RFP GIS Boundary Alignment

Location:	Montana
Posted:	Apr 9, 2026
Due:	May 13, 2026
Agency:	City of Missoula
Type of Government:	State & Local
Category:	F - Natural Resources and Conservation Services
Publication URL:	To access bid details, please log in.

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Request for Proposals (RFP) for

Boundary Adjustments to Support Adoption of New Parcel Geometry

City of Missoula, Montana

Issue Date: Friday, April 09, 2026

Questions Due: Friday, May 1, 2026

Answers Released: Friday, May 8, 2026

Proposals Due: Wednesday May 13, 2026 at 9:00 AM Mountain Time File Link

City of Missoula, Montana

www.ci.missoula.mt.us

www.missoulamaps.com

435 Ryman St

Missoula, MT 59802

(406) 552-6100 ph.

Contact

Eric Andersen

Sr GIS Analyst

andersene@ci.missoula.mt.us

Table of Contents

1. RFP Process Summary

2. Response Instructions and Conditions

3. Project Overview and Requirements

4. Vendor Response Requirements

5. Evaluation and Selection Process

6. Terms and Conditions

7. Exhibits and Attachments

1. RFP Process Summary

1.1. City of Missoula Description

The City of Missoula is a Montana municipal government within Missoula

County. The City of Missoula maintains authoritative GIS data for

administrative boundaries such as City Limits, wards, service areas, planning

areas, easements and more.

The City is in the process of adopting a new ESRI Parcel Fabric dataset

provided by Missoula County with significantly improved spatial accuracy. The

legacy administrative boundary layers were originally digitized and

maintained relative to the previous parcel geometry and now exhibit spatial

misalignment with the updated parcel fabric.

The City seeks a qualified GIS consultant to perform spatial adjustments and

data reconciliation to align boundary datasets with the new parcel fabric while

preserving legal intent and topological integrity. In summary, the consultant

shall:

 Re-align administrative boundary datasets to the updated parcel fabric.

 Preserve legal descriptions and jurisdictional intent.

 Update/Correct Attributes (Book/Page, Date, URL) based on

the referenced document.

 Maintain or improve topology and data integrity.

 Deliver production-ready, enterprise-compliant GIS datasets.

For vendor’s proposal development purposes, the project context includes:

 Authoritative datasets involved: ~55

 Number of features to evaluate for updates: ~19,700

 GIS Infrastructure:

o ArcGIS Enterprise v11.4

o Versioned feature services can be provided (Branch or

Traditional)

o ArcGIS Pro v3.4

 Current authoritative services can be discovered within the City’s open

data portal at: www.MissoulaMaps.com

1.2. Purpose of the RFP

The purpose of this RFP is to solicit proposals from qualified GIS consultants

to make updates to the City’s authoritative boundary and related GIS datasets

in support of the City’s migration from an isolated parcel dataset to the

County’s authoritative parcel dataset.

1.3. RFP Timeline

Milestone

RFP Issued

Vendor Questions Due

Proposals Due

Notice of Intent to Award

Target Contract Execution

Date

Friday, April 9, 2026

Friday, May 1, 2026

Wednesday, May 13, 2026

Friday, May 22, 2026

Monday, June 1, 2026

1.4. Contacts

All submitted questions should be directed to Eric Andersen by EMAIL ONLY

at GISRFP@ci.missoula.mt.us. A consolidated reply will be provided by the

City in the bid details.

2. Response Guidelines

2.1. Due Dates

Vendor responses must be received by the deadline specified in Section 1.3.

All documents and spreadsheets must be submitted using this proposal file

link File Link. Pricing and contractual terms must remain valid for a minimum

of ninety (90) days following submission.

2.2. Confidentiality / Legal Statement

Any vendor and its representatives must agree to hold information contained

in this RFP as confidential and use it solely for preparing a response.

Public Records: Materials submitted in response to this RFP may become

public records and subject to disclosure under applicable law. Vendors must

clearly mark proprietary or confidential information and provide justification

consistent with applicable public records requirements.

2.3. Vendor Response is Binding

Responses to this RFP may be incorporated into the final contract and may

be binding upon execution.

3. Project Overview and Requirements

3.1. Guiding Principals

The City maintains its authoritative datasets using ESRI technology

within ArcGIS Enterprise v11.4 in an enterprise geodatabase

environment with the ability to leverage either branch versioning or traditional

versioning .

The Missoula County Parcel Fabric is the authoritative spatial framework for

land-based geometry. City boundaries are maintained separately, not integrated

into the parcel fabric.

Under no circumstances shall the consultant edit, reshape, re-coordinate, or

otherwise modify parcel fabric features, parcel lines, parcel polygons, or

associated cadastral control data. Parcel geometry shall remain unchanged

throughout the project. All boundary datasets shall be adjusted to align with the

parcel fabric — not vice versa.

3.2. Objectives and Desired Outcomes

The consultant shall:

 Re-align boundary datasets to the updated parcel fabric while preserving

legal intent.

 Differentiate between:

o Survey-defined boundaries

o Parcel geometry-derived boundaries (eg east 10 feet of lot x)

o Cartographic/service area boundaries

o Infrastructure location-derived boundaries (eg relative to a service

line or main)

 Reconstruct boundaries from parcel fabric geometry where legally

appropriate.

 Maintain all attribution, unique identifiers, and relational integrity.

 Ensure no introduction of:

o Sliver polygons;

o Gaps where contiguity is required;

o Overlaps where exclusivity is required.

 Maintain versioning integrity if applicable based on agreed upon

methodology.

 Document features that are discovered during the course of

research/work that are not included in the City’s dataset. Documentation

shall include feature type and reference source.

3.3. Adjustment Methodology and Data Integration Development

The Consultant must describe a defensible adjustment approach for each data

category that addresses:

 Dependencies between datasets (eg. city limits is dependent

upon/derived from the annexation resolutions; right-of-way derived

from parcel boundaries)

 Document research

 Methodology for adjustment

The proposal must include a suggested methodology for integrating edits into

the City’s authoritative datasets. Integration of changes must be responsive to

changes in authoritative data over time. The City can provide traditional or

branched versioned data connections to authoritative datasets.

The City expressly prohibits:

 Global affine transformations

 Uniform rubbersheeting applied to entire feature classes

 Bulk geometric shifting without parcel-level validation

Methodology must:

 Differentiate between legally fixed boundaries and cartographic

boundaries. [is this being identified and part of a deliverable]

 Avoid blind geometric transformations.

 Ensure parcel fabric remains authoritative.

Spatial adjustment methods must:

 Be parcel-edge driven where applicable.

 Be legally defensible.

 Be documented per data category.

Upon selection the Consultant shall submit a detailed Adjustment and Version

Management Plan including:

 Dependencies between datasets (eg. city limits is dependent

upon/derived from the annexation resolutions; right-of-way derived

from parcel boundaries)

 Document research methodology

 Methodology for adjustment

 Decision matrix for conflicting geometry

 Documentation standards

 Version management

Work shall not proceed until the Adjustment Plan is approved by the City.

This is the opportunity summary page. It provides an overview of this opportunity and a preview of the attached documentation.

Bid Title:	RFP GIS Boundary Alignment
Category:	Professional Services--General
Status:	Open