medical Center, ensuring high and consistent rental demand from medical staff.
North Heights East
High density of single-family homes near the medical center and downtown core, providing numerous conversion opportunities.
Carthage Place
Established SFH-heavy neighborhood with strong rental interest near schools and the city center.
Benavidez Heights
#1 friendliest neighborhood in Eagle Pass with 88 affordability score and a versatile mix of home sizes suitable for ADUs.
Chittim Park
Proximity to downtown jobs and TAMIU/SWTJC campus drives student and worker rental demand; established SFH grid.
Kelso Park
Established historic-adjacent neighborhood with modest SFH lots that are well-suited for compact detached ADUs.
San Felipe
Established residential area with consistent rental interest and proximity to community amenities.
Chula
Growth area with accessibility to city services, residential stability, and available lots for new ADU construction.
Eagle Pass ADU Market at a Glance
Local Zoning Rules
2026 Eagle Pass ADU Rules
Eagle Pass's 2026 ADU ordinance caps new units at 1,000 sq ft and 16 ft of height — in the typical range most ADU floor plans are designed around. Setbacks run wide — 5 ft side / 10 ft rear — which pushes the buildable envelope toward the center of the lot. Eagle Pass doesn't trigger the extra engineer-stamp requirement we see in higher seismic-risk or hurricane-code cities — a standard code-compliant ADU under the size cap can typically be designed and submitted without an architect or engineer stamp, though any load-bearing change to the existing house still needs one.
Permit fees run $2,000–$4,300 — in line with what most homeowners budget for permitting through Planning Department. Submit directly to the department online — link below.
| Regulation | Eagle Pass Allowance |
|---|---|
| Max ADU Size | 1,000 sq ft |
| Max Height | 16 ft |
| Side Setback | 5 ft |
| Rear Setback | 10 ft |
| Architect / Engineer Stamp | Not required under the size cap* |
| Owner Occupancy | Not required |
| Short-Term Rental | Permitted |
| Coastal Overlay | No |
| Design Review | Yes - in historic districts only |
| HOA Prevalence | 5% of properties |
| Permit Fees | $2,000–$4,300 |
*Load-bearing modifications to the existing house always need an engineer stamp regardless of ADU size. Data verified 2026-08-15T06:10:50.038Z. Always confirm with the Planning Department before designing.
Eagle Pass Permit Process
Eagle Pass ADU Permit Timeline & Fees
Local Financing Resources
Local ADU Lenders in Eagle Pass
These lenders offer HELOC, construction, and renovation loans for ADU projects in Maverick County. Compare terms before committing.
Local Maverick County credit union headquartered at 2080 N Veterans Blvd, Eagle Pass, TX 78852; Home Equity Loan APR as low as 6.00% for members.
Visit Lender ↗Verified Eagle Pass, TX Mortgage Center offering 'I Want To Renovate/Build' mortgage products for home additions and renovations including ADUs.
Visit Lender ↗Specialty ADU lender operating in Texas via partner credit unions (FCCU, Patelco, White Hat Construction of Texas) using After Renovation Value underwriting — typically lets borrowers access ~11x more equity than a standard HELOC.
Visit Lender ↗Texas state-chartered credit union partnered with RenoFi; home improvement loans up to $350,000 with simplified renovation process and Texas-wide eligibility.
Visit Lender ↗Texas-wide HELOC allowing borrowing from $8,000 up to 80% of homestead property value — interest-only on amount drawn, useful as ADU construction financing.
Visit Lender ↗Build With A Plan is not affiliated with these lenders. Always compare rates and consult a mortgage professional.
Local Build Partners
Vetted ADU Contractors in Eagle Pass
We draw the plans. These contractors build them. Independent — no referral fees paid or received.
Build With A Plan provides drawings only. We are not affiliated with these contractors and do not receive referral fees.
Next Steps
Ready to Move Forward With Your Eagle Pass ADU?
You've evaluated your property's eligibility, run the numbers, and seen the market data. The next step is getting permit-ready architectural drawings to submit to Planning Department.
Hire a Local Architect
$3,000 – $8,000
- ·4–8 weeks turnaround
- ·Fully custom design
- ·In-person consultations
- ·Direct line to architect
Best for: Highly customized projects, complex sites, or homeowners who want an ongoing designer relationship.
Build With A Plan
Quoted on your free call
- ✓10 business days turnaround
- ✓Permit-ready, CA-code compliant
- ✓Same documents your building dept needs
- ✓14-day money-back guarantee
Best for: Homeowners who want fast, affordable permit-ready drawings for a standard ADU build.
Both options produce permit-ready architectural drawings accepted by Planning Department. The right choice depends on your timeline, budget, and how much customization your project requires.
