Before you sign a purchase contract on a rehab deal, one decision shapes almost everything that happens after closing: who is actually going to run the renovation. Hire a licensed general contractor to take the whole job, or act as your own owner-builder and manage subcontractors directly.
This isn't just a management-style preference. It changes what lenders will approve, what your insurance actually covers, what permits you can legally pull, and — ultimately — how much of your rehab budget survives to become profit.
Why It Matters
The GC-vs-owner-builder decision touches three things that directly affect your margin.
Financing. Many hard money and rehab-to-perm lenders require a licensed, insured GC on the draw schedule before they'll fund rehab dollars — especially on a first deal or a scope above a certain dollar threshold. Assuming you can self-manage and finding out mid-underwriting that your lender won't allow it can blow up your timeline.
Liability. A licensed GC typically carries general liability and workers' comp coverage that extends to the job site. As an owner-builder, you're often the party legally responsible if an uninsured sub gets hurt on your property — a risk most investors underestimate until they price out an umbrella policy that actually covers it.
Permits. In many jurisdictions, certain scopes of work — structural changes, electrical, plumbing, HVAC — legally require a licensed contractor to pull the permit, not the property owner. Some areas allow an owner-builder permit, but it usually comes with restrictions on hiring unlicensed labor and personal liability if the work fails inspection.
Getting this decision right isn't about which option is cheaper on paper. It's about which option actually gets the job insured, permitted, financed, and finished.
When to Use a General Contractor
A GC is usually the right call when:
- Your lender requires one. If a hard money or rehab loan is funding the deal, check the draw requirements before you assume you can self-manage.
- The scope includes structural, electrical, plumbing, or HVAC work that requires a licensed pull in your jurisdiction.
- You don't have existing relationships with vetted subs in the market — a GC brings a crew and accountability you'd otherwise have to build from scratch.
- You're managing the deal remotely or don't have the bandwidth to be on-site coordinating trades, inspections, and change orders in real time.
- This is your first rehab. The cost of a GC's markup is often cheaper than the cost of your own learning curve on a project with hard money interest accruing daily.
When Owner-Building Makes Sense
Self-managing the rehab can work well when:
- You have proven relationships with licensed subs you've used before and trust to show up and do quality work without a GC coordinating them.
- Your financing doesn't require a GC, or you're using cash or a HELOC where the lender isn't dictating the draw structure.
- The scope is cosmetic — paint, flooring, fixtures, landscaping — and doesn't trigger permits that require a licensed pull.
- You have the time to be the point of contact for every trade, every inspection, and every schedule conflict, because that job doesn't disappear just because you didn't hire a GC to do it.
- The math works. Owner-building can save the GC's markup, typically 10–20% of the job cost — but only if your own time and mistakes don't eat that savings first.
What Each Option Actually Costs You
A GC's markup buys you: a single point of accountability, licensed permit pulls, insurance and bonding, established sub relationships, and — often — lender approval you wouldn't otherwise get. You're paying for risk transfer as much as labor coordination.
Owner-building's savings come with: the full time cost of scheduling and supervising every trade, the liability of being the responsible party if something goes wrong, the risk of scope and cost overruns with no contractual party absorbing them, and the real possibility that a scheduling mistake costs more in holding costs than the GC markup would have.
Neither option is "right." The right one is the one that matches your deal's financing requirements, your local permitting rules, your available time, and your track record managing trades.
Common Mistakes
Assuming you can self-manage before checking with your lender. Confirm draw and licensing requirements before you finalize your rehab budget, not after you're under contract.
Underestimating owner-builder liability. "I'll just be careful" isn't a coverage policy. If you're the permit holder, you're often the liable party.
Hiring a GC and still trying to manage every sub yourself. If you're paying for a GC's coordination, let them coordinate — micromanaging around them erases the value you paid for.
Not budgeting your own time as a cost. Owner-building "saves" the GC markup on paper, but hours spent on-site are hours not spent finding your next deal.
Skipping the permit question entirely. Unpermitted work is one of the most common reasons a flip fails inspection at resale or a refinance appraisal comes in low.
Best Practices
- Confirm your lender's GC and licensing requirements before finalizing your rehab budget — not after.
- Check your local jurisdiction's owner-builder permit rules before assuming you can self-manage electrical, plumbing, or structural scope.
- If self-managing, only use subs you've worked with before or who come strongly vetted — a rehab is the wrong place to test an unknown crew.
- If hiring a GC, get the scope, allowances, and change-order process in writing before work starts, not after the first surprise.
- Track your rehab budget against actuals as the job progresses, regardless of who's running it — the management structure doesn't replace the discipline of watching the numbers.
The GC-vs-owner-builder decision isn't about who's a "real" investor and who isn't. It's a financing, liability, and time-management decision that belongs in your underwriting — right alongside ARV, purchase price, and holding costs — before you ever close on the deal.