Building Concrete Foundations That Last in Portland
A foundation is the anchor for everything built on top. We install footings and walls for new homes and additions across Portland, following the structural engineer's specifications, reinforced correctly, and inspected before each concrete pour. Our crew handles the full sequence from excavation through waterproofing. Start with a free written estimate.
The foundation is the one element that cannot be repaired without major cost and disruption. It must be sized for the soil bearing capacity, reinforced for the structural loads, formed straight and true, poured without voids, and cured before any weight goes on it. A shortcut taken during installation becomes a structural problem that surfaces years later.
We follow the engineer's drawings exactly. Footings are excavated to the specified depth, the bearing soil is verified, walls are formed and reinforced to drawing, embeds for utilities are placed before the pour, and every stage is inspected before concrete arrives. If the project includes a basement floor, the foundation sets the stage for that work too.
When an addition ties into an existing house, the detailing is critical. The new foundation must bond or isolate from the existing footing as the engineer specifies, so both structures settle together without separation. We apply the same rigor to all our foundation work and the broader residential concrete we deliver.
Recent work
The sequence
Steps to Pour a New Foundation in Portland
Layout and excavation
We stake the footing and wall positions from the engineer's drawings, excavate to the specified depth, confirm the bearing soil, and correct any over-dig before forming starts.
Form and reinforce
Footings are formed and rebar is tied to drawing. Walls are formed straight, rebar is placed through the height, and all embeds for plumbing and electrical are set in position.
Pour and consolidate
Concrete is placed and worked to remove air pockets. The pour is finished level and the concrete is left to cure on the engineer's schedule before forms are stripped.
Waterproof and backfill
Foundation waterproofing is applied to the exterior wall and weeping tile is installed at the footing before backfill goes in, protecting the structure from groundwater.
Protection built in
Waterproofing and Drainage Finish the Foundation
A new foundation is not complete until the exterior is sealed and drainage is in place. Foundation waterproofing applied before backfill keeps groundwater out, and weeping tile at the footing level channels water away from the structure.
Omit these steps and a new foundation can leak within the first wet season. Done during installation, they protect the slab and basement for decades. The same principle applies to any basement floor poured inside the foundation walls.
Drawings, footings, additions and waterproofing handoff for new foundations in Portland.
Yes. Every new foundation install is built to the structural engineer's drawings, footing sizes, wall thicknesses, rebar layouts, mix designs, and is ready for inspection at each stage before concrete is ordered or backfill goes in.
Yes. Additions usually require the new foundation to tie in or isolate from the existing footing per the engineer's design, so the new structure settles with the house rather than against it. We pour to that detail.
Below the frost line, which is typically several feet in Portland, and confirmed against the engineer's geotechnical info. The exact depth depends on the soil, the load and the local code requirements; the drawings specify it.
Yes, as part of installation. Foundation waterproofing and weeping tile go on before backfill, protecting the new structure from groundwater for the long haul.
It depends on the size, the soil, the engineering and access. We put exact numbers in a written, itemised quote after reviewing the drawings and walking the site, so the price is firm against the actual project.
Homeowner reviews
What Portland Homeowners Say About Their New Foundations
Foundation for a full custom build, footings and walls to the engineer's drawings, inspected at every stage. Project went smooth and the structure has not moved through the first winter.
H. T.
Portland
★★★★★
Addition foundation tied into the existing house exactly as the engineer specified. New and old settled together, no separation at the join.
I. L.
Gresham
★★★★★
Below frost depth, properly reinforced, with the waterproofing on before backfill. They explained every step before pouring.
D. X.
Beaverton
★★★★★
Embeds for plumbing and electrical placed exactly where the trades needed them. Made the rest of the build smooth and avoided drilling into a new foundation.
A. L.
Hillsboro
From the blog
Concrete Guides & Articles
Practical reading on planning, finishes and caring for concrete in Portland.
Share the engineer's drawings or describe your project, and we will provide a detailed estimate for the foundation install, waterproofing, and timeline aligned with your build schedule.
