What is a San Antonio municipal bid?
A San Antonio municipal bid is a formal solicitation issued by a San Antonio-area local government or city-owned utility — the City of San Antonio, CPS Energy, SAWS, NISD/SAISD/NEISD, Bexar County, VIA Metropolitan Transit, or San Antonio International Airport — asking qualified contractors to submit pricing or proposals for a defined scope of work.
The statutes are the same as elsewhere in Texas: Texas Local Government Code Chapter 252 for the City of San Antonio, Chapter 262 for Bexar County, Texas Education Code §44.031 for the school districts, and the Texas Utilities Code for CPS Energy and SAWS competitive procurement.
The thing that makes San Antonio distinct: CPS Energy is one of the largest municipally-owned electric utilities in the United States and SAWS is one of the largest municipally-owned water systems. Both are City of San Antonio enterprises with their own procurement offices and their own contract volume. If you only register with City of San Antonio Purchasing Division and ignore CPS Energy and SAWS, you've missed the majority of San Antonio's public procurement spend.
The San Antonio procurement landscape
| Entity | Annual procurement | Population served | Bid frequency |
|---|---|---|---|
| City of San Antonio (general operations) | $3.4 B | 1.5 M | ~700 bids/year |
| CPS Energy | $3.0 B | 880K customers across 8 counties | ~400 bids/year |
| SAWS (San Antonio Water System) | $800 M | 1.8 M residents in 8 counties | ~200 bids/year |
| Northside ISD (NISD) | $1.4 B | 100,000+ students, 121 schools | ~400 bids/year |
| San Antonio ISD (SAISD) | $680 M | 46,000 students, 89 schools | ~250 bids/year |
| Northeast ISD (NEISD) | $820 M | 60,000 students, 68 schools | ~300 bids/year |
| Bexar County | $1.8 B | 2.0 M | ~350 bids/year |
| VIA Metropolitan Transit | $280 M | Bexar County transit | ~80 bids/year |
| San Antonio International Airport (SAT) | $120 M | 10M annual passengers | ~60 bids/year |
Total: roughly 13 billion dollars of annual San Antonio-area public procurement across 9 major entities, with about 2,700 formal bids per year.
The major opportunity most contractors miss: CPS Energy. As the largest municipally-owned electric and gas utility in the country, CPS Energy procures more than 3,000 separate vendor categories — electrical contractors, line construction, transformer maintenance, substation work, gas distribution, civil work, painting, landscaping, janitorial. It's the single biggest buyer in the SA metro, and a lot of new contractors don't realize it's separate from the City.
Where each San Antonio entity publishes its bids
| Entity | Platform | Direct portal URL |
|---|---|---|
| City of San Antonio (general) | City direct portal | webapp1.sanantonio.gov/BidContractOpps |
| City of San Antonio (selected RFPs) | Bonfire (limited use) | sa-bf.bonfirehub.com |
| CPS Energy | CPS direct vendor portal | cpsenergy.com/en/about-us/business-suppliers.html |
| SAWS | SAWS procurement portal | saws.org/business |
| Northside ISD (NISD) | NISD direct portal | nisd.net/purchasing |
| San Antonio ISD (SAISD) | SAISD direct portal | saisd.net/purchasing |
| Northeast ISD (NEISD) | NEISD direct portal | neisd.net/purchasing |
| Bexar County | Bexar County direct | bexar.org/2156/Purchasing |
| VIA Metropolitan Transit | VIA procurement page | viainfo.net/about/procurement |
| San Antonio Airport | City of San Antonio Aviation Department | flysanantonio.com/business |
| Texas state agencies near SA | ESBD | txsmartbuy.com/sp/esbd |
MuniBidBoard's Texas bids dashboard aggregates as many of these as our scrapers can reach — every bid links back to the agency's free portal.
City of San Antonio Purchasing Division
The City of San Antonio Finance Department, Purchasing Division, handles general city procurement (everything not under CPS Energy or SAWS). About 700 formal bids per year cover 24 city departments.
Top buyers within the City of San Antonio:
- Public Works — street and bridge construction, ADA accessibility work, sidewalks. SA's "SA Tomorrow" comprehensive plan drives multi-year street work.
- Center City Development & Operations — downtown infrastructure including River Walk maintenance and bridge work.
