Bonding Capacity Letter: What Texas Bid Packets Ask For
What a bonding capacity letter says and doesn't guarantee, real Texas packet wording, single vs. aggregate limits, and a sample letter for your next bid.
MUD & Water District Bid Bond
Texas MUD bid bonds, ready before bid opening.
Every municipal utility district construction job over $50,000 needs bid security of at least 2% of your bid (Water Code §49.271). Developer-let packets usually ask for 5%. Built for the water, sewer, drainage, paving, grading, and detention contractors who bid Greater Houston MUD work every week.
- Keeps your cash out of a cashier's check
- Made out to the exact obligee in your packet
- Harris, Fort Bend, Montgomery, Brazoria, Waller
What it is
What is a MUD bid bond?
A MUD bid bond is the bid security you put in with a bid on a municipal utility district job. It guarantees the district that if you are the low bidder, you will sign the contract at your bid price and deliver the performance and payment bonds.
MUDs are the special districts that finance and own the water, sewer, drainage, and often the roads in new subdivisions around Houston. They, along with water control and improvement districts (WCIDs), fresh water supply districts, and most other Texas water districts, bid construction under Water Code Chapter 49. The district's engineer takes the bids and opens them in public, and the district's board awards the contract.
You are the principal, the contractor making the promise. The district, or the developer letting the job for it, is the obligee the bond protects. The surety is the insurance company that pays the obligee if you walk away from a winning bid.
Who needs one
Civil and site trades bid MUD work every week.
In the MUD invitations to bidders we read, every one required bid security, from small fence jobs to water plants.
Water, sewer & drainage
Water lines, sanitary and storm sewer, lift stations, and plant work. The biggest share of MUD lettings.
Paving & concrete
Street paving for each new subdivision section, plus repair packages.
Clearing, grading & detention
Mass grading, detention ponds, and channel work, often developer-let.
Landscape, hardscape & fencing
Entries, trails, parks, and fence replacement. Small jobs, same bid bond rule.
Bridges & structures
Small vehicle and pedestrian bridges and box culverts.
Coatings & plant repair
Tank coatings, chlorine conversions, and plant upgrades.
The rules
How much bid security a Texas water district requires.
Water Code Chapter 49 sets the floor by contract size. The district's invitation to bidders can ask for more, never less.
| Contract size | What the district must do | Source |
|---|---|---|
| $25,000 or less | No advertising or competitive bids required | Water Code §49.273(f) |
| Over $25,000 to $150,000 | Written competitive bids from at least three bidders | §49.273(e) |
| Over $50,000 | Bid security of at least 2% of the total bid: a certified or cashier's check on a Texas bank, or a bid bond from a surety authorized in Texas | §49.271(c) |
| Over $150,000 | Newspaper notice once a week for two weeks, first notice at least 14 days before bid opening | §49.273(d) |
| Over $250,000 | District must accept a bid bond in the amount it requires | §49.271(c) |
The bid security rule does not apply to buying equipment, materials, or machinery that is not built into a construction project (§49.271(c)).
2% or 5%: who let the job decides
The district board lets some jobs itself. A developer lets others "on behalf of" the district, usually for a section it is building. Section 49.271(f) applies the same rules to both, so the 2% floor holds either way, but the packets differ. In 91 invitations to bidders from one Houston engineering firm's bid board:
| Who let the job | Asked 2% | Asked 5% |
|---|---|---|
| District board 60 invitations | 37 | 23 |
| Developer on behalf of the district 31 invitations | 4 | 27 |
Sample read October 2026 from one engineering firm's templates. Other engineers may differ, so treat it as a pattern, not a rule.
Bond or check
MUD bid bond vs. cashier's check.
Every MUD packet we read takes either one. The check ties up cash; the bond doesn't.
| On a $400,000 bid | Cashier's check | Bid bond |
|---|---|---|
| At 2% (district-let) | $8,000 out of your account | No cash out. The $8,000 is a guarantee |
| At 5% (developer-let) | $20,000 out of your account | No cash out. The $20,000 is a guarantee |
| Electronic bid | Harris County MUD 539's packet requires the original check at the engineer's office within one business day of bid opening | Goes in through the same bid site with your bid |
Districts may take bids electronically once the board adopts e-bidding rules (Water Code §49.2731), and many of the Houston-area MUD packets we read do. What the bid bond itself costs depends on the surety and your program; see Texas bid bond cost. We confirm yours when you apply.
After you win
Seven days to bond the contract.
The low bidder's clock is short. Line up the final bonds before bid day.
