San Marcos, TX Building Permit Fees (2026)
Actual residential building permit fees from the City of San Marcos Development Fees schedule, adopted by City Council Resolution 2025-185R and effective October 1, 2025 (current). San Marcos is the Hays County seat on the I-35 corridor, about 30 miles south of Austin. Verified directly against the published city schedule.
This page covers: The per-square-foot residential building permit fees in San Marcos - $0.63/sq ft for new single-family homes and additions, $0.42/sq ft for interior remodels, $0.53/sq ft for decks and patios, $0.10/sq ft for re-roofs (max $2,000), and $0.16/sq ft for foundation permits - plus the city's flat residential fees ($263 swimming pool, $79 fence, $105 demolition, $105 storage building, $105 irrigation, $105 driveway/sidewalk, $105 certificate of occupancy, and more). Every permit adds a flat $15 technology fee. Each figure is exact from the published Development Fees schedule.
Trade permits are SEPARATE: Electrical, mechanical, and plumbing trade permits are priced separately from the building permit. A residential stand-alone trade permit is $63; a trade child permit pulled under a general contractor is $58 (each plus the $15 technology fee). A new home built by a GC typically draws all three trade child permits.
An application deposit is paid up front: A non-refundable application deposit of one-half the permit fee (max $2,000) is paid when plans go into review and is credited to the permit balance - it changes when you pay, not how much you pay in total.
Texas has no statewide levy: Unlike Virginia or Maryland, Texas adds no statewide percentage building-permit levy, and San Marcos adds no city percentage surcharge. The only add-on to a permit is the flat $15 technology fee.
This page does NOT cover: Impact fees and capital recovery fees (separate schedules), water and wastewater tap fees, the $444-per-unit Parkland Development Fee and other fee-in-lieu site/subdivision charges, floodplain and zoning/planning review beyond the $50 single-family floodplain permit, and contractor licensing costs ($170 initial / $140 renewal for a general contractor) - all excluded from every figure on this page.
San Marcos charges $0.63 per square foot for new single-family homes and additions, $0.42/sq ft for interior remodels, and $0.53/sq ft for decks and patios, and adds a flat $15 technology fee to every permit. A 2,000 sq ft new home's building permit is $1,275.00 (2,000 × $0.63 + $15). Electrical, mechanical, and plumbing trade permits are priced separately ($58 each as a GC child permit, plus $15 tech), so a full new-home package is a build-up estimate of about $1,494. Flat fees cover a swimming pool ($278 all-in), a fence ($94), and residential demolition ($120). Texas has no statewide permit levy.
- New single-family construction and residential additions are $0.63 per square foot; interior remodels are $0.42/sq ft; decks and patios are $0.53/sq ft; and every permit adds a flat $15 technology fee. A 2,000 sq ft new home's building permit is $1,275.00 ($1,260 + $15).
- Trade permits are separate line items: a residential stand-alone electrical, mechanical, or plumbing permit is $63, and a trade child permit pulled under a general contractor is $58 (each plus $15 tech). The schedule does not state that the $0.63/sq ft building fee includes trades, so a full new-home package of building + three child permits is a build-up estimate of about $1,494 for 2,000 sq ft.
- A non-refundable application deposit of one-half the permit fee (max $2,000) is paid up front to put plans into review and is applied to the permit balance - it changes when you pay, not how much you pay in total.
- Common flat fees (each plus $15 tech): swimming pool $263, fence $79, residential demolition $105, storage building $105, irrigation system $105, driveway or sidewalk (Type I) $105, and Certificate of Occupancy $105. Re-roofs are $0.10/sq ft with a $2,000 cap.
- The fees come from a cost-of-service study adopted by Resolution 2025-185R, effective October 1, 2025 - a current, dated schedule. Impact fees, capital recovery fees, water/wastewater taps, and the $444-per-unit parkland development fee are separate and NOT included in any figure on this page. Texas has no statewide levy.
San Marcos Building Permit Fee Structure
San Marcos prices building permits per square foot by project category, adds a flat $15 technology fee to every permit, and prices trades and common small jobs as flat fees. An up-front application deposit of half the permit fee (max $2,000) is credited to the permit balance. The tables below show the verified figures exactly as published in the Resolution 2025-185R schedule.
