Is an electronic signature legally valid?

Yes. Under the federal ESIGN Act (15 U.S.C. ch. 96) and state UETA laws, electronic signatures are generally as enforceable as handwritten signatures when the parties demonstrate intent, consent, attribution, and reliable retention.

When is notarization required?

Notarization is typically not required for most modification agreements, but it is required when the modification affects title, must be recorded, or when a jurisdiction or counterparty specifically demands a notarized acknowledgement.

Can I use remote online notarization (RON)?

If your state permits RON, you may use it provided identity-proofing, audio-video recording, and record-retention requirements are met; verify the state's notary commission rules.

Who must sign the agreement?

Authorized representatives with corporate or owner authority must sign; verify signatory authority in advance to avoid challenges to enforceability or payment.

How do I cancel or revoke a signed modification?

Revocation requires mutual agreement or a contract provision allowing termination; unilateral rescission is limited and may expose the revoking party to breach claims if obligations were already performed.

How should I store the executed agreement securely?

Store signed copies and audit trails in a secure document management system with access controls, encryption at rest and in transit, and retention policies that meet industry and regulatory requirements.

Electronic Signature
Templates
Miscellaneous
Site Modification Agreement

Site Modification Agreement

This template is fully customizable. Edit the text, fill out the fields, and send it for signature. Give it a try!

SITE MODIFICATION AGREEMENT

This Site Modification Agreement (the Agreement) is made effective as of by and between Client Name: and Contractor Name: .

Client Address: Contractor Address:

RECITALS

WHEREAS, Client operates and maintains an online presence (the Site) and desires certain modifications, improvements, or updates to be performed to the Site; and

WHEREAS, Contractor represents that it possesses the experience, skill and personnel necessary to provide the modification, design, development and implementation services described in this Agreement; and

WHEREAS, the parties desire to set forth the terms and conditions under which Contractor will perform the Site modifications and Client will compensate Contractor.

SCOPE OF WORK

Contractor shall perform the services and deliver the deliverables described below (collectively, the Services). The Services shall include any development, configuration, content updates, integrations, testing, and deployment necessary to implement the modifications specified by Client.

Detailed Description of Modifications and Services: Deliverables and Acceptance Criteria:

PAYMENT TERMS

In consideration for the full, timely and professional performance of the Services, Client shall pay Contractor fees as set forth below. All fees are payable in U.S. dollars unless otherwise agreed in writing.

Total Fee (Fixed or Estimated): Payment Schedule and Milestones: Late Payment Fee and Interest:

Client shall pay undisputed invoices within the number of days specified in the payment schedule. Disputed portions must be notified in writing and will be resolved in good faith. Taxes (if any) shall be the responsibility of the party required by applicable law.

TERM AND TERMINATION

Term: This Agreement commences on and continues until unless earlier terminated in accordance with this Section.

Notice Period for Termination (days):

Termination for Cause: Either party may terminate this Agreement for material breach by the other party if the breaching party fails to cure the breach within the notice period set forth above. Termination for Convenience: Either party may terminate upon the delivery of the notice described above subject to Client’s obligation to pay for all Services performed and unpaid through the effective date of termination and any non-cancellable commitments.

CONFIDENTIALITY

Definition: "Confidential Information" means non-public information disclosed by one party to the other that is designated confidential or that reasonably should be understood to be confidential given the nature of the information and the circumstances of disclosure, including without limitation trade secrets, source code, technical designs, business plans and customer lists.

Obligations: Receiving party shall (a) use Confidential Information solely to perform its obligations under this Agreement, (b) restrict disclosure to those employees, contractors or agents with a need to know and who are bound by confidentiality obligations no less protective than those herein, and (c) exercise at least the same degree of care to protect Confidential Information as it uses to protect its own confidential information, but in no event less than reasonable care.

Exclusions: Confidential Information does not include information that is or becomes generally available to the public other than by a breach of this Agreement, independently developed by the receiving party without use of the disclosing party's Confidential Information, or rightfully obtained from a third party without restriction.

Remedies: The parties acknowledge that a breach of this Section would cause irreparable harm for which monetary damages would be an insufficient remedy, and agree that injunctive relief shall be an appropriate remedy in addition to any other remedies available at law or in equity.