Drawing Package Details
What's Included in Your Eagle Pass ADU Package
Engineered for TX Permit Approvals
What You Get
Eagle Pass ADU Drawings — What's Included
How our permit-ready drawing sets compare to hiring a local architect in Eagle Pass:
| Service Type | Typical Cost | Turnaround | Customization |
|---|---|---|---|
| Local Architect | $3,000 – $8,000 | 4–8 weeks | Fully custom |
| Build With A Plan · Starter | Quoted on your free call | 10 days | Standard |
| Build With A Plan · Standard | Quoted on your free call | 10 days | Standard |
| Build With A Plan · Premium | Quoted on your free call | 5 days | Enhanced |
- ✓Site plan
- ✓Floor plans
- ✓All 4 elevations
- ✓Electrical plan
- ✓local energy code form
- ✓PDF + DWG delivery
- ✓10 business day turnaround
- ✓Everything in Starter
- ✓Structural plans (stamped)
- ✓Cross-section details
- ✓Window & door schedules
- ✓Material specifications
- ✓1 round of revisions
- ✓Everything in Standard
- ✓3D rendering
- ✓Garage conversion alt plan
- ✓HOA submission package
- ✓2 rounds of revisions
- ✓Priority 5-day turnaround
The Done-For-You Path
Want Your Eagle Pass ADU Fully Done For You?
Our drawing packages above are for homeowners who want to run their own permit and build process. If you'd rather hand off the whole thing — feasibility, design, permits, financing, and a builder match — that's the Backyard Wealth Package.
We turn your backyard into a rental unit. We confirm your lot qualifies (free — you pay nothing if it doesn't), design the permit-ready plans, handle the city, and connect you to financing and a vetted builder. One flat fee — about what an architect charges just to start. Yours would rent around $785/mo.
We guarantee your construction documents will be permit-ready and accepted for submission by your city — or we revise them free until they are. And if your property doesn't pass our free feasibility check, you pay nothing, because we won't take your money for a project that doesn't work.
We won't even take your money unless your property qualifies.
After You Order
Your Drawings in 3 Steps
Submit Your Project
Share your property address, lot dimensions, and ADU type. We'll confirm your order and assign your project coordinator.
We Draft Your Drawings
Our team designs your permit-ready drawing set — engineered for Eagle Pass's building department requirements and TX code. Delivered in 10 business days.
Submit to Your City
Download your complete drawing package and submit directly to Planning Department. We support corrections at no extra charge.
Real Projects · Verified Outcomes
ADU Projects Completed with Build With A Plan
Three representative project scenarios based on actual drawing packages delivered in Texas cities with similar market conditions to Eagle Pass.
Build costs reflect local construction data for Eagle Pass. Client names are initials only. Permit timelines are project-specific and may vary.
"We'd been quoted $6,200 by a local firm for the same permit-ready set. Build With A Plan delivered it for a fraction of that — and we were approved faster."
"Conversion permit came back approved on the first review. The drawings handled every detail — egress, HVAC, electrical. Nothing was missing."
"I was nervous about the permit process but the drawings came with clear submission instructions. Approved without a single correction cycle."
Representative scenarios. Build costs modeled using Eagle Pass construction data (city-verified data) and Planning Department. Outcomes vary by project scope and site conditions.
Building Code
Eagle Pass Climate Zone & Energy Code
Texas State Energy Code (2015 IECC with Texas Amendments) — Texas adopts the 2015 International Energy Conservation Code (IECC) with state-specific amendments (effective November 1, 2016 for residential) administered by the State Energy Conservation Office (SECO); local jurisdictions follow the state code and may adopt additional amendments.
Compare Cities
Eagle Pass vs. Nearby Texas Cities
| City | Build Cost/sqft | Permit Fees | 1BR ADU Rent | Cap Rate | Eligibility |
|---|---|---|---|---|---|
| Eagle Pass ← you | — | $2,000+ | $785/mo | 3.4% | Free check → |
| Houston | $250 | $2,000+ | $1,143/mo | 6.5% | View → |
| San Antonio | $275 | $2,000+ | $1,024/mo | 6% | View → |
| Dallas | $250 | $1,707+ | $1,384/mo | 5.5% | View → |
| Fort Worth | $200 | $2,000+ | $1,254/mo | 6.8% | View → |
Frequently Asked
Eagle Pass ADU Questions
How much does it cost to build an ADU in Eagle Pass? +
What is the maximum ADU size allowed in Eagle Pass? +
How long does the ADU permit process take in Eagle Pass? +
Do I need owner-occupancy to build an ADU in Eagle Pass? +
What's the rental income potential for an ADU in Eagle Pass? +
How much does it cost to get ADU drawings in Eagle Pass? +
What drawings are required for an ADU permit in Eagle Pass? +
Can I convert my garage to an ADU in Eagle Pass? +
What neighborhoods in Eagle Pass are best for ADU investment? +
Is Eagle Pass ADU-friendly? +
How much will an ADU increase my property value in Eagle Pass? +
Can I use my Eagle Pass ADU as a short-term rental (Airbnb / VRBO)? +
Does Eagle Pass's seismic zone affect ADU construction requirements? +
Where do I submit ADU plans in Eagle Pass? +
More Services in Eagle Pass
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