Deadline
The Harris County MUD packet we read and a Fort Bend County MUD listing allow seven days after you receive the contract documents to return the bonds and insurance certificates. Your packet sets the actual deadline.
Performance & payment
The contractor must give performance and payment bonds under Government Code Chapter 2253 (Water Code §49.275): a performance bond on contracts over $100,000 and a payment bond over $25,000. MUD packets usually ask for both at the full contract amount.
Maintenance
Many packets add a maintenance bond for the full contract amount. The contract sets the warranty term; one year is common in the packets we have read.
Retainage
The district holds back 10% of each progress payment until final completion. After the work is half done, the board may release the rest of the payments in full if progress is satisfactory (Water Code §49.276(d)).
If you walk away
A low bidder who fails to sign the contract or furnish the bonds forfeits the bid deposit (Water Code §49.271(c)).
How to get bonded
Four steps, set up once.
- 01
Prequalify once
For single jobs up to about $1M, our credit-based program needs your credit and a short application. Larger jobs need financial statements and a work-in-progress schedule. Do it before your first bid, not the morning of.
- 02
Send the invitation to bidders
Email the ITB or bid form, your bid amount, and the opening date and time. We check the percentage and the exact obligee wording. Our pre-bid bid bond checklist lists the rest.
- 03
Bond issued as a PDF
The bid bond is issued by our surety partners and emailed to you as a PDF, made out to the obligee exactly as your packet names it, ready to upload or print.
- 04
Win, then bond the contract
If you are the low bidder, we write the performance, payment, and maintenance bonds the contract calls for, inside the packet deadline.
Legal requirements
Statute and surety.
Statute
Water Code §49.271(c) sets the bid security, §49.273 the advertising and award, §49.2731 electronic bids, and §49.275 the performance and payment bonds. Chapter 49 covers Texas water districts except navigation districts, port authorities, and most groundwater districts (§49.001, §49.002). The board can reject any or all bids.
Surety
The bid bond must come from a surety legally authorized to do business in Texas. The district may also adopt minimum criteria for the sureties on its performance and payment bonds (§49.271(c)).
Why Surety Bond Houston
MUD bid openings run on the engineer's clock.
Houston-area depth
40+ years of combined experience. We read your invitation to bidders before we write the bond, so the percentage and obligee match.
Same-day bid bonds
Once you are prequalified, bid bonds issue the same day for approved jobs, delivered as a PDF before the opening.
Bid to closeout
One program covers the bid bond, then the performance, payment, and maintenance bonds when you win.
Related bonds
The bonds around a MUD job.
FAQ
MUD bid bond questions.
What is a MUD bid bond?
A bid bond for a municipal utility district (MUD) or other Texas water district job. It guarantees that if you win, you will sign the contract and deliver the performance and payment bonds. Water Code §49.271(c) requires one, or a cashier's check, on every district construction contract over $50,000.
Is a MUD bid bond 2% or 5%?
The statute sets a floor of 2% of the total bid. The bid packet can ask for more. In the packets we read, district-let jobs mostly asked for 2% and developer-let jobs mostly asked for 5%. Some set one percentage for a check and a higher one for a bond. Use the figure in your invitation to bidders.
Who is the obligee on a MUD bid bond?
Whoever the invitation to bidders names. On a district-let job that is the district itself, for example "Harris County Municipal Utility District No. 539". On a developer-let job it is usually the developer acting for the district, written out in full, for example "D.R. Horton - Texas, Ltd. on behalf of Montgomery County Municipal Utility District No. 202A". Copy the name exactly.
Can a MUD refuse my bid bond and demand a cashier's check?
Not on a contract over $250,000. Water Code §49.271(c) says the district must accept a bid bond in the amount it requires, as long as the bond meets the rest of that subsection. Below $250,000, the district may set its own criteria.
How long do I have to post bonds after I win a MUD job?
The invitation to bidders sets it. The Harris County MUD packet we read and a Fort Bend County MUD listing allow seven days after you receive the contract documents to return the performance and payment bonds and insurance certificates. If you fail to sign or furnish the bonds, Water Code §49.271(c) says you forfeit the bid deposit.
Where are MUD construction jobs advertised?
District engineers post them on their own online bid boards (LJA's bids.lja.com is one) and in plan rooms such as AGC of Texas, ConstructConnect, Dodge, and Amtek. Contracts over $150,000 must also run in a local newspaper once a week for two weeks, with the first notice at least 14 days before bid opening (Water Code §49.273(d)).
Ready when you are
Get prequalified before the next MUD letting.
Set up once, then bid every district section that fits your crew.