Huntington Beach Topographic Survey

When Your Project Needs One

If you're hiring an engineer or architect for work on your lot, they need an existing-conditions map before they can draw anything — an addition, a detached structure, a regrade, a drainage fix, all of it has to sit on real elevations, not a guess.

Building permits lean on the same map. The city checks existing grade against proposed grade, and both come off our numbers. We've seen clients try to skip this step and hand a designer a sketch — it doesn't survive plan check. Get the survey first and the design and permit process both move faster.

What Ends Up on the Map

Four things go on every map: trees, structures, drainage, and utilities — located by position and elevation, not sketched from memory. Trees because canopy shapes what can get built where. Structures because the map shows what's actually standing, not what an old plan claims. Drainage and utilities because water and lines are already routed across your lot, and the design has to work with that or around it on purpose.

The map almost always turns up something nobody expected — a drainage path running somewhere other than assumed, a canopy reaching further than it looks from the patio. Catching that on paper now is a lot cheaper than catching it mid-construction.

How We Shoot the Lot

Open ground is the fast part. We run GNSS RTK rovers that read satellites and capture elevations and feature positions across open yard with tight accuracy. Then we hit the trees. Canopy kills the satellite signal — same reason your phone's GPS wanders under heavy shade — so wherever the rover won't hold, we switch to a robotic total station, which measures optically from an established point instead of the sky.

The two instruments cover each other: rovers for speed across open ground, total station for the shaded, complicated corners GPS can't reach. Most residential lots need both, which is why we carry them on the truck. Our weather here doesn't put much of a dent in scheduling either — January lows average 47°F, July highs 76.9°F, about a 30-degree swing over the year, mild enough that we're not working around extreme heat or freeze windows.

What It Costs

For a residential lot, we run $700 to $1800. Where you land in that range comes down to size, ground cover, and feature count. More ground means more shots. An open lot moves fast on the rover; a lot under mature canopy means slower, more exacting total-station work. And every structure, tree, drainage line, and utility we locate adds time on site.

A small, open lot with a house and a patio sits toward the low end. A big, treed lot with several structures sits toward the high end. We'll tell you where your job falls in that range before we start, so there's no surprise on the invoice. If you're comparing quotes, make sure they cover the same scope — a cheap bid that skips half the features isn't cheap, it's a map your designer sends back.

Getting the Map to Your Designer — and the City

We hand the existing-conditions map straight to your engineer or architect — you're not shuttling paper between us. When the permit submittal goes together, existing and proposed grades both trace back to our shots, so errors here don't stay small. They surface later as plan corrections and resubmittals, which is the most expensive place to catch them.

That's why we spend the extra time on the unglamorous details — the drainage line, the canopy edge, the utility nobody had on file. One accurate survey and everything after it, design, permits, construction, starts from solid ground.