To legally change property lines between two existing lots, you hire a licensed surveyor to map the new boundary, sign a written agreement with the affected neighbor, secure zoning approval and mortgage lender consent, then record a revised deed with the county. Skipping any of those steps can leave you with a line that neighbors accept but courts, lenders, and future buyers do not.
The path below assumes you are shifting a boundary between two parcels that already exist, which is called a lot line adjustment. If you are splitting one parcel into new lots, that is a subdivision, and it runs on a heavier track with environmental review, public hearings, and often infrastructure requirements. Confirm the category with your planning department before you spend money; applying for the wrong one wastes months.
Confirm It’s a Lot Line Adjustment
A lot line adjustment shifts the boundary between two existing parcels without creating any new lots. The total number of parcels on the tax rolls stays the same. Counties usually handle these at the staff level, with lower fees, fewer notices, and no public hearing in many cases.
A subdivision splits one parcel into two or more new lots, each needing its own tax identification number and utility connections. That process frequently requires environmental review, traffic studies, and a planning commission hearing. If your goal is to move a fence line, absorb a strip of your neighbor’s yard, or clean up an old encroachment, you almost certainly need a lot line adjustment. If you are carving out a buildable lot to sell, that is a subdivision and the timeline and cost jump significantly.
Your local planning or community development department can tell you which category applies, often in a single phone call or a short pre-application meeting.
Hire a Licensed Land Surveyor
A licensed surveyor is the starting point. The surveyor measures the property, locates existing markers and monuments, researches historical deeds and prior surveys, and produces a plat map showing the current and proposed boundaries along with structures, easements, and setbacks. That plat is the foundation document every later step depends on.
Most residential boundary surveys take one to two weeks. Large parcels, heavy tree cover, irregular terrain, or gaps in the historical record can stretch the timeline. Expect to pay roughly $1,200 to $5,500 depending on size, location, and complexity. The surveyor’s certification is what gives the plat legal weight when you submit it to the planning office or record it with the county.
If a title insurer or lender needs to insure the new boundaries, ask whether they require an ALTA/NSPS Land Title Survey rather than a standard boundary survey. ALTA surveys follow national standards and cost more, so confirm what is actually required before ordering one. The 2026 ALTA/NSPS standards took effect February 23, 2026, and surveyors follow whichever standard is more stringent when state requirements conflict with the national ones.
Put the Agreement in Writing
Once you and the neighbor agree on where the new line should sit, the next step is a written boundary agreement. It identifies the adjusted boundary, references the certified survey, and is signed by every owner whose parcel is affected. Many jurisdictions require notarization.
Have a real estate attorney draft or review the agreement. The language has to hold up if either property changes hands later. Hourly rates for real estate attorneys handling boundary work generally run from about $50 to over $400, with most falling in the $150 to $300 range. Some attorneys handle straightforward boundary agreements on a flat-fee basis.
Address any structures or improvements that will end up on the “wrong” side of the new line. If a shed, driveway, or fence will cross onto the neighbor’s adjusted parcel, resolve it in the agreement now rather than leaving it as an unrecorded encroachment.
Check Zoning Before You File
Local zoning codes set minimum standards for lot size, frontage, depth, setbacks, and land use. A boundary adjustment that shrinks either parcel below the minimum lot size, or that pushes a building closer than the required setback, creates a nonconforming condition. Most planning departments reject that outright. Run both resulting parcels against every applicable standard before you submit anything.
The formal application goes to your planning or community development department. You submit the certified survey, the boundary agreement, a narrative explaining the purpose of the adjustment, and whatever supplemental materials the jurisdiction requires. Some jurisdictions handle lot line adjustments administratively. Others require notice to adjacent owners or a hearing before a zoning board.
If the adjustment would create a nonconforming lot, you may need a variance. Variances require a separate application, almost always involve a public hearing, and demand proof of hardship beyond convenience. This is where many boundary adjustments stall, so check the lot dimensions early. Zoning review adds anywhere from a few weeks to several months depending on your jurisdiction’s backlog and whether a hearing is required.
Get Mortgage Lender Consent
This step is the one people most often overlook, and it can unravel the entire project. If either parcel carries a mortgage, the lender holds a lien on the property as it currently exists. Changing the boundaries changes the collateral. Most mortgage contracts include a due-on-sale clause that lets the lender demand full repayment if any part of the property is sold or transferred without written consent. Federal law authorizes lenders to enforce these clauses, defining a triggering event broadly as selling or transferring “all or any part of the property, or an interest therein.”1Office of the Law Revision Counsel. 12 USC 1701j-3 – Preemption of Due-on-Sale Prohibitions
A lot line adjustment that transfers a strip of land to your neighbor is exactly the kind of partial transfer that can trigger that clause. The lender is not required to consent, and some will not. Contact your loan servicer and request either written approval of the boundary change or a partial release of the lien covering the transferred portion. Lenders that consider partial releases often require at least 12 months of on-time payments, a current appraisal, and proof that the remaining property still supports the loan balance at an acceptable loan-to-value ratio. Expect a nonrefundable application fee and a processing timeline of several weeks.
