A common story on design projects: the survey arrives, the engineer opens it, and something’s missing. The area stops short of the road. The contours are too coarse for the drainage design. The file is in a format nobody can use.

None of that is the surveyor’s fault if nobody said what was needed. This engineering survey scope checklist covers what to settle before you order, so the data fits your design on the first delivery.

1. The area, not just the address

An address tells us where the property is. It doesn’t tell us how far the design reaches. Decide whether you need the lot only, or also the adjacent road, boulevard, ditches, and neighbouring features that affect grading and drainage. Marking the area on a drawing or sketch removes the guesswork.

2. What the survey needs to capture

Different designs need different information. Say which of these matter for your project:

• Ground elevations and grading
• Buildings, pavements, curbs and retaining walls
• Trees, with sizes if they affect the design
• Visible utility features such as manholes, catch basins and hydrants
• Watercourses, swales and drainage paths

Buried lines can’t be seen from the surface and generally need separate locates, so mention if underground services matter to your design.

3. How detailed the elevations need to be

A road design and a small building addition don’t need the same elevation detail. Tell the surveyor the level of detail your engineer works to. If you don’t know, ask the engineer before you order. A dense survey costs more than you need, and a sparse one costs you a second trip.

4. Coordinate system and elevation reference

This one causes more rework than any other. Ask your engineer which horizontal coordinate system and which elevation reference the design drawings use, and confirm the survey will match. A survey that doesn’t line up with the design files has to be converted, and that’s where errors creep in.

5. File formats and deliverables

Agree up front on what you’ll receive. Common choices:

6. Timing and updates

Design teams often work to submission dates. Share yours, and say whether the survey is a one-time snapshot or whether you’ll need updates as the project moves along.

What to send your surveyor

A short package saves days:

• The site address and a marked-up sketch of the area
• Any existing survey, plans or drawings
• The name of the engineer and the format they need
• Your deadline

Where this fits

This checklist applies to projects served by our engineering survey service. If your main need is a picture of the existing ground and features, our topographic survey page explains that deliverable.

Have drawings ready? Send us the site address and the design area through our contact us, or call 647-914-3361, and we’ll confirm what the survey should cover.