Texas Rule 106 Explained: A Practical Guide to Substitute Service in Texas
Texas Rule 106 Explained: When a defendant avoids service, refuses to answer the door, or cannot be personally served despite multiple attempts, Texas Rule 106 may provide a solution.
When a defendant avoids service, refuses to answer the door, or cannot be personally served despite multiple attempts, Texas Rule 106 may provide a solution.
Texas Rule 106 is one of the most important provisions of the Texas Rules of Civil Procedure because it allows courts to authorize alternative methods of service when traditional service attempts have been unsuccessful.
For attorneys, paralegals, collection agencies, businesses, and legal support staff, understanding Rule 106 can help prevent delays, reduce litigation costs, and keep cases moving forward.
In this guide, we explain how Texas Rule 106 works, when substitute service may be authorized, what evidence courts typically require, and how professional process servers help establish the due diligence needed for alternative service.
What Is Texas Rule 106?
Texas Rule 106 governs how legal documents may be served on a defendant.
The rule permits service through:
- Personal delivery
- Certified mail
- Court-approved substitute service
Most lawsuits begin with traditional service attempts. However, when those methods fail, a party may request permission from the court to use an alternative method.
This request is commonly known as a Motion for Substitute Service.
Texas Rule 106 Service Methods Comparison
| Service Method | Court Approval Required | Typical Use Case | Advantages |
|---|---|---|---|
| Personal Service | No | Standard service of process | Strongest proof of service |
| Certified Mail | No | Cooperative defendants or businesses | Cost-effective |
| Substitute Service | Yes | Defendant avoids service | Prevents delays |
| Door Posting | Yes | Evasive defendants | Effective when occupancy is confirmed |
| Email Service | Yes | Verified communication exists | Fast and trackable |
| Alternative Court-Approved Method | Yes | Unique circumstances | Flexible solution |
Why Rule 106 Matters
Defendants do not always cooperate.
A defendant may:
- Refuse to answer the door
- Ignore repeated service attempts
- Move without updating records
- Live in a gated community
- Restrict access to a workplace
- Intentionally evade service
Without Rule 106, legal proceedings could be delayed indefinitely.
Rule 106 provides courts with a practical solution to ensure defendants cannot avoid legal action simply by refusing service.
What Is Substitute Service?
Substitute service is a court-authorized method of delivering legal documents when personal service has been unsuccessful.
After reviewing evidence of diligent service attempts, a judge may authorize alternative methods reasonably calculated to provide notice to the defendant.
Examples include:
- Leaving documents with another resident
- Posting documents on the front door
- Affixing documents to the main entrance
- Service by email
- Service through electronic means
- Other court-approved methods
The method authorized depends on the facts of the case and the court’s discretion.
What Evidence Is Required?
Courts generally expect evidence showing that traditional service methods were attempted diligently before substitute service is requested.
Professional process servers often provide:
Multiple Service Attempts
Attempts made at various times, including:
- Morning
- Afternoon
- Evening
- Weekend
This demonstrates a genuine effort to locate the defendant.
Detailed Field Notes
The process server documents:
- Date and time of each attempt
- Property observations
- Vehicles present
- Signs of occupancy
- Conversations with neighbors
- Access restrictions
Photographs
Photos may help demonstrate:
- Residence verification
- Occupancy indicators
- Gated community restrictions
- Posted notices
Locate Service Research
If a defendant appears to have moved, locate service research may help identify a current address before requesting substitute service.
Evidence That Supports a Rule 106 Motion
| Evidence Type | Why It Matters |
|---|---|
| Multiple Service Attempts | Demonstrates due diligence |
| Different Days and Times | Shows reasonable effort |
| Photographs | Verifies occupancy and location |
| Vehicle Information | Helps establish residency |
| Property Observations | Supports affidavit statements |
| Witness Statements | May confirm residency |
| Locate Service Results | Identifies current addresses |
| Detailed Affidavit | Provides evidence for the court |
How Many Attempts Are Required?
Texas Rule 106 does not specify a minimum number of service attempts.
However, courts generally expect evidence showing reasonable diligence.
Many attorneys prefer three to six well-documented attempts before filing a Motion for Substitute Service.
Quality matters more than quantity.