CHANGE ORDERS

Any material change to the Scope of Work, schedule, or deliverables requested by Client shall be implemented only upon written change order signed by both parties. Change orders shall specify adjustments to price, schedule and any impact on deliverables.

GOVERNING LAW

This Agreement shall be governed by and construed in accordance with the laws of the State of without regard to principles of conflict of laws. The parties submit to the exclusive jurisdiction of the courts located in that state for any dispute arising out of or relating to this Agreement.

ENTIRE AGREEMENT

This Agreement, including all exhibits and executed change orders, constitutes the entire agreement between the parties with respect to the subject matter hereof and supersedes all prior and contemporaneous agreements, proposals, representations and communications, whether oral or written. No amendment or modification of this Agreement will be binding unless in writing and signed by both parties.

MISCELLANEOUS

Independent Contractor: Contractor is an independent contractor and shall be solely responsible for payment of all compensation due to its employees and contractors and for withholding and paying all employment-related taxes. Limitation of Liability: Except for breaches of confidentiality or willful misconduct, neither party shall be liable for incidental, consequential, special or punitive damages. Indemnification: Each party agrees to indemnify, defend and hold harmless the other from and against third party claims arising from its negligence or willful misconduct in performance of this Agreement.

Client Printed Name:

By:

Date:

Contractor Printed Name:

By:

Date:

What the Site Modification Agreement Is and when it applies

A Site Modification Agreement is a written contract that documents agreed changes to an existing site, property, or project scope—such as alterations to construction plans, equipment placement, access routes, environmental controls, or utility connections. It records the parties involved, the modified scope of work, any pricing or schedule adjustments, responsibilities for permits and inspections, and acceptance criteria. Use this agreement when modifications affect rights, encumbrances, or performance milestones so parties have a clear, enforceable record of the change and any related compensation or schedule changes.

Why a clear Site Modification Agreement matters

A concise, signed modification agreement reduces dispute risk, aligns expectations, and documents adjustments that can affect permits, insurance, and payment. It preserves evidence of mutual consent and creates a clear basis for enforcement if performance or payment disagreements arise.

Who typically prepares and signs a Site Modification Agreement

Teams that commonly prepare and sign these agreements include project managers, property owners, contractors, and permitting officers; each party uses the form to document the same change from their perspective.

Project managers and contractors: document scope, schedule, and cost changes to avoid later disputes and to update project baselines.
Property owners and tenants: confirm consent to on-site changes, access rules, and cost-sharing for modifications affecting property use.
Permitting or facilities teams: record obligations for permits, inspections, restoration, and compliance with local codes.

Use the agreement to assign responsibility, preserve evidence for inspections or recordation, and enable timely payment and scheduling adjustments.

Essential sections to include in a professional Site Modification Agreement

A thorough agreement organizes the modification into discrete, enforceable terms so signers can quickly verify responsibilities, timelines, costs, and acceptance criteria.

Parties

Full legal names and contact details for each party, including role (owner, contractor, tenant) and authorized representative for executing changes.

Scope

Precise, itemized description of the modification with drawings or exhibits attached; define what is added, removed, or altered and reference original contract provisions.

Price and Payment

State any additional payment, credits, or change-order pricing, payment schedule, retainage, and invoicing procedures tied to the modification.

Schedule

Specify start and completion dates for the modification, milestones, delay allowances, and any liquidated damages or extensions.

Permits and Compliance

Assign responsibility for permit applications, inspections, code compliance, environmental controls, and utility notifications.

Acceptance and Warranty

Define acceptance testing, remedy procedures for defects, warranty coverage tied to the modification, and procedures for final sign-off.

Step-by-step: completing a Site Modification Agreement

Follow these steps in order to prepare, review, and execute a clear modification agreement with minimal rework.

01

Draft the Change: Describe the modification, attach exhibits, and reference the original contract.
02

Assign Costs: Calculate price changes, payment terms, and any retainage or credits.
03

Confirm Permits: Identify permit needs and which party will obtain approvals.
04

Execute and Distribute: Obtain signatures, notarize if needed, and circulate final copies to all parties.

Configuring an online workflow for the agreement

Set up a digital workflow that enforces signer order, authentication, and storage to reduce signing friction and audit questions.