If the lender refuses, your options narrow. Some owners refinance based on the new legal description after planning approval, paying off the old note and starting a new one that reflects the adjusted parcel. Others restructure the deal so no land actually changes hands, using easements instead. Proceeding without lender consent risks a demand for full repayment.
Deal with Easements and Encroachments
Easements and encroachments are the most common complications in boundary work. Before finalizing any new line, pull the existing deeds and check the county’s public land records for recorded easements. Utility, drainage, and access easements all restrict what you can do with the affected portion of your property, and moving a boundary line through an active easement will get flagged by both the planning department and the easement holder.
Easements come in several forms. An express easement is created by a written agreement and recorded with the deeds. An implied easement can arise when a single tract is divided and one resulting parcel has no access to a road or utility without crossing the other. Prescriptive easements develop when someone uses your property openly and without permission for a continuous period, which in most states ranges from 5 to 30 years.2Justia. Easements Under Property Law – Section: Creation of Easements All three types can restrict where you draw a new boundary.
Encroachments are structures or improvements that physically cross onto a neighbor’s land. A fence built two feet over the line, a garage with eaves that overhang, or a driveway that curves onto the adjacent lot all qualify. Your options are to negotiate removal, formalize the encroachment through a written license or easement (which also blocks a later adverse possession claim), adjust the property line so the encroachment falls within the correct parcel, or go to court if the neighbor will not cooperate.
A boundary adjustment can also create new easements. If moving the line would cut off one parcel’s road access or interrupt a utility run, you will need to establish an easement across the neighboring property. Document any new easement in both the boundary agreement and the revised deed. Easements continue indefinitely unless the parties end them in writing, the holder abandons the easement, or the same person acquires both properties.3Justia. Easements Under Property Law – Section: Termination of Easements
Revise and Record the Deed
Once zoning approval is in hand and any lender consent is secured, the legal description in each affected deed has to be updated to reflect the new boundaries. Legal descriptions typically use one of three formats: metes and bounds (compass bearings and distances from a starting point), lot and block references from a recorded plat, or coordinates within a government survey system. A real estate attorney drafts the revised deed, incorporating the surveyor’s plat and the boundary agreement. Every party with a legal interest must sign, including co-owners, lenders, and anyone holding an affected easement. Most jurisdictions require notarization.
The revised deed and its supporting documents then go to the county recorder’s office, sometimes called the register of deeds or land records office. Recording puts the boundary change into the permanent public record, which is what makes it enforceable against future buyers, lenders, and title searchers. Until the deed is recorded, the new boundary exists only between the parties who signed it.
Recording fees generally run from about $10 to $100 or more depending on the number of pages, the type of instrument, and whether a new plat map must be filed separately. Bring the original notarized deed, any required cover sheets or transfer tax forms, and payment. You will receive a recorded copy stamped with the filing information; keep it with your property records permanently.
After recording, notify your property insurance carrier and your local tax assessor’s office. The boundary change alters the size and potentially the assessed value of both parcels, which affects property taxes going forward. Some assessor’s offices pick up recorded changes automatically; others require you to submit the new survey.
When You Can’t Agree: Court Orders
Not every boundary change happens by agreement. When neighbors disagree about where the line actually is, or when someone has been using a strip of your land for years and now claims ownership, the dispute ends up in court. Two legal theories come up most often.
Quiet Title Actions
A quiet title action asks a court to declare who actually owns a disputed piece of property. You file a lawsuit naming anyone with a potential claim, present your evidence, and the court issues a judgment establishing ownership. That judgment gets recorded with the county, updating the public record. Quiet title actions resolve boundary disputes, conflicting deeds, old liens, and breaks in the chain of title. It is the standard tool when the paperwork does not match reality and no one can sort it out voluntarily.
Adverse Possession Claims
Adverse possession lets someone who has openly occupied another person’s land for a long enough period claim legal ownership. The required time period varies dramatically by state, from as few as 5 years in some jurisdictions to 20 or more in others. The possession must be continuous, open and obvious, hostile (without the owner’s permission), exclusive, and actual. Many states also require that the possessor have paid property taxes on the disputed land or hold some form of deed, even a defective one.
If you are the owner, this is why boundary disputes should not sit for years. The longer an encroachment or unauthorized use continues without objection, the stronger an adverse possession claim becomes. If you have been maintaining and using a strip of your neighbor’s land for decades without permission, you may have grounds to formalize your claim. Either way, adverse possession disputes almost always require litigation and a court order to resolve.
Cost and Timeline
Court-ordered boundary changes are the most expensive path. Between attorney fees, expert surveyor testimony, title research, and court costs, contested boundary litigation runs from several thousand dollars for a straightforward dispute to tens of thousands for complex cases involving historical deed conflicts or competing adverse possession claims. Cases move at the pace of the court’s docket, which in many jurisdictions means months or longer from filing to resolution. Litigation is a last resort, but it provides a definitive answer when negotiation fails.