For tough lots
The ADU builder for lots Abodu turns down.
Sloped grades. Narrow side yards. Protected trees. No crane access. If a prefab salesperson has already told you your lot doesn't work, that's the lot we're built for.
Why crane-in prefabs can't do your lot
Abodu, Villa, and the other crane-in prefab companies deliver the ADU as a single fully-finished box, on a flatbed trailer, that a crane sets in one lift. Beautiful when it works, but it requires:
- A wide side yard or driveway (usually 12+ feet clear) for the trailer to reach the drop zone
- Direct crane sightline to the pad, with no protected trees or power lines in the arc
- A mostly flat pad, sloped lots need engineered fills or terracing they don't build
- A neighbor willing to have a 90-ton crane in front of their house for a day
A lot that fails any one of those gets a polite "we can't help you" email. That's most Los Altos Hills lots, most Woodside lots, half of Portola Valley, and plenty of older Palo Alto and Los Altos parcels with 60-year-old oaks in the wrong place.
How SHAPE does it instead
Our modular system ships in sections small enough to be carried in through a standard side yard or driveway and assembled on-site. That single change opens up lots the crane-in companies can't serve.
- Sloped lots, stepped stem-wall foundations, drilled piers, or caissons designed by our structural engineer to the soils report. We regularly build on 15–25% grades.
- Tight access, sections fit through 10-foot access. On truly landlocked backyards we've hand-carried framed panels through the main house's side path.
- Protected trees, we design around the drip lines from day one and coordinate with the city arborist. No 90-ton crane rolling over root zones.
- Geotech-sensitive sites. Los Altos Hills LUF limits, Woodside expansive soils, Portola Valley fault-zone setbacks. All handled in the design package before permit.
Where we do this most
Some of our favorite projects have been on the exact lots other builders declined:
- Los Altos Hills, hillside estates with one-acre minimums and strict LUF caps
- Woodside, wooded, well-and-septic properties along Kings Mountain and Cañada
- Portola Valley. Alpine and Ladera lots with slope, trees, and geologic overlays
- Hillsborough, the estate blocks with mature landscaping and elevated pads
- Palo Alto, older Professorville and Crescent Park lots with protected oaks in the arc a crane would need
Frequently asked
- How much more does a hillside ADU cost than a flat-lot one?
- Hillside and tight-access ADUs typically run $400,000–$750,000 all-in. The final price depends on slope, access, soils, foundation engineering, grading, retaining work, utilities, size, and finishes. We quote it fixed after a site walk and soils review so there are no surprises mid-build.
- How steep can you go?
- Up to about a 25% grade with our standard foundation approaches. Steeper is possible with caissons or a full pier-and-grade-beam system, we engineer to whatever the geotech says the site needs.
- What's the minimum access width you need?
- About 10 feet of clear access to the build area works comfortably. For truly landlocked backyards we've delivered panelized sections through the main house's side gate, talk to us with photos and we'll tell you what's possible.
- Do protected trees stop the project?
- Rarely. We design around the tree's drip line, get the city arborist involved early, and use pier foundations that don't disturb root zones. Losing a protected oak to a preventable design decision is not something we'll do.
- How long does a hillside build take?
- Usually 2–4 months from permit, similar to a flat lot. Any extra grading or retaining is absorbed because site work runs in parallel with factory fabrication.
Send us the lot everyone else passed on.
A free 30-minute call. Show us the slope, the access, the trees. We'll tell you honestly whether it works, and if it does, come back with a fixed all-in price.
