We get calls from excited clients who've already closed on a parcel of land in Orinda, Sunol, or the hills above Danville. They're ready to build. And then, in the due diligence process, we find a problem — a slope stability issue, an access easement that constrains the building envelope, a septic requirement that eats up half the lot, or soil conditions that will add $200,000 to the foundation. By then, the land is theirs.
We don't say this to be discouraging. We say it because it's almost entirely preventable. A builder consultation before you close can be the most valuable $2,000 you ever spend.
What We Look at When We Review a Parcel
When a client brings us a prospective lot, we look at several dimensions that real estate agents and title companies typically don't address.
Topography and Slope
Sloped lots are beautiful. They're also expensive to build on. Depending on the grade, you may need significant cut-and-fill earthwork, retaining walls, engineered foundations, or all three. We can give you a rough cost range before you're committed. A flat lot in San Ramon and a sloped lot in the Orinda hills might carry the same listing price — but the all-in construction cost could differ by half a million dollars.
Access and Infrastructure
Does the parcel have road access? Is that access paved, and who maintains it? Are utilities — water, sewer or septic, gas, electrical — available at the property line, or will you be running them from a distance? In rural areas of Sunol or Diablo, utility extensions can cost as much as the lot itself.
Soil and Geotechnical Conditions
We recommend a preliminary geotechnical report on any parcel before purchase. Expansive soils, fill areas, high groundwater, or seismic conditions affect foundation design significantly. This isn't something you want to discover after you've paid for architectural drawings.
Zoning, Setbacks, and Easements
The legal buildable area of a parcel can be very different from the gross lot size. Setbacks, easements, view corridors, creek buffers, and hillside ordinances all chip away at where you can actually place a structure. We've seen clients fall in love with a two-acre lot only to find the buildable envelope is barely large enough for the home they envisioned.
Fire Hazard and Environmental Overlays
In the East Bay hills and the areas around Sunol, fire hazard severity zones impose real constraints on materials, landscaping, and sometimes footprint. We know these requirements well and can tell you what they mean for your project before you're committed.
The Cost of Not Asking
We've worked with clients who came to us after closing on land that turned out to be functionally unbuildable for the project they'd envisioned — not because of one big problem, but because of a combination of constraints that nobody surfaced during the purchase process. In some cases, they built a scaled-down version of their vision. In others, they sold the land at a loss and started over.
None of that needed to happen.
How a Pre-Purchase Consultation Works
We offer pre-purchase site consultations for clients who are seriously considering a parcel. We review available documents, walk the site with you, and give you a frank assessment of what we see — opportunities, constraints, and cost implications. There's no pressure and no agenda other than making sure you have the information you need to make a good decision.
If you're looking at land in the Tri-Valley area, reach out before you close. It's a conversation that costs very little and can protect a very large investment.