Field	Configuration
Signer Order	Sequential or parallel routing, lock fields until prior signer completes.
Authentication	Email confirmation, SMS code, or stronger KBA per risk level.
Template Fields	Pre-place signature, date, initials, and exhibit attachments for repeat workflows.
Storage	Auto-save to designated cloud folder and retain audit trail.

Typical routing and submission flow for the signed agreement

A consistent submission flow reduces missing signatures and ensures the agreement is recorded with the right parties and systems.

Upload: Sender uploads the drafted agreement and attaches exhibits.
Place Fields: Add signature, date, and conditional fields in the document.
Send to Signers: Distribute via email or secure link with required authentication.
Capture Audit Trail: System records timestamps, IP, and signer actions for proof.

Digital delivery, signing, and file format considerations

Ensure the platform you use supports the file formats, signer authentication, and storage controls your organization requires.

File Formats: PDF and DOCX supported; maintain original exhibits as embedded attachments.
Authentication: Email, SMS, or KBA options; use stronger auth for high-risk changes.
Integrations: Sync signed copies to cloud storage or project management systems.

Typical timing and deadline items to track

Track dates that affect performance, permitting, and payment to avoid penalties or project delays.

Effective Date:

Date when the modification becomes binding and obligations commence.

Permit Deadline:

Date by which required permits must be filed or obtained.

Work Start Date:

Scheduled beginning of on-site modification activity.

Completion Milestone:

Target date for completion and acceptance testing.

Payment Due Date:

When adjusted payments or retainage become payable.

Consequences of incorrect or incomplete Site Modification Agreements

Contract Disputes: Delay claims or extra costs may arise from ambiguous scope.

Permit Violations: Unpermitted work can trigger fines or stop-work orders.

Payment Liability: Absent clear pricing, parties may dispute owed amounts.

Insurance Gaps: Coverage may be voided if scope differs from policy notice.

Recording Errors: Incorrect attachments can prevent proper filing with land records.

Invalid Signatures: Missing authority or improper signing can void the agreement.

Common mistakes to avoid when preparing the agreement

Vague scope descriptions that refer to 'work as required' instead of specific drawings, quantities, or locations.
Failing to attach updated plans or marked-up exhibits, which creates uncertainty about what was actually approved.
Not assigning permit responsibility, causing delays when inspections or approvals are required before work starts.
Skipping signer authority verification; ensure signers have corporate or owner authorization to bind the party.

Representative eSignature vendor pricing and capability snapshot

Compare starting price and key capabilities when selecting an eSignature provider for Site Modification Agreements; plan needs vary by volume and compliance requirements.

	signNow	DocuSign	Adobe Sign	PandaDoc	HelloSign
Starting Price	$8/user/mo	$15/user/mo	$14/user/mo	$19/user/mo	$15/user/mo
Free Trial	7-day free trial	Varies	Varies	Varies	Varies
Bulk Send	Yes	Yes	Yes	Yes	Varies
Audit Trail	Yes	Yes	Yes	Yes	Yes
HIPAA Compliant	Yes	Yes	Yes	No	No

Answers to common questions about Site Modification Agreements and eSigning

These frequently asked questions address legal validity, signature authority, notarization, revocation, and secure storage for modified agreements.

Need help? Contact support

Is an electronic signature legally valid?
Yes. Under the federal ESIGN Act (15 U.S.C. ch. 96) and state UETA laws, electronic signatures are generally as enforceable as handwritten signatures when the parties demonstrate intent, consent, attribution, and reliable retention.
When is notarization required?
Notarization is typically not required for most modification agreements, but it is required when the modification affects title, must be recorded, or when a jurisdiction or counterparty specifically demands a notarized acknowledgement.
Can I use remote online notarization (RON)?
If your state permits RON, you may use it provided identity-proofing, audio-video recording, and record-retention requirements are met; verify the state's notary commission rules.
Who must sign the agreement?
Authorized representatives with corporate or owner authority must sign; verify signatory authority in advance to avoid challenges to enforceability or payment.
How do I cancel or revoke a signed modification?
Revocation requires mutual agreement or a contract provision allowing termination; unilateral rescission is limited and may expose the revoking party to breach claims if obligations were already performed.
How should I store the executed agreement securely?
Store signed copies and audit trails in a secure document management system with access controls, encryption at rest and in transit, and retention policies that meet industry and regulatory requirements.

be ready to get more

Join over 28 million airSlate SignNow users

Sign Now