Per-square-foot building permit rates
| Category | Rate |
|---|---|
| New single-family residential construction | $0.63 / sq ft |
| Residential addition | $0.63 / sq ft |
| Residential interior remodel | $0.42 / sq ft |
| Deck or patio | $0.53 / sq ft |
| Re-roof | $0.10 / sq ft (max $2,000) |
| Foundation permit | $0.16 / sq ft |
| All other construction (shell, commercial addition, tenant finish-out) | $0.79 / sq ft |
| Technology fee (every permit) | $15.00 |
Multi-family new construction is $15.00 per bedroom with a $16.00-per-bedroom improvement credit applied to the permit. The schedule prints rates as "$.63 cents per square foot" - the dollar-sign form controls, read as $0.63/sq ft. Fees derive from a cost-of-service study adopted September 16, 2025.
Trade permits (electrical, mechanical, plumbing - each)
| Trade permit type | Base fee | With $15 tech |
|---|---|---|
| Residential stand-alone trade permit | $63.00 | $78.00 |
| Child permit (pulled under a GC) | $58.00 | $73.00 |
| Multi-family child permit | $42.00 / unit | per-unit + $15 |
| Commercial stand-alone trade permit | $100.00 | $115.00 |
Flat residential permit fees
| Permit | Base | All-in (with $15 tech) |
|---|---|---|
| Swimming pool | $263.00 | $278.00 |
| Fence | $79.00 | $94.00 |
| Residential demolition | $105.00 | $120.00 |
| Storage building | $105.00 | $120.00 |
| Irrigation system | $105.00 | $120.00 |
| Residential (Type I) driveway or sidewalk | $105.00 | $120.00 |
| Certificate of Occupancy (per building & floor) | $105.00 | $120.00 |
| Floodplain permit (single-family) | $50.00 | $65.00 |
| Moving permit | $29.00 | $44.00 |
Administrative fees to know: re-inspection $263, resubmittal $315 each after the second, after-hours inspection $263/hour (2-hour minimum), and work begun without a permit is charged double the normal fee ($200 flat for a homeowner's own work). Commercial or unsafe-structure demolition is $333. The all-in column assumes the $15 technology fee applies once per permit as printed at the top of the schedule.
San Marcos Permit Fee Components
A San Marcos building permit total stacks a few separate components: the per-square-foot building permit fee, separately priced trade permits, and a flat $15 technology fee on every permit. An application deposit changes the timing of payment but not the total. Impact, parkland, and tap fees sit outside this stack entirely.
| Component | Amount | Status |
|---|---|---|
| Building permit fee | $0.63/SF (new/addition), $0.42/SF (remodel), $0.53/SF (deck), or flat fee | Exact schedule figure |
| Trade permits (electrical, mechanical, plumbing) | $58 GC child / $63 stand-alone, each + $15 tech | Separate - priced and paid on their own |
| Technology fee | $15.00 | Flat, added to every permit |
| Application deposit | 1/2 permit fee, max $2,000 | Timing only - credited to the permit balance, not an extra cost |
| Impact / capital recovery / tap fees | Separate schedules | Excluded - can far exceed the building permit on a new home |
| Parkland Development Fee | $444 / unit | Excluded - separate site/subdivision charge |
The only add-on to a San Marcos permit is the flat $15 technology fee - there is no percentage surcharge, and Texas has no statewide building-permit levy. Because the schedule does not state whether the $0.63/sq ft building fee bundles trade work, new-home totals that add the three trade child permits are labeled build-up estimates in the worked examples below.
Worked Examples
Every figure below is direct arithmetic from the published Resolution 2025-185R schedule. Building-permit figures are exact; new-home package totals that add trade child permits are labeled build-up estimates because the schedule does not state whether trades are bundled into the $0.63/sq ft rate.
Example 1: New 2,000 SF Single-Family Home
| Fee Component | Rule Applied | Amount |
|---|---|---|
| Building permit | 2,000 SF × $0.63 | $1,260.00 |
| Technology fee | flat, per permit | $15.00 |
| Building permit subtotal (exact) | $1,260 + $15 | $1,275.00 |
| + Trade child permits (electrical, mechanical, plumbing) | 3 × ($58 + $15) | $219.00 |
| Full new-home package (build-up estimate) | $1,275 + $219 | ~$1,494 (estimate) |
Assumptions: 2,000 SF home. Building permit $0.63/SF = $1,260, plus the $15 technology fee = $1,275.00 - an exact schedule figure. If the general contractor pulls electrical, mechanical, and plumbing as three trade child permits, add 3 × ($58 + $15) = $219, for a full package of about $1,494. That package is labeled a build-up estimate because the schedule does not state whether trades are bundled into the $0.63/sq ft rate. Impact fees, capital recovery, tap fees, and the $444-per-unit parkland fee are separate and not included. Source: City of San Marcos Development Fees (Resolution 2025-185R, eff. Oct 1, 2025).