- Parks & Recreation — 290+ parks, 26 community centers, athletic facilities.
- San Antonio Public Library — 32 branches.
- Convention & Sports Facilities — Henry B. González Convention Center and the Alamodome (~$50M+ in renovation cycles).
- Aviation Department — San Antonio International Airport (SAT) and Stinson Municipal Airport.
- Fire, Police, and EMS — facilities, equipment.
City of San Antonio's SBEDA program (Small Business Economic Development Advocacy) sets aggressive small-business participation goals on most procurement. Like Houston's and Dallas's M/WBE programs, primes WANT certified SBEDA subs to fill participation requirements.
CPS Energy — the largest single buyer in the metro
CPS Energy is the largest municipally-owned electric and natural gas utility in the United States by customer count, serving over 880,000 electric customers and 380,000 gas customers across 8 South Texas counties. It's owned by the City of San Antonio but operates as a self-funded enterprise with its own Board of Trustees.
Annual procurement: $3.0 billion. CPS Energy's vendor categories include:
- Electric distribution & transmission — line construction, pole replacement, substation work, transformer service. Continuous storm-recovery and grid hardening work.
- Generation facilities — Calaveras Power Station, Spruce Power Station, and the 230+ MW solar/wind portfolio. Maintenance contracts, mechanical, painting/coatings (industrial heavy).
- Gas distribution — 5,000+ miles of natural gas mains. Locate work, replacement work, valve maintenance.
- Customer-facing facilities — 30+ offices, the main HQ on Navarro Street, payment centers. HVAC, janitorial, security, building maintenance.
- Vehicle fleet — 1,500+ vehicles. Maintenance contracts, body work, electrical.
- Civil work — duct bank installation, vault construction, concrete work around substations and switchgear.
CPS Energy has its own Supplier Diversity Program with M/WBE and SBE participation goals. Apply at cpsenergy.com/en/about-us/business-suppliers.html. The vendor onboarding is more involved than the City of San Antonio's — plan on 90 minutes — but the procurement volume more than justifies it.
San Antonio Water System (SAWS)
SAWS is the city-owned water and wastewater utility serving 1.8 million residents across 8 counties. Annual budget: $800M, including a multi-year capital improvement program (CIP) that drives most of the construction work.
SAWS bid categories:
- Water transmission and distribution — replacement of aging mains, new main installation for SA's continuing growth.
- Wastewater collection — sewer rehabilitation, lift station construction and maintenance.
- Treatment plants — 3 wastewater treatment plants, ongoing capital upgrades and chemical-feed contracts.
- Field operations facilities — service centers, maintenance buildings, training facilities.
- Recycling and water reuse — SAWS operates the country's largest direct potable reuse system; mechanical and chemical contracts.
Vendor registration at saws.org/business. SAWS also has its own Small & Minority Business Office.
The three big San Antonio ISDs: NISD, SAISD, NEISD
San Antonio's school district landscape is unusual: 17 separate ISDs serve different geographic slices of the city, with three dominating by enrollment and budget.
Northside ISD (NISD)
NISD covers the northwest side of San Antonio with 100,000+ students and 121 schools — making it the largest Texas school district outside Houston ISD. Annual budget: $1.4B. NISD's 2022 bond ($992M) is in active execution with major capital projects continuing through 2030. Major trade work: HVAC, roofing, classroom renovations, security upgrades, athletic facility construction. Vendor registration at nisd.net/purchasing.
San Antonio ISD (SAISD)
SAISD serves downtown and the inner city with 46,000 students and 89 schools. Annual budget: $680M. SAISD's 2020 bond ($1.3B — the largest in district history) funds new construction and major renovations through 2027. The district focuses heavily on local hiring and HUB participation. Vendor registration at saisd.net/purchasing.
Northeast ISD (NEISD)
NEISD covers the northeast suburbs with 60,000 students and 68 schools. Annual budget: $820M. NEISD's 2022 bond ($648M) funds ongoing facility upgrades. Vendor registration at neisd.net/purchasing.
The fourteen smaller districts in Bexar County (Harlandale, South San Antonio, Edgewood, Southwest, Judson, Schertz-Cibolo-Universal City, etc.) each handle their own procurement. Smaller volume but much less competition. Several of them are quietly large by capital project — Judson ISD's recent $300M bond was bid mostly by Austin and SA contractors.