Five attempts conducted at different times are often more persuasive than numerous attempts made under identical conditions.
Common Reasons Courts Grant Substitute Service
Courts may authorize substitute service when evidence demonstrates:
- The defendant is actively evading service
- The defendant resides at the address but refuses contact
- Personal service has repeatedly failed
- Traditional methods are impractical
- Alternative methods are likely to provide notice
Each case is evaluated individually.
The stronger the documentation, the stronger the motion.
Common Reasons Substitute Service Is Granted
| Situation | Likelihood of Court Approval |
|---|---|
| Defendant refuses to answer door | High |
| Defendant hides inside residence | High |
| Defendant observed but avoids contact | High |
| Gated community blocks access | Moderate to High |
| Workplace restrictions prevent service | Moderate |
| Defendant moved from address | Low until current address is verified |
| Only one service attempt made | Low |
| Poor documentation | Low |
Rule 106 and Evasive Defendants
Evasive defendants are common in:
- Debt collection lawsuits
- Business litigation
- Contract disputes
- Family law matters
- Property disputes
Experienced process servers regularly encounter tactics such as:
- Turning off lights when service is attempted
- Watching through windows without answering
- Directing family members to deny residency
- Leaving through alternate exits
- Refusing to identify themselves
Detailed documentation can significantly strengthen a substitute service request.
Can Service Be Posted on the Door?
Possibly.
If a court finds that posting service on the front door is reasonably likely to provide notice, the judge may authorize that method.
However, posting generally requires a court order.
Attorneys should not assume posting is automatically permitted without judicial approval.

Can Email Service Be Authorized?
In some circumstances, yes.
Texas courts have increasingly considered electronic service methods when supported by sufficient evidence.
Relevant factors may include:
- Verified email addresses
- Prior communication history
- Business records
- Evidence showing regular account usage
Courts evaluate whether the proposed method is reasonably likely to provide actual notice.
Rule 106 Process Timeline
| Step | Description |
|---|---|
| Step 1 | Process server receives documents |
| Step 2 | Multiple service attempts are completed |
| Step 3 | Attempts are documented with notes and photographs |
| Step 4 | Affidavit of Due Diligence is prepared |
| Step 5 | Attorney files Motion for Substitute Service |
| Step 6 | Court reviews evidence |
| Step 7 | Judge signs substitute service order |
| Step 8 | Alternative service is completed |
| Step 9 | Return of Service is filed |
| Step 10 | Litigation proceeds |
Good to Know: Free Attorney Resource
Download Our Free PDF
Texas Rule 106 Checklist for Attorneys and Paralegals
This free PDF includes:
- Rule 106 motion preparation checklist
- Due diligence documentation guide
- Recommended service attempt schedule
- Common reasons motions are denied
- Sample process server documentation requirements
- Attorney best practices for substitute service
Best Practices for Attorneys
When planning for possible substitute service:
- Start service immediately.
- Verify address information before filing.
- Consider locate service research early.
- Request detailed field notes.
- Preserve photographs and evidence.
- Review updates after every attempt.
- Prepare Rule 106 motions before deadlines become critical.
A proactive approach reduces delays and increases the likelihood of court approval.
Frequently Asked Questions
What is Texas Rule 106?
Texas Rule 106 governs service of process and authorizes substitute service when traditional methods are unsuccessful.
Does Rule 106 require multiple attempts?
The rule does not specify a number, but courts generally expect evidence of reasonable diligence.
Can a defendant avoid service forever?
No. Rule 106 exists specifically to address situations where defendants evade service.
Can service be posted on the door?
Possibly, but typically only after a court approves substitute service.
Can email be used for substitute service?
Yes, in some cases, when supported by sufficient evidence.
How long does a Rule 106 motion take?
Timing varies by court, but prompt service attempts and detailed documentation can help accelerate the process.
Need Help With Difficult Service?
Houston Process Servers, LLC provides professional process service for law firms, businesses, collection agencies, and government entities throughout Harris County, Montgomery County, and Fort Bend County.
Our team provides detailed documentation, photographs, and court-ready affidavits that can assist attorneys seeking substitute service under Texas Rule 106.
If a defendant is avoiding service, contact Houston Process Servers, LLC to discuss available service options.