Example 2: 200 SF Deck
| Fee Component | Rule Applied | Amount |
|---|---|---|
| Deck permit | 200 SF × $0.53 | $106.00 |
| Technology fee | flat, per permit | $15.00 |
| All-in total (exact) | $106 + $15 | $121.00 |
Assumptions: A deck bills at the $0.53/sq ft deck-and-patio rate. 200 SF × $0.53 = $106, plus the $15 technology fee = exactly $121.00. Any electrical work (for example, deck lighting) would draw a separate trade permit. See the San Marcos deck permit guide for a full walkthrough. Source: City of San Marcos Development Fees (Resolution 2025-185R, eff. Oct 1, 2025).
Example 3: Flat-Fee Projects - Pool, Fence, Demolition
| Project | Flat Fee + Tech | All-in Total |
|---|---|---|
| Swimming pool (in-ground) | $263 + $15 | $278.00 |
| Fence | $79 + $15 | $94.00 |
| Residential demolition | $105 + $15 | $120.00 |
Assumptions: Each of these is a flat permit fee plus the $15 technology fee, so the all-in is exact: pool $278.00, fence $94.00, demolition $120.00. Pool electrical is a separate trade permit and is not in the pool total. Commercial or unsafe-structure demolition is $333 (plus tech) instead of the $105 residential rate. Source: City of San Marcos Development Fees (Resolution 2025-185R, eff. Oct 1, 2025).
Example 4: 400 SF Interior Remodel
| Fee Component | Rule Applied | Amount |
|---|---|---|
| Remodel permit | 400 SF × $0.42 | $168.00 |
| Technology fee | flat, per permit | $15.00 |
| All-in total (exact) | $168 + $15 | $183.00 |
Assumptions: An interior remodel bills at $0.42/sq ft. 400 SF × $0.42 = $168, plus the $15 technology fee = exactly $183.00. If the remodel adds electrical, mechanical, or plumbing work, each trade draws a separate permit ($58 GC child or $63 stand-alone, plus $15 tech). A 400 SF addition, by contrast, uses the higher $0.63/sq ft new-construction rate and works out to $267.00. Source: City of San Marcos Development Fees (Resolution 2025-185R, eff. Oct 1, 2025).
Read before you budget from these examples
- New-home package is a build-up estimate: the $1,275 building permit is an exact schedule figure, but the ~$1,494 full package is an estimate because the schedule does not state whether the $0.63/sq ft rate bundles trade work. The $58 child-permit lines indicate trades are priced separately.
- Trades are separate: San Marcos prices electrical, mechanical, and plumbing permits on their own lines ($58 GC child / $63 stand-alone, plus $15 tech each), on top of the building permit.
- The $15 technology fee is the only add-on: there is no percentage surcharge and Texas has no statewide levy - a flat $15 per permit is all that stacks on the base fee.
- The application deposit is timing, not cost: a non-refundable deposit of half the permit fee (max $2,000) is paid up front and credited to the balance; it does not raise the total.
- Excluded fees can dwarf the permit: impact fees, capital recovery, water/wastewater taps, and the $444-per-unit parkland development fee are separate and not in any total above.
Practitioner Insight
San Marcos keeps its permit math unusually clean for the Austin metro: one per-square-foot rate by project category, a single flat $15 technology fee, and no percentage surcharge on top. A 2,000 sq ft new home's building permit is exactly $1,275.00 - you can compute it on the back of an envelope. That is a very different structure from Austin, where the same home runs closer to $1,842 all-in once the tiered plan-review and inspection fees stack up. North of Austin, Round Rock uses a flat $485 new-home fee and Georgetown a $0.50/sq ft rate plus fixed fees.
The one place San Marcos is not clean is trade bundling. The schedule prices a $58 electrical, mechanical, or plumbing "child permit" pulled under a general contractor but never states whether those are already covered by the $0.63/sq ft building fee. Read literally, they are separate - which is why every full new-home number on this page is labeled a build-up estimate (about $1,494 for a 2,000 sq ft home with all three trades). For a deck, pool, fence, or remodel that draws no trade work, the all-in is exact and there is nothing to estimate. Anyone budgeting a full build should also price the excluded site charges early: impact fees, capital recovery, tap fees, and the $444-per-unit parkland development fee are separate schedules and can exceed the building permit itself.
