Custom Home Foundation Contractor — Built Square, Flat, and to Your Plans
Precision Set-Up Concrete has spent over 30 years building custom home foundations in Riverside and San Diego counties. Not production tract pours on repeating plans — one-off houses on real lots, with grade change, view orientations, engineered hold-down packages, and plans that were drawn for exactly one address.
Send your plans to info@psuconcrete.com or request a free bid. Questions first? (800) 294-2207, Monday through Friday, 7:00 a.m. to 5:00 p.m.
A custom home foundation is not a tract foundation
Production foundation work is a rhythm: the same plan, the same pad, the same steel, over and over, with the layout already solved. Custom work is the opposite. Every house is a new set of dimensions, a new footing schedule, a new hold-down layout, and a pad that may or may not match what the civil drawing promised.
That difference matters because the mistakes are different. On a custom home, the errors that cost you money are layout errors, missed embeds, footings dug to the wrong schedule, and anchor bolts placed where the framer does not need them. A crew that only knows the production rhythm tends to find those problems after the concrete is hard — which is the expensive time to find them. Do you really want a contractor experimenting on your house?
What we build for custom homes
Slab on grade
Flat, one-elevation foundations with thickened footings, poured on a prepared pad. On a level lot this is usually the fastest path from permit to framing. How slab on grade foundations work →
Raised and stem wall foundations
Continuous footings with stem walls and a crawl space, for wood floor systems and for lots where the finished floor needs to sit above grade. More forming, more layout, and more places to be out of square if the crew is rushing.
Stepped foundations for sloped and view lots
The custom homes in La Cresta, Tenaja, Temecula Wine Country, Fallbrook, Bonsall, Valley Center, and Rancho Santa Fe are frequently on grade. Those foundations step down the slope in sections with deepened footings and retained edges as the engineer designed them. Foundations with walls and steps take longer than a flat slab — we schedule and bid them that way instead of pretending otherwise.
Garages, casitas, ADUs, and site concrete
Most custom homes come with a second and third pour: a detached garage or shop, a casita or ADU, equipment and generator pads, and the flatwork that ties the property together. We can carry all of it on one contract so you are not re-bidding the same site twice.
Working from your structural plans
We bid and build from the approved structural drawings and the engineer's details — footing schedule, rebar size and spacing, concrete strength, anchor bolt and hold-down locations, embeds, and any post-tension or special inspection requirements the engineer called out.
Two habits save custom clients real money:
- We read the plans before we bid them. If something on the foundation sheet will not build the way it is drawn, the time to raise it is at bid, not on pour day with a truck waiting.
- We build the specified materials. The engineer picked that rebar size and that concrete strength for a structural reason. Building inspectors rarely verify mix designs on site, which is exactly why substituting down is so tempting for contractors who bid too low. We do not.
Bid from your plans, and the only two reasons the bid changes
Custom builds are where surprise billing does the most damage, because there are so many places to hide an exclusion. We bid from your plans. The bid covers everything required to complete the foundation scope on those drawings — labor, materials, equipment, forming, steel, and the pour.
You will see a change order from us for exactly two reasons:
- You changed the work — the plan changed, the footprint changed, or you added scope.
- The grade does not match the plan — the pad we were given is not the pad the drawings assume.
No line items for the pump you assumed was included. No "that wasn't in our original proposal" after the fact.
Schedule: where the foundation sits in your build
The foundation is the first thing on site after grading and the thing every later trade is waiting on, so a slow foundation contractor costs you carrying interest on top of the trade delays.
A typical sequence on a custom home: rough grade and pad certification → foundation layout → trench and excavate footings → set forms → place rebar, anchor bolts, and hold-downs → underground plumbing and electrical coordinated in → pre-pour inspection → pour → cure → strip forms and clean up → framer starts.
Flat slab on grade foundations should move quickly. Fifteen working days, weather permitting, is the internal benchmark we measure a no-step, no-wall slab against — a benchmark, not a promise. Foundations with walls and steps take longer, in proportion to how complex they actually are. Require any foundation contractor you are considering to commit to a timeline in writing.
Who we work with
Custom home builders, general contractors, owner-builders, architects, and structural engineers who want the foundation built to their detail instead of to somebody's habit. Send the plans — we bid from the drawings and will tell you plainly whether the job is a fit. No hard owner-builder restrictions are published on this page. Our management team brings 100+ years of combined experience and deep custom-foundation work in Riverside and San Diego counties.
Read the 7 steps to a foundation that a concrete contractor would build his own home on before you sign with anyone, including us. It is the same checklist we would use.
Custom home foundations across Riverside and San Diego counties
We build custom home foundations in Temecula, Temecula Wine Country, Murrieta, La Cresta, Tenaja, Wildomar, Menifee, Winchester, French Valley, Lake Elsinore, Hemet, Corona, Riverside, Fallbrook, Bonsall, Pala, Valley Center, Rancho Santa Fe, Escondido, San Marcos, Vista, Carlsbad, and Oceanside.
Questions custom home clients ask
Can you bid from plans before the pad is graded? Yes. We take the foundation off the structural drawings. The bid assumes the pad will be delivered at the grade the plans show, which is why a grade that does not match is one of the two things that can change the bid.
Do you do the grading too, or only the concrete? The bid assumes the pad is delivered at the grade shown on the plans. If the grade does not match the plan, that is one of the two reasons the bid changes. We do not claim to self-perform grading.
Will you coordinate with our framer and plumber? Yes — underground plumbing and electrical, anchor and hold-down layout from the framing plan, and pour timing all get coordinated before we form.
What if the engineer revises the plans mid-job? A revision is a change to the work, so it gets priced as a change order — with the number in front of you before we build it, not after.
Do you build foundations for detached ADUs and casitas on the same contract? Yes, and it is usually simpler to do them in the same mobilization than to bring a crew back later.
Send us your plans
Bid from your plans. Built square, flat, and to the drawings.
Call (800) 294-2207 · info@psuconcrete.com · Monday–Friday, 7:00 a.m.–5:00 p.m. Request a Free Bid · Precision Set-Up Concrete · (800) 294-2207 · psuconcrete.com · CA License #963015 (C-8)