Clear routes, defined edges, manageable grades and reachable outdoor power.
Roots, holes, mixed tree cover, separated zones or an edge that can be protected.
Unprotected drops, inaccessible grass, very tight routes or terrain beyond model limits.
Measure the grass—not the property
Start with the actual mowable area. Add front, rear and side lawns, then subtract the house, driveway, pool, patios and garden beds. Choose a mower with coverage above that result rather than buying at the exact published limit.
Use our mowable lawn calculator →
Walk the route the mower must travel
The average lawn is less important than its hardest recurring section. Measure the steepest grade, inspect turns on slopes and note roots, holes, soft soil and abrupt transitions. AWD can help with traction, but it cannot correct an unsafe drop or terrain outside the manufacturer's limit.
The right mower is selected by the hardest part of the route—not the easiest stretch of grass.
Trees change the navigation choice
Open lawns are usually friendly to RTK/GPS positioning. Dense canopy and tall buildings can weaken satellite correction, so a vision- or LiDAR-led mower—or a hybrid that can use several sensors—may be a safer starting point.
Measure gates, corridors and zone connections
A mower must physically fit with room to navigate, not merely squeeze through once. Measure gates, side-yard passages and the route from every zone back to the charger. Check the exact model's minimum passage requirement.
Make dangerous edges unambiguous
| Edge condition | What to do before autonomous mowing |
|---|---|
| Pool or pond | Use a physical barrier or manufacturer-approved setback; do not rely only on mapping. |
| Retaining wall or drop | Create a firm protected edge and verify anti-fall guidance for the exact mower. |
| Public sidewalk or road | Prevent the mower from leaving private property with a reliable boundary and margin. |
| Flush patio or driveway | Confirm wheel clearance and how the mower handles the transition. |
Plan the charging station before buying
Look for level, well-drained ground with suitable outdoor power and enough clear approach space. Consider Wi-Fi or cellular coverage, theft exposure and whether the route home remains usable after rain. “Wire-free” removes a perimeter cable; it does not remove the charger, mapping or site preparation.
When a robot mower may not be the answer
Pause if essential areas can only be reached by stairs, the lawn contains unprotected water or drops, the required passages are narrower than available models, or the terrain exceeds published limits.
Find the navigation type that fits
Add your lawn size, tree cover, slopes and layout to get a starting recommendation.
Use the mower finder →This checker provides general planning guidance and does not inspect your property or certify it as safe. Always follow the exact mower's manual and operating limits. Keep children and animals away from an operating mower and use physical protection around water, drops and public areas.