Permit Requirements - Common Residential Projects in San Marcos
| Project Type | Permit Required? | Fee Category | Notes |
|---|---|---|---|
| New single-family home | Yes | $0.63/SF + $15 tech | Trades separate; 2,000 SF = $1,275 building line |
| Addition | Yes | $0.63/SF + $15 tech | Same rate as new construction |
| Interior remodel | Yes | $0.42/SF + $15 tech | 400 SF = $183.00 all-in; trades separate |
| Deck or patio | Yes | $0.53/SF + $15 tech | 200 SF = $121.00 all-in |
| Swimming pool | Yes | $263 flat + $15 tech | $278 all-in; pool electrical separate |
| Fence | Yes | $79 flat + $15 tech | $94 all-in |
| Re-roof | Yes | $0.10/SF + $15 tech | Caps at $2,000; 2,000 SF roof = $215 all-in |
| Demolition (residential) | Yes | $105 flat + $15 tech | $120 all-in; commercial/unsafe is $333 |
| Standalone trade work (electrical / mechanical / plumbing) | Yes | $63 stand-alone / $58 GC child + $15 tech | Priced separately from the building permit |
Permit trigger thresholds and chargeable-area determinations (which square footage counts for garages, porches, and covered patios) are set by the City of San Marcos Permit Center. When uncertain whether a permit is required, contact Planning & Development Services before starting work.
City of San Marcos Permit Center
Planning & Development Services - Permit Center
630 E. Hopkins, San Marcos, TX 78666
Permit Center: (512) 805-2630
permitinfo@sanmarcostx.gov · City main line (512) 393-8000
Development Fees (Resolution 2025-185R)
Effective October 1, 2025 · cost-of-service study
When This Estimate May Not Apply
You need a single all-in new-home number
The schedule does not state whether the $0.63/sq ft building fee bundles electrical, mechanical, and plumbing. The $58 child-permit lines indicate trades are priced separately, so package totals on this page are build-up estimates. Confirm with the Permit Center before relying on one figure.
Your project has chargeable-area questions
Which square footage counts (garage, porch, covered patio) is a Permit Center determination the schedule does not spell out for the per-square-foot rates, so a computed figure can shift once the counted area is set.
You are building a new home - site fees are separate and large
Impact fees, capital recovery fees, water/wastewater taps, and the $444-per-unit Parkland Development Fee are separate site and subdivision charges that are NOT in any total here and can far exceed the building permit.
Your plans need extra review, or work started without a permit
Resubmittals after the second staff review are $315 each and a re-inspection is $263 per occurrence, on top of the permit fees. Work begun without a permit is charged double the normal fee (a $200 flat charge applies to a homeowner's own work).
The city adopts a new fee resolution
Fees were last set by Resolution 2025-185R (effective October 1, 2025) from a cost-of-service study and can change by a later council resolution. Confirm the current schedule before filing.
Source note: All figures come from the City of San Marcos Development Fees schedule adopted by City Council Resolution 2025-185R on September 16, 2025, effective October 1, 2025 - extracted with pdfplumber from the official PDF on July 4, 2026, and the effective date re-confirmed on the city's Fee Schedule page the same day. The schedule prints rates in the form "$.63 cents per square foot"; the dollar-sign form controls. Contact details were verified against the city's Planning & Development Services pages on July 4, 2026.
Frequently Asked Questions
Sources
-
City of San Marcos - Development Fees (Resolution 2025-185R) San Marcos, TX - official Development Fees schedule adopted September 16, 2025, effective October 1, 2025 (current). Primary source for every per-square-foot rate, flat fee, trade fee, technology fee, and deposit rule on this page. Extracted with pdfplumber July 4, 2026 Verified
-
City of San Marcos - Fee Schedule (Planning & Development Services) Department fee page confirming Resolution 2025-185R and the October 1, 2025 effective date, plus department contact details (630 E. Hopkins, 512-393-8000). Verified July 4, 2026.
See how San Marcos's per-SF structure compares to nearby Austin-metro cities, or estimate fees in covered jurisdictions.
Permit Fees Are One Part of Your Project Budget
Once you know your San Marcos permit cost, two related numbers round out your total budget picture:
Property tax impact after your project closes
A permitted addition or pool increases your assessed value in Hays County. See how Texas jurisdictions calculate the ongoing property tax impact at CountyTaxTools.com.
Impact, parkland, and subdivision fees for larger projects
Impact fees, capital recovery, tap fees, and the $444-per-unit Parkland Development Fee in San Marcos are separate from the building permit. Research zoning and site costs at ZoneFee.com.