Built for people building a home
Groundbase helps you answer the hard questions: should you sell, how much can you afford, where does the money come from, and what happens when costs change mid-build.
7 days free, then $9.99/month. One plan, everything included.
Groundbase draw interest card
Draw interest
What rate
Total interest
Draws active
Monthly interest by draw
What Groundbase changes
Budget
Set a number that holds as things change
Start with the build cost, then track contingency, site work, soft costs, and real spend — without restarting the math every month.
Funding
See all your funding sources in one place
Home equity, sale proceeds, cash, reserves, and your construction loan — in one picture instead of four separate conversations.
Tracking
Keep costs connected while the build runs
Draws, vendor costs, and scope changes stay tied to the budget — so nothing gets lost between your lender and your spreadsheet.
Affordability
Know what the finished home actually costs to live in
The home only works if the permanent payment, DTI, and what comes next still fit your real life when the build is done.
What you are really managing
Most people are forced to manage those as separate conversations. That is exactly how the project can keep moving while the financial picture quietly gets worse.
Before the build
You are deciding scope, loan size, cash use, and whether to sell your current home before the finished payment is fully clear.
During the build
Your builder tracks scope, your lender tracks draws, and your spreadsheet tries to hold the rest. That is where expensive blind spots appear.
After the build
The build is not really working if the reserve disappears, the payment stretches too far, or the finished-home DTI stops feeling manageable.
Who Groundbase is for
Groundbase is for people who do not just want a rough estimate. They want a calmer, clearer way to understand what the build is costing, where the money is coming from, and whether the finished home will still feel okay to live with.
You are the point person
Your builder has one view, your lender has another, and you are the person trying to keep budget, cash, timing, and decisions from drifting apart.
You want fewer surprises
How much comes from the loan? How much comes from cash? What happens if the sale comes in low or costs go up? You want those answers early, not halfway through the build.
You still have a real life
Getting the build done is not the only goal. You also want to know the payment, reserve, and monthly reality will still feel comfortable when construction is over.
Where the plan gets tested
Move the sliders. This is the kind of chain reaction Groundbase is built to catch before it gets expensive.
Funding gap
$62,000
The gap has to come from more cash, more debt, or less project.
Reserve after change
$29,000
This is where "still possible" turns into "now we have to react."
Finished payment
$4,650/mo
The home is not affordable just because the build kept moving.
Finished-home DTI
33.4%
ComfortableThis number changes when everything else does.
What Groundbase does next
It shows you the impact right away — and gives you time to choose: cut scope, find more cash, adjust the timeline, or change your plan for the current home.
From owner-builders
Not because the build gets simple, but because the numbers finally start making sense in one place.
Featured story
It made me feel like a competent adult managing a major project. I went into every meeting with my GC and lender actually knowing where we stood instead of hoping I hadn't missed something.
Priya S.
First-time owner-builder, Georgia
Building a house is the biggest financial thing we've ever done. For the first time I actually felt like I understood where our money was going. I stopped dreading the budget conversations with my husband.
Carrie M.
Owner-builder, Tennessee
I had four different spreadsheets open at all times and still felt completely lost. Groundbase was the first time everything was in one place and just made sense. I don't know how I was managing before it.
Doug R.
Building in Colorado
Try it yourself
Each answer changes the others — and that's where most owner-builders get caught off guard.
Build cost calculator
A fast way to size the project before funding, draws, and real-life tradeoffs start to reshape it.
Core assumptions
Set the size, pricing, and contingency first.
Estimated total project cost
$660,000
This is the number to respect before financing, bids, and change orders start testing it.
Base construction
$600,000
2400 sq ft at $250 per square foot.
Contingency reserve
$60,000
10% protection for the part of the budget most likely to move.
What this cannot tell you
Beyond the estimate
This number alone does not answer whether your reserve survives, your home sale fills the gap, or the finished payment still works.
Use this number well
Treat this as the opening range. If it changes scope or funding decisions, that is the calculator doing its job.
Common questions
Straight answers about what Groundbase is, who it's for, and how it works before you sign up.
Simple pricing
Budget planning, funding visibility, draw tracking, vendors, project health, and finished-home affordability in one place.
7 days free, then $9.99/month.
Included
Everything in one plan