The Basement Types We Design Most
Which basement is right depends almost entirely on your lot. These are the configurations we tailor to each site.
A below-grade level under the whole footprint — the classic cold-climate choice that puts mechanicals, storage and bonus living space out of sight on a flat lot.
On a sloped lot, one side opens at grade with full-height doors and windows. It gains a private entrance and real light, making it the best value for finished living space.
A partial grade change lets you put full windows on one or two sides — bright enough for bedrooms and a family room without a full walkout.
A walkout or daylight basement with a private grade-level entry makes an ideal, high-privacy in-law or rental suite for a fraction of an addition's cost.
We rough in the plumbing, egress windows and ceiling height so you can finish the basement yourself down the road without tearing anything out.
In tornado and severe-weather regions, a basement doubles as a shelter — we can plan a reinforced safe zone into the design.
Interactive estimate
What will a home with a basement cost to build?
Drag to your target size for a live 2026 build-cost range. Then get an exact, state-adjusted number — or start a custom plan drawn around it.
Typical a home with a basement range: $150–$250/sq ft (materials + labor, 2026)
Estimated build cost
$390,000 – $650,000
Midpoint ≈ $520,000
Estimate only. Site, finishes and region shift the total — a full report or custom plan pins it down.
Drawn for your soil and slope
Send us your lot — we design the right basement for it
Slope, water table and frost depth drive the foundation. Your designer matches the basement type to your site and delivers a complete permit-ready set.
What Makes a Basement Right
Get these right at the design stage and you avoid the most expensive fixes in home building.
The number-one basement regret is water. We plan grading, drainage, waterproofing and sump strategy around your site's water table — it's far cheaper to design in than to chase later.
Any basement bedroom legally needs an egress window or door. Designing egress and daylight in from the start turns a dark cellar into livable space.
Nine-foot basement walls cost little more than eight and completely change how finished the space feels. We size it for how you plan to use it.
Builders often see a sloped lot as a problem. Designed right, that slope is exactly what gives you a walkout with a private entrance and real windows.
Why a custom foundation beats a stock plan
Stock plans come with one generic foundation option. But a basement is the one part of the house most dependent on your specific lot — its slope, soil, and water table. Using the wrong foundation is how basements crack, leak, and blow budgets.
Drawing it custom means the basement type, waterproofing and egress are designed for your site from the start. That's the difference between a dry, bright lower level and an expensive problem.
Designed for your lot
Tell us about your slope and site. We match the basement type and foundation to it and deliver a complete plan set.
Start My Design →Estimate your build cost
Get a 14-category, state-adjusted cost report including your foundation and basement — before you hire anyone.
Get Cost Report →Know your cost per square foot
Basement space typically costs about half of above-grade space — but finishing, waterproofing and a walkout all shift the number, and it varies widely by state.
Run a state-adjusted estimate for your total square footage so you know what the basement really adds before you commit.
Recommended Tools and Reports
Custom House Plan
A designer turns your style, size and must-have rooms into a complete plan set — from $899.
Design My Plan →Frequently Asked Questions
Is a walkout or full basement better?
It depends on your lot. A flat lot suits a full basement; a sloped lot is ideal for a walkout, which gains a private grade-level entrance and full windows — usually the best value for finished living space. We design to your actual site.
How much does a basement add to the cost?
Basement square footage typically costs roughly half of above-grade space, but finishing, waterproofing and a walkout entrance raise it. Use the cost estimator here for a state-adjusted ballpark, then get a full report for exact numbers.
Can a basement bedroom be legal?
Yes, as long as it has a compliant egress window or door and proper ceiling height. We design egress in from the start so basement bedrooms and suites meet code.
What if my lot has a high water table?
We plan grading, drainage, waterproofing and sump strategy for your conditions. On very high-water sites we may recommend a daylight or slab-on-grade alternative — the goal is a dry, usable lower level.
How long does a custom plan take?
Your complete custom plan set is delivered in about 7–11 business days, with a designer confirming your brief within one business day of checkout.
Related House Plan Collections
Custom plans from $899 · 7–11 day delivery
Design a Home That Fits You — Not the Other Way Around
Tell us your style, size, rooms and lot. A real designer prepares your complete, print-ready plan set — made only for you.