Here is the honest breakdown: a North Texas custom home budget splits into five lines, land, design and permitting, site work, construction, and finishes, and on most of the custom luxury homes we build at $1.2M to $4M+, construction and finishes together eat 70 to 85 percent of the house budget. Land and site work are the wildcards, because they depend entirely on what you are building on. I walk every client through this breakdown before we draw a single wall, because a quote that hides which line is which is a quote you cannot trust.
What Are the Five Lines in a Custom Home Budget?
In order of when the money gets spent:
- Land. What you paid or are paying for the lot or acreage. Not part of the construction budget, but it shapes everything downstream.
- Design and permitting. Architectural drawings, structural engineering, and county or city permitting. Budget 3-6 months here before construction starts.
- Site work. Well, septic, driveway, grading, utility runs, and foundation prep. This is the line that varies the most.
- Construction. The shell, framing, roof, mechanical systems (HVAC, plumbing, electrical), and labor to assemble the house.
- Finishes. Cabinets, countertops, flooring, tile, lighting, plumbing fixtures, and millwork, the layer clients actually touch and see every day.
A sixth item belongs on every honest budget too: contingency. Even on a well-planned project, a line for the unexpected, a rock ledge the excavator did not expect, a selection upgrade mid-build, keeps a surprise from turning into a fight. I build it into every contract rather than pretending it will not be needed.
How Much Does Land Cost in North Texas?
This is the one line I cannot give you a percentage for, because it depends entirely on where you are buying. A half-acre lot inside Weatherford city limits with municipal water prices nothing like twenty raw acres outside Brock or Springtown that need a well drilled and a septic system engineered before you can even apply for a building permit. If you are still shopping for acreage, the Parker County Appraisal District is a good place to check actual land valuations and tax history before you make an offer, not just the listing price.
What Do Design and Permitting Actually Cost?
Design and permitting typically run a modest single-digit percentage of the total construction budget, but it is money and time spent before you see a single stud go up. Expect 3-6 months for architectural drawings, structural engineering (especially on Parker County's expansive clay soil), and permit approval, whether you are inside a city or in unincorporated county land. This phase is where a floor plan decision like roofline complexity or ceiling height gets locked in, and those decisions move your construction cost far more than most buyers expect. I cover how those decisions ripple through pricing in my post on cost per square foot in Parker County.
How Much Goes to Site Work?
Site work is the line that separates an easy budget from a complicated one, and it is almost entirely about where you are building:
| Site condition | What's typically needed | Rough share of total budget |
|---|---|---|
| Serviced in-town lot (municipal water, sewer, electric at the street) | Utility connections, standard grading | Low single digits |
| Raw acreage with power nearby | Well, septic system, driveway, electrical run | Mid-to-high single digits, often more |
| Remote acreage or difficult terrain | Longer well, extensive septic engineering, long driveway, heavy grading or clearing | Can reach into six figures on its own |
I wrote a full walkthrough of this exact problem in building on acreage in Springtown. The short version: never let a builder hand you a per-square-foot number without telling you what, if anything, it assumes about your site.
What Portion of the Budget Is Construction?
Construction, meaning the shell, structural framing, roof system, and the big three mechanical trades (HVAC, plumbing, electrical), is usually the largest single line in the house budget. It is pure structure and labor, and it is also the hardest for a buyer to evaluate by eye, since most of it ends up behind drywall. This is exactly why an owner on the job site matters. I am on every one of our builds personally, not rotating between a dozen projects, because the structural decisions made in weeks three through twelve are the ones nobody gets to inspect again once the walls close up.
If you are weighing whether a real basement fits your project, know that it adds its own line here, typically $150 to $350 per square foot on top of the base home, a topic I cover in full in how much a basement costs in North Texas. I learned to build basements the right way in Colorado, and it shows in how we price and waterproof them for Parker County clay.
The mechanical trades inside this line deserve their own mention, because they are the part buyers see the least and underestimate the most. HVAC sized for North Texas summers, plumbing runs to every bath and the outdoor kitchen, and an electrical panel built for a home theater, a shop, and future solar, all of it gets decided and priced during construction even though none of it is visible in a finished photo. A 12-14 month build timeline exists partly because these systems need to go in correctly and get inspected in sequence, not rushed to hit a move-in date.
How Much Should You Budget for Finishes?
Finishes, meaning cabinets, countertops, flooring, tile, lighting, plumbing fixtures, and interior millwork, are what buyers obsess over and what actually move the needle least in total dollars compared to structure. That said, finish selections are where allowance games do the most damage. A thin allowance on cabinets or flooring looks fine on a one-page quote and then becomes a painful change order once you are standing in a showroom. Our open-book process prices your actual selections before you sign, specifically so this line is a real number, not a placeholder.
Why Do These Percentages Shift From Project to Project?
Two $2M projects can have completely different breakdowns. A serviced lot in Aledo with a simple roofline and mid-range finishes might run light on site work and land, heavier on finishes. A raw tract outside Peaster with a complex roof, a basement, and a long private driveway shifts serious weight into site work and construction before finishes even enter the conversation. The percentages are a starting framework, not a formula, which is exactly why I build a line-item budget for every client instead of quoting a blended number. The NAHB cost of construction survey breaks a typical home into more than thirty cost categories nationally, and our own budgets end up looking a lot like that once you dig past the five big lines.
What does not change from project to project is what the budget is protecting. A one-year workmanship warranty, a two-year systems warranty, and a ten-year structural warranty come with every build regardless of which line carried the most weight, and so does having an owner on site rather than a rotating cast of project managers. Those are part of what you are paying for in the construction line, even though no single invoice says so.
What Should You Do Next?
- Get a real line-item budget before you fall in love with a plan. Bring your land status and your wish list, and I will walk you through where your money actually goes, not a blended per-foot guess. Schedule a free consultation or call me directly at (817) 736-6323.
- Read the tier breakdown for your area. My post on what it costs to build in Weatherford shows what each price band actually buys.
- Ask every builder to show you these five lines separately. After 100+ homes since 1995, I can tell you that a builder who will not separate land, design, site work, construction, and finishes is a builder hoping you will not notice which one he is light on.
A single per-foot number or a lump-sum total tells you almost nothing about where your money is going. Five honest lines tell you everything.
