Published
Amending a recorded plat: the Administrator's desk, and the one thing an amendment cannot do.
Recorded plats are not final in the everyday sense
A recorded plat feels permanent — lines at the county recorder, lot numbers that title reports quote for a century. In practice plats get corrected, adjusted and re-recorded, and Fremont County has a named procedure for it. Appendix L Division 3 governs plat amendments, and it begins by setting the form: an amendment plat should be submitted in substantially the same form as a final plat, which means the whole apparatus of certificates and drafting standards described in what goes on a final plat travels with it.
What changes is who reads it, what it may do, and who must sign. Those three differences are the section.
What an amendment may not do
The Division's operative limit is one sentence long, and it is the sentence to read before anything else:
“The amendment plat shall show the dimensions and acreage of all parcels that have been modified. New parcels may not be created by amendment.”
— Fremont County Development Code, 2011 Edition (Ordinance 2011-04), Appendix L, section 1.05.020. Consolidated through Ordinance 2026-03. Retrieved 7 September 2026
An amendment modifies parcels; it does not create them. The code's own drafting rule — show the dimensions and acreage of all parcels that have been modified — tells you what it expects to see on the paper:
- Lot-line adjustments between existing parcels, where boundaries move but the parcel count does not.
- Corrections: a mis-stated dimension, a bad bearing, a label that never matched the ground.
- Easement changes drawn over the recorded lines they cross.
- Reconfigured dimensions and acreage where the modified parcels end at different numbers than the original plat printed.
Adding a lot is subdivision business, with the notice, review and improvement requirements that path carries. The line between the two is exactly where money and calendar live, so it is worth establishing which side of it your project falls on before paying anyone to draw.
The Administrator's desk, not the Commission's
The second structural difference is the reviewer. Section 1.05.050 states that plat amendments are reviewed by the Administrator rather than the Commission before being presented to the Board, and that the approval certificates on an amendment plat should be for the Administrator and the Board.
That is a quieter path than a new subdivision takes — no Commission hearing on the amendment itself — but it is still a recorded proceeding that ends at the Board, and the amendment plat must be clearly identified as such on its face. Anyone reading the recorder's index later should be able to tell, from the document itself, that it amends something earlier rather than standing alone.
The overlay key, and the signatures
Two drafting requirements carry most of the section's meaning. The amendment plat must include a key showing all changes made as an overlay over the final plat originally recorded — the new drawing sits on top of the old one, and the difference between them is the amendment. And the certificate of consent must be signed by all owners of record affected by the amendment, which on a boundary adjustment means every neighbor whose line moves, not just the applicant.
The county's own application form adds the practical layer. It is a one-page minor amendment application from the Planning and Building Department at 125 N. Bridge St. Suite 1, St. Anthony — (208) 624-4643, and what it asks for is the quickest honest summary of the process:
| What the form asks or charges | As printed |
|---|---|
| Review time | “The review process will require 7-10 working days” |
| County surveyor fee | $200, plus $25 per lot |
| The date question | “Has the property been divided or changed configuration since June 8, 1995?” |
| Drawings | Proposed division, structures and all property lines, with two copies of final plat Mylars for recording, following the Appendix L standard |
| Attachments | A parcel map available from the Assessor's office, and a warranty deed or evidence of the current owner |
The form's referral prompts ask the applicant to think past the boundary lines, because each answer can change what the amendment has to show:
- Whether the Idaho Department of Water Resources would allow a well on the changed parcels.
- Whether the fire district can reach the parcel, and whether address numbers will be visible from the road.
- Whether a utility company can extend power to the reconfigured ground.
- What Eastern Idaho Public Health makes of the ground for septic — the county's form asks for its view by name.
The June 8, 1995 question is doing more work than a date on a form usually does. It is the county asking whether this ground has already been through a division under the modern regime — which is the same question the code's amendment rules circle back to, because what may be modified depends on what was lawfully created, and when.