Bexar County procurement
Bexar County serves 2.0 million residents with an annual budget over $1.8 billion. The County Purchasing Department handles general county procurement; major departments include:
- Public Works — county roads, bridges, drainage
- Sheriff's Office — Bexar County Detention Center (one of the largest in TX) plus three substations
- Criminal Courts — 25+ courthouses and county clerk facilities
- Bexar County Hospital District (University Health) — separate procurement office, runs University Hospital and 30+ community clinics
- Bexar County Flood Control — ongoing drainage and bayou maintenance
Vendor registration at bexar.org/2156/Purchasing. Bexar County has its own SMWBE (Small, Minority, and Women Business Enterprise) program.
VIA Metropolitan Transit
VIA operates bus and rapid transit service across Bexar County, with an annual budget of $280M. Current major capital programs include the Green Line BRT (bus rapid transit) and the upcoming Silver Line BRT.
VIA's procurement covers: bus facility construction and maintenance, ITS systems, fare collection equipment, station upgrades, vehicle maintenance contracts, security/CCTV systems. Vendor registration at viainfo.net/about/procurement. As a federally-funded transit agency, VIA's procurement requires DBE participation on federally-funded projects.
San Antonio International Airport
SAT is owned and operated by the City of San Antonio Aviation Department, with about 10 million annual passengers. The city is building a new $2.5B terminal complex that will drive massive trade contractor opportunity through 2030 — terminal construction, finishes, baggage handling, electrical, mechanical, paving, painting.
Aviation Department procurement runs through the City of San Antonio Purchasing Division but with airport-specific solicitations. Many bids appear on flysanantonio.com/business as well.
How to register as a San Antonio vendor
Block a Saturday. You'll be registering on more separate portals than in Houston or Dallas because San Antonio has more standalone procurement entities (CPS Energy, SAWS, three big ISDs).
Documents to prep:
- W-9 (business legal name + EIN)
- Certificate of insurance — general liability ($1M min), auto liability, workers' comp
- Texas business registration / DBA
- TDLR trade licenses
- Texas Comptroller good-standing letter
- City of San Antonio SBEDA certification if eligible (separate from state HUB)
- CPS Energy Supplier Diversity certification if eligible
- Banking info for ACH
- NAICS / NIGP codes for your trade
Priority order for an SA-area trade contractor:
- CPS Energy (biggest single buyer in the metro)
- City of San Antonio (general operations)
- SAWS (steady volume, less competition)
- NISD (largest school district)
- Bexar County
- NEISD & SAISD (bond work)
- VIA
- Texas ESBD for state agencies (UTSA, Texas A&M San Antonio, San Antonio College)
SBEDA — San Antonio's small business set-aside program
San Antonio's Small Business Economic Development Advocacy (SBEDA) program is the city's version of M/WBE/SBE. It sets participation goals for:
- Small Business Enterprises (SBE) — revenue-based eligibility
- Minority Business Enterprises (MBE)
- Women Business Enterprises (WBE)
- Veteran Business Enterprises (VBE) — San Antonio's military-heavy population makes this category larger here than elsewhere in Texas
- African American Business Enterprises (AABE) — separately tracked
Apply at sanantonio.gov/sbeda. Free, takes about 90 minutes once your documents are in hand. SBEDA certification is recognized reciprocally by Bexar County's SMWBE program in many cases. CPS Energy has its own Supplier Diversity program separate from SBEDA — apply for both if eligible.
