Foundation.
Slab, post-tension, raised, and retaining systems engineered for coastal soils and hillside grades.
CSLB-Licensed · Bonded · Insured
Brief
A coastal foundation is the most consequential pour in a luxury home — corrosion-exposed, often on graded fill, and frequently within a few miles of a fault. Skyrise sequences soils, rebar, formwork, and concrete so the structure leaves day one cleared by the inspector and ready to take frame.
Scope of work
What we deliver, end to end.
Every foundation we deliver moves through the same documented sequence — soils to slab to inspection record.
- 01
Slab on grade
Vapor barrier, mesh and rebar, conditioned-pour concrete with full curing protocol.
- 02
Post-tension slabs
PTI-certified detailing, stressing logs maintained for the structural file.
- 03
Raised foundations
Stem-wall and pier systems for hillside grade with ventilation and crawl access.
- 04
Retaining walls
Engineered shotcrete and CMU with full drainage envelope and waterproofing.
- 05
Helical piers & caissons
Deep-foundation solutions for poor-bearing or fill-soil conditions, geotech-coordinated.
- 06
Drainage & waterproofing
French drains, perimeter weep, fluid-applied membrane — designed before the pour, not after.
- 01Soils reviewGeotech report, percolation, bearing capacity.
- 02Forms & rebarSized per stamped plans, third-party inspected.
- 03Pre-pour inspectionAHJ + engineer of record sign-off.
- 04Pour & cureConditioned concrete, monitored 28-day cure.
- 05Backfill & drainageWaterproofing membrane, drain rock, weep network.
- 06DocumentationAs-built plans + stress logs handed to architect.
Spec sheet
Technical specification
The same record goes to the engineer, the architect, and the AHJ inspector. You see what they see.
- Concrete
- 4,500 psi · ACI 318-19 · CBC §1905
- Rebar
- Grade 60 · ASTM A615 · CRSI 10-MSP
- Vapor barrier
- 15-mil cross-laminated · ASTM E1745 Class A
- Post-tension
- PTI DC10.5 · 270 ksi tendon
- Waterproofing
- Fluid-applied · ASTM C836
- Inspection
- Pre-pour · pour-in-progress · 7-day cure
Common questions
What we hear most about foundation.
Don’t see your question? Ask directly.
- 01
How long does a foundation take in Orange County?
Most residential pours land between four and eight weeks once permits are pulled — soils review through cured slab. Hillside or post-tension work runs longer because of the additional engineering and inspection rounds.
- 02
Do you handle the geotech and engineering coordination?
Yes. We coordinate directly with the geotech firm and the structural engineer of record. If you don't have one yet, we'll recommend two or three that we've worked clean inspections with in OC.
- 03
Can you build on a coastal hillside lot?
Most of our work is on graded or steep coastal grade. Helical piers, deep caissons, and engineered retaining systems are routine. We size the foundation to the soils report — not the other way around.
- 04
Do you pull the foundation permit?
Yes. We handle permitting with the AHJ — submittal, plan-check responses, and inspection scheduling. You stay in the loop on every status change.
- 05
What records do I get at close-out?
Full as-built plan markups, concrete mix tickets, rebar inspection sign-offs, post-tension stressing logs (if applicable), and the AHJ inspection card. The same packet goes to your architect.
- 06
How much does a residential foundation cost in Orange County?
Custom-home foundations on OC coastal and hillside lots typically run from $25 to $60 per square foot of footprint, depending on system (slab on grade vs. post-tension vs. caissons), soils conditions, and retaining requirements. We quote after a site review and a read of the soils report.
- 07
How long does a foundation pour take?
Most custom-home foundations land between three and eight weeks from excavation to inspection-cleared slab — slab on grade at the fast end, post-tension and hillside systems with retaining toward the longer end.
- 08
Do you build retaining walls and drainage as part of the foundation?
Yes. Engineered retaining walls, French drains, sub-slab drainage, and waterproofing are part of the same package — designed and built as one envelope, signed off as one inspection.
Related disciplines
We sub nothing structural.
Skyrise delivers all three structural trades in-house. Most luxury OC projects use the package — same crew, same standard, one inspection record.
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Begin
Start your foundation project.
Request a site review with the Skyrise team. Senior structural review within 48 hours.