Setting aside the topographic considerations—focusing solely on the boundary—let’s think about who is authorized to determine it.Mike Mueller wrote: Fri May 09, 2025 8:44 amPlease show me the law that covers a siteplan for a lot line adjustment submittal in Sonoma County. Building code references are for construction documents btw. I am quite familiar with the County's posted requirements and comply with them.DWoolley wrote: Thu May 08, 2025 10:54 am While local agency culture and reviewer discretion can influence how plans are processed, licensed professionals are obligated to comply with the rule of law, not the rule of convenience.
...DWoolley wrote: Thu May 08, 2025 10:54 am Local culture is largely the problem in many jurisdictions.
Culture is often described as the rules we follow that we don't consider rules. So what is your culture Dave? What are the "rules" that you think are right and proper that are just a product of where you live? Is it thousands of dollars for a RoS review? Is it that every RoS requires a boundary resolution note? Is it that a Basis of Bearings has to be between two found monuments shown on a recorded map? Is that every house should require a parking space per bedroom?
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Mikey Mueller, PLS 9076
Sonoma County
Boundary and Site Plans
The establishing real property boundaries on the ground is the sole domain of a land surveyor in California. No other licensed professional is authorized to establish property boundaries. Establishing a boundary requires a land surveyor to perform a thorough record search, evaluate monumentation, resolve any conflicts in the evidence, and document their findings—typically by setting monuments and/or filing a map. For a licensed surveyor, this is not optional; there is no leeway in fulfilling these legal and professional obligations.
The CBC or UBC notwithstanding, if the preparation of a site plan does not involve establishing or depicting a property boundary (your hypothetical barn in the middle of a 640 acre section), then the services of a licensed land surveyor are not required.
Professionals don’t engage in gamesmanship by omitting ties from buildings to boundary lines thinking I have avoided professional responsibility. Another common tactic—leaving off bearings and distances—is equally problematic. But ask yourself this: who, aside from trained professionals, actually knows how to read bearings and distances or even realizes they’re missing from a map? That’s the issue—the very people relying on the map often lack the expertise to recognize what’s been omitted, which is why the professional has an obligation to include it.
No Boundary, No Problem
Our project proposals typically separate the costs for boundary determination and topographic mapping, as they are distinct professional services. In most cases, the cost to establish a property boundary exceeds that of collecting topographic data. Occasionally, a client will authorize only the topographic portion of the work, and in return, that is exactly what we deliver: the topography—no boundary included.
When the client later states they “need a boundary,” my response is straightforward: “Please initial the contract for the boundary services, and we’ll get started.” As many professionals reading this will recognize, this is a common scenario.
As a workaround, I may explain that the site is on a state plane coordinate system and that they can extract a rough boundary approximation from the county’s GIS platform or possibly, Zillow. Other professionals or laypeople can donk boundaries, I cannot. I emphasize that this representation may be accurate “within a few feet (or not)”—but it is not a legal boundary and I cannot provide that for them. If that level of precision is insufficient, the next step is simple: initial the contract for boundary work, and we’ll proceed accordingly.
Why the Surveyor Can't Just "Eyeball It"
Even if the client says, “Just give me a rough sketch,” or “I’m not going to record anything,” the moment the surveyor’s name, license number, or judgment enters the conversation, their actions carry legal weight.
TL;DR: Licensed Professionals Can’t Take Shortcuts
A professional license comes with legal and ethical obligations. Just as a doctor can’t hand out prescriptions without an exam, and a lawyer can’t casually draft contracts without understanding the facts, a land surveyor can’t define or suggest a boundary without proper research, analysis, and field verification/monumentation.
Even if the client wants to "just get something on paper," the moment a licensed professional engages, they are held to a higher standard—and legally accountable for their work. Cutting corners isn't an option.
Professional licenses are not just titles—they are legally enforceable commitments to public safety, due diligence, and ethical conduct.
That is textbook, mileage may vary.
DWoolley