San Antonio bid categories by trade
Painting & coatings
CPS Energy substation and generation-facility coatings (industrial-grade, often a higher-margin niche). SAWS treatment plant tank coatings. NISD bond exterior repaints at 60+ schools. City of San Antonio Parks & Rec rec-center recoats. SA Airport terminal interior repaints. Browse current Texas painting/coatings bids →
HVAC & mechanical
NISD bond replacing rooftop units at 80+ schools through 2030. CPS Energy office HVAC service contracts. City of San Antonio Convention Center mechanical systems. Bexar County jail and courthouse HVAC. Browse current Texas HVAC bids →
Roofing
NISD, SAISD, NEISD bond programs include 40+ school re-roofs through 2030. CPS Energy facility roofing. City of San Antonio facility roofs. SA Airport terminal roof replacements (in the new terminal program). Browse current Texas roofing bids →
Electrical
CPS Energy is by far the largest electrical buyer in the metro — constant line work, substation, transformer, and distribution upgrades. NISD bond electrical upgrades. City of San Antonio LED streetlight conversion. SAWS facility electrical. Browse current Texas electrical bids →
Plumbing & water/wastewater
SAWS is the largest plumbing/water buyer in the SA metro. Constant water main, sewer, and treatment-plant work. NISD bond plumbing upgrades. CPS Energy facility plumbing. Browse current Texas plumbing bids →
Concrete, paving & striping
City of San Antonio Public Works runs continuous street reconstruction. VIA BRT corridor concrete. NTTA-adjacent suburban municipalities (Schertz, Cibolo, Universal City) have aggressive road programs. CPS Energy substation and vault concrete. SAWS treatment plant civil. Browse current Texas construction/paving bids →
Fencing & perimeter security
CPS Energy substation perimeter security (TSA-style standards). SAWS treatment plant and field facility fencing. NISD school perimeters. Bexar County jail and substations. SA Airport perimeter. Browse current Texas fencing bids →
Landscaping & grounds maintenance
City of San Antonio Parks manages 290+ parks. CPS Energy substation and facility grounds. SAWS facility grounds. NISD school grounds at 121 campuses. Browse current Texas landscaping bids →
Janitorial
City of San Antonio facility janitorial contracts. CPS Energy office and field facility cleaning. SAWS facility cleaning. SA Airport terminal cleaning (large multi-year contract). NISD/SAISD/NEISD janitorial mostly in-house but contracts out specialty work. Browse current Texas janitorial bids →
See every open San Antonio-area bid in one place
MuniBidBoard aggregates City of San Antonio, CPS Energy, SAWS, NISD, SAISD, NEISD, Bexar County, VIA, and every other San Antonio-area solicitation we can reach into one searchable, daily-updated list. Every bid links to the official agency portal — no paywall.
Browse open Texas bidsFrequently asked questions
Does the City of San Antonio use BidNet or DemandStar?
Some City of San Antonio bids get syndicated to BidNet Direct and DemandStar, but every City of San Antonio solicitation is also published — for free — on the City's direct portal at webapp1.sanantonio.gov/BidContractOpps. Paying BidNet or DemandStar for bids you can get free directly is the most common new-vendor mistake.
How is CPS Energy procurement different from City of San Antonio procurement?
CPS Energy operates independently as a city-owned utility with its own Board of Trustees, its own procurement office, its own M/WBE/SBE program, and its own vendor portal. Procurement decisions are made by CPS Energy staff and approved by the CPS Board, not by City Council. If you're an electrical contractor or industrial mechanic, register with CPS Energy FIRST — it has more contract volume than the rest of City of San Antonio combined.
Are all 17 Bexar County school districts worth registering with?
For a serious San Antonio trade contractor, yes — but in priority order. NISD, NEISD, and SAISD account for ~70% of total ISD procurement in the metro. The smaller districts (Harlandale, Edgewood, South San Antonio, Southwest, Judson, Schertz-Cibolo-Universal City, etc.) collectively are still substantial and often less competitive because national bidders ignore them.
What's the SAT Airport Terminal Development Program?
The San Antonio Airport Terminal Development Program is a $2.5B+ multi-year capital project to expand and modernize SAT. It includes a new Terminal C (replacing Terminal A), expanded concourses, new ground transportation facilities, parking structures, and concession areas. For trade contractors, the program will generate hundreds of bids through 2030 across concrete, paving, mechanical, electrical, finishes, painting, fencing, and landscaping. Most bids will route through the City of San Antonio Aviation Department.
Can I bid on San Antonio work if I'm based in Austin or Houston?
Yes. There's no residency requirement for San Antonio municipal work. You'll need to register on the relevant SA portals and show how you'll mobilize a crew to San Antonio. Austin and Houston contractors regularly bid and win in SA, especially on CPS Energy and SAWS work.
How does SAWS differ from CPS Energy for procurement?
SAWS (water and wastewater) operates separately from CPS Energy (electric and gas), with its own Board of Trustees, procurement office, and vendor portal. Both are city-owned utilities but they're functionally independent. Most plumbing and water contractors focus on SAWS; most electrical and mechanical contractors focus on CPS Energy. Many register for both.