A due diligence survey helps you check what a piece of land really holds before big land-use choices get locked in. When a rezoning request is on the table, the survey work should start with good questions, not guesses. The goal is a clear view of the site today, so the plan rests on facts.

Roseville gives a live example. The city has a proposed project at 6382 Phillip Road, in the northwest corner of town. The request bundles a rezone with a General Plan amendment and several other approvals. The project is still going through environmental review, and the city hasn’t approved it. It works as a plain reminder that a rezone rarely stands alone, and that site facts should be checked before land-use ideas harden into a project plan.

Ask What Decision Is Actually Being Requested

Start by asking what the applicant is really requesting. A rezone is often one piece of a larger set of approvals. Each added request can change what site facts your team needs to gather. Naming the full ask first keeps the survey scope on track.

Rezoning changes the zoning rules for a site. But many projects ask for more at the same time. The proposal may also include a General Plan amendment, a subdivision map, a development agreement, a permit or a future land dedication. The Phillip Road request in Roseville shows this pattern. It pairs a rezone with a General Plan amendment, a subdivision map, a tree permit, a development agreement and staged project permits. In California, a city’s zoning has to match its General Plan. That’s one reason a rezone and a General Plan amendment often travel together.

Each added request pulls on the survey in its own way. A subdivision map calls for firm boundary and area figures. A dedication may hand part of the land to the public. A development agreement can set terms that ride with the land for years. So the first question is simple. What exactly will the city decide, and which parts touch the ground itself?

Compare the Application Exhibit With the Ground as It Exists Today

Next, hold the application drawing up against the real site. A conceptual land-use exhibit shows an idea, not a survey. Small gaps between the drawing and the ground can shift acreage, access and layout math. Catching those gaps early keeps the decision based on real conditions.

A land-use exhibit is a planning graphic. It may round the shape, blur the edges or leave out features that sit on the land right now. A due diligence survey review checks the drawing against what a survey and a site visit find.

Ask these questions as you compare the two:

• Does the project area on the exhibit match the parcel under review?
• Are the nearby streets and access points drawn where they really sit?
• Do visible features, like fences, poles or drainage lines, show up correctly?
• Are current uses on and around the site shown the right way?

The Phillip Road site is a good case in point. Pleasant Grove Creek runs across the property and splits it into two parts. A creek like that shapes where building can happen, no matter what the zoning allows. This step isn’t about guessing whether a project wins approval. It’s about making sure the choice rests on a current view of the land.

Identify the Rights That Could Outlast a Zoning Change

A rezone can widen what a site may be used for. It does not erase private or public rights already recorded against the land. Recorded easements, access rights and utility corridors can stay in force. Review them next to the survey so they don’t surprise the team later.

Zoning and property rights are two different things. A new zoning label may allow taller buildings or new uses. But a recorded easement still gives someone the right to cross, drain or run lines through part of the site. Those rights sit in the title record, and a rezone does not lift them.

So the survey review should pull the title exceptions and lay them over the map. Ask where each easement falls. Ask if a utility corridor cuts through a spot the plan wants to build on. Ask whether the site can still be reached the way the plan assumes. A rezone may open new uses on paper. It can’t move a right that another party already holds.

Ask Whether Future Public Improvements Touch the Site

Public projects can reach onto private land. Ask whether planned street work, road widening, walkways, utility lines or required dedications land on or near the site. Confirm where each one falls before you trust early acreage or layout numbers. A few feet can change a plan.

Cities often plan frontage work along the edges of a growing area. A road may get wider. A new sidewalk or trail may run along the property line. A utility line may need room to pass through. Some approvals also require the owner to give up a strip of land for public use, called a dedication.

Each of these can trim the usable part of a site. If the plan counts on the full parcel, and the city later takes a strip for a wider road, the layout may no longer work. The survey review should map where these items are expected to land. That way the team plans around real edges, not hopeful ones.

Create a Survey Baseline That Can Be Reused Through Entitlements

Build one clear survey baseline early and reuse it. Set firm survey control, list the mapping dates, define the coordinate system and write down the scope. Everyone from the owner to the planner and engineer can then work from the same reference as the proposal moves and changes.

Entitlement review can take months or longer. Plans get revised. New studies come in. Without a shared reference, each team member may measure from a slightly different starting point, and the numbers drift.

A solid baseline fixes that. Clear survey control gives set points on the ground to measure from. Dated mapping shows how current the data is. A defined coordinate system lets every drawing line up. A written scope says what the survey did and did not cover. As the rezone request moves through review, that same baseline carries forward. The owner, planner, engineer and later design team all read from one page.