Where the form and the code pull in different directions
Read closely, the form and the Division disagree in tone if not in law. This site has flagged this shape of mismatch before — the county's own permit packet printing two different setback lists — and the honest reading is the same here: the form's language is looser than the code's, and the code is the rule the Administrator applies.
| Question | What the code says | What the form says |
|---|---|---|
| Can this create parcels? | New parcels may not be created by amendment | Asks for the size of new proposed parcels, and warns that building on “the newly created parcel” may require further permits |
| Who reviews it? | The Administrator, before presentation to the Board | Sets an expectation of 7-10 working days — a desk timeline, consistent with administrative review |
| What must it show? | Modified parcels' dimensions and acreage, with a key overlaying the originally recorded plat | Proposed division, structures and all property lines, with two Mylar copies for recording |
| Who signs? | All owners of record affected by the amendment | Owner and applicant signature lines, with the referral answers attached |
A minor amendment adjusts what exists; the moment a genuinely new parcel appears, the application is not minor anymore. Confirm which one you are filing at (208) 624-4643 before the surveyor bills for the wrong drawing.
What to line up before filing
- Establish what the amendment is doing — adjusting lines and dimensions among existing parcels, or attempting something the code routes to subdivision instead.
- Identify every owner of record affected, including neighbors on a moving line, because each signs the certificate of consent.
- Pull the originally recorded plat, since the amendment's key must overlay it, and pull the parcel map from the Assessor's office as the form asks.
- Set expectations on the calendar: 7 to 10 working days of county review on the form, plus surveyor time before it, plus recording after the Board.
- Budget the county surveyor fee the form prints — $200 plus $25 per lot — as a county-side cost separate from your own surveyor's bill.
- Check whether the changed ground affects addressing, because a reconfigured parcel can need the county's address process before anything builds on it — no address, no building permit.
- Order two final plat Mylars, since the form asks for two copies for recording.
An amendment is the cheap end of platting — when it is available. The whole game is establishing early that what you want to do is still an amendment by the time the Administrator reads it.
Common questions
Can a plat amendment create a new lot?
No. Appendix L section 1.05.020 states that the amendment plat shall show the dimensions and acreage of all parcels that have been modified, and that new parcels may not be created by amendment. Creating a lot is subdivision and takes the subdivision path with its own notice and review.
Who reviews a plat amendment in Fremont County?
The Administrator, rather than the Commission, reviews a plat amendment before it is presented to the Board. The approval certificates on the amendment plat should be for the Administrator and the Board.
What form does an amendment plat take?
Substantially the same form as a final plat, with the full certificate apparatus that carries. It must be clearly identified as an amendment, show the dimensions and acreage of all modified parcels, and include a key showing all changes as an overlay over the final plat originally recorded.
Who has to sign a plat amendment?
The certificate of consent must be signed by all owners of record affected by the amendment. On a lot-line adjustment that means every neighbour whose boundary moves, not only the person filing.
How long does a minor plat amendment take?
The county's minor amendment application states the review process will require 7 to 10 working days, before surveyor time ahead of it and recording after the Board acts.
What does a plat amendment cost at the county?
The application form prints a county surveyor fee of $200 plus $25 per lot, alongside the application fee line itself. Your own surveyor's charge for the amendment plat and the overlay key is separate and set by that firm.
Why does the form ask about June 8, 1995?
The application asks whether the property has been divided or changed configuration since June 8, 1995 - the county establishing whether the ground has already been through a division under the modern regime, which bears on what may be modified by amendment now.
Does the county's form agree with the code?
Not entirely. The form asks for the size of new proposed parcels and refers to a newly created parcel, while the code states new parcels may not be created by amendment. The code is the rule the Administrator applies; confirm which process your project actually is before filing.
What has to be attached to the application?
A parcel map from the Assessor's office, a warranty deed or evidence of the current owner, and drawings showing the proposed division, structures and all property lines, with two copies of final plat Mylars for recording following the Appendix L standard.