Foundation installation in Hilo HI - a solid base for your house, planned before the pour

What does foundation installation in Hilo involve?
At Mainstay Hilo Concrete Construction, foundation installation in Hilo is usually one of two jobs. We pour the concrete base for a new house, or we strengthen an older home on posts and piers with shear walls, short concrete walls built between the piers with steel rebar and anchor bolts set in them.
Plenty of older homes around Hilo sit on posts and piers, and a house on that kind of older foundation can be badly damaged in a large earthquake. A photo from the 1983 quake shows a house knocked completely off its piers. That's the risk worth weighing when you decide what work your house needs.
The Hilo soil type is deep, well-drained ground formed from weathered volcanic ash, and its area gets about 145 inches of rain a year. That describes the soil type, not your lot, so we look at your own ground and where the water runs before we plan a foundation in Hilo, Hawaiian Paradise Park or a city nearby.
I come out myself to look at the house and write the estimate, which shows what's included and what isn't, and I'm on site with the crew when we build it. We also pour concrete footings for posts, decks and additions, and handle concrete parking lot building for rentals and small businesses that need parking along with the building.
What goes into it
- A look under and around the house
- Engineer's plans for retrofit work
- Digging out and packing the base
- Forms, rebar and anchor bolts
- Drainage that runs away from the house
- Termite protection planned before forms
What to weigh before foundation installation
What drives the price
The price follows how much foundation your house needs, a full base for a new home or a few sections of wall, plus the digging and site access.
What sets the schedule
On a retrofit, the engineer's plans come first. After that, rain decides pour days, and the concrete needs time to cure, gaining strength slowly, before it carries the house.
Spend on the base first
If the budget gets tight, cut somewhere other than the base, because the packed ground under the concrete is buried on day one and it's what keeps a foundation from settling.
Foundation questions from Hilo homeowners
Do shear walls need to go around the whole house?
No, shear walls can be built as set sections, with a wall on each end and each side of the house, rather than around the whole perimeter. That keeps the digging and concrete to those sections, and on older post-and-pier homes we often bring in a structural engineer first and talk through with you which sections need walls.
Who should design a foundation retrofit in Hawaii?
A licensed structural engineer or architect, because a state homeowner's guide advises consulting one when a house is being retrofitted, even if the owner does some of the work. If you plan to handle part of the job yourself, bring that expert in before you start, and if you already have plans, have them ready when you call.
How much does a new foundation cost in Hawaii?
A new-construction foundation pour for a typical full 2,000-square-foot house in Hawaii usually costs about $20,000 to $48,000 for the job. That's the going range statewide, not our price, and it's for a new house, not for adding shear walls under an older one. Your written estimate gives your own figure, and our work is satisfaction guaranteed.
Which contractor license covers foundation work in Hawaii?
The state's contractor license classes include a C-35 class for pile driving, pile and caisson drilling, and foundation work. State rules leave foundations and load-bearing parts out of some classes, so ask any contractor which class they hold and check it against the state's list of license classes. We're licensed and insured, and if you'd rather run the job yourself, a state rule lets an owner-builder act as their own general contractor after registering for an exemption with the County Building Permit department, which can tell you its current steps.
How do I protect a new foundation from termites in Hilo?
Plan it before the foundation goes in, because physical barriers that keep termites out fit best when they're part of the plan for a new house. One kind, particle barriers, can be hard to install in some situations or without proper training, so ask whoever puts one in about their training. On a new home we go over termite protection with you before the forms go up.
What is the best way to get my house ready for a foundation retrofit?
Clear what you can from around and under the house, because we take the lattice off the work area and dig out the soil before the pour, going less deep where we hit solid rock. Move anything stored under the house, and keep cars and pets out of the side yards while we work.
Foundation installation near you
We're based in Hilo and build foundations in Hilo, Hawaiian Paradise Park and other cities nearby. Pick your area below, or call (808) 229-1132 if yours isn't listed.
Other concrete work
- Concrete driveway building
- Concrete patio construction
- Stamped concrete services
- Concrete sidewalk building
- Garage floor concrete
- Decorative concrete
- Concrete retaining walls
- Concrete floor installation
- Concrete pool decks
- Concrete steps construction
- Slab foundation building
- Concrete parking lot building
- Concrete footings
- Foundation raising
- Concrete cutting
Ask for a free foundation estimate
Tell us your foundation type, the home's age and any engineer's plans. We reply within one business day, then I come out for a free, no-obligation on-site estimate.
