How to plan a renovation budget and timeline

Planning a home renovation starts with defining your project scope, dividing your work into phases and building a budget that matches each stage, not coming up with a single number you hope covers everything. A HELOC is an especially strong financing tool for a renovation because it lets you draw funds as each phase begins, so you only pay interest on what you've actually spent.

Many homeowners have a clear idea of what they want to accomplish with a home renovation. Maybe they want to change their kitchen layout, upgrade a bathroom or add space for a growing family. However, figuring out how to pay for the project can feel like an intimidating obstacle they have to overcome before they can even begin.

How you pay for a renovation isn't just something to mark off a checklist before you hire a contractor. Your funding should make sense for a project that's completed in stages. Discover how to build a phase-based renovation budget and timeline and learn why a HELOC is uniquely suited to fund it.

Start with scope: Define the project before you price it

Before you discuss the numbers, you need to clearly define what the project actually is. If the project scope is vague, you could over- or underestimate how much you need to borrow. According to the 2025 How America Renovates report, 37% of homeowners went over their original renovation budget, with materials (58%), labor (40%) and unexpected repairs (20%) being the major overages.

For example, saying you want to renovate a bathroom is too broad. However, saying you want to replace the vanity, sink and cabinets narrows the scope so you can build a more realistic budget.

Knowing your must-haves vs. your nice-to-haves helps you determine whether something is essential, can wait or can be crossed off your list. Replacing a cracked bathtub to prevent water damage is essential, while cosmetic upgrades usually aren't. Whether you'll be renovating a single room or updating your entire home can also affect your budget and timeline.

Build your budget in phases, not as a single number

A renovation is a series of small projects that build on previously completed work. You typically can't install new flooring, for example, until you first remove the existing flooring. Knowing how much you need for each phase helps you create a more accurate budget.

Standard renovation phases

Most renovation projects follow a standard sequence:

• Pre-construction (permits, design and material ordering)
• Demolition
• Rough-in (electrical, plumbing and HVAC)
• Drywall and insulation
• Finishes and fixtures
• Final touches and punch list

Each phase has its own costs to determine, and some will be more expensive than others. The rough-in and structural work tend to be the most expensive, while the final touches usually cost much less.

How to estimate each phase

Be sure to get at least two contractor bids to estimate the cost of each phase, and separate labor from materials to make it easier to compare contractors. Labor typically accounts for 50% to 60% of total project costs.

Once you have the numbers, add a contingency reserve for each phase: 10% to 12% for newer homes with cosmetic work, and 15% to 20% for older homes or any work that involves opening walls. Hidden issues like outdated wiring, poorly installed plumbing or mold may only be revealed during demolition and need to be addressed before you can move to the next phase.

Building your timeline around the phases

When building your timeline, set a realistic completion date, then schedule the project phases in reverse order. This helps you determine when each phase should begin and when you should order materials.

Don't forget to factor in the time it takes to get local permits, which can take from two to more than 10 weeks, and add a 20% to 30% buffer to account for delays. Also, keep in mind that you should pay contractors when a phase is complete, not on a specific calendar date.

Why a HELOC fits the way you actually pay for a renovation

You typically pay for a renovation one invoice at a time, not as a lump sum on the first day. A home equity line of credit (HELOC) allows you to borrow what you need, when you need it, at each stage.

A HELOC is more flexible than either a home equity loan or a personal loan. With a home equity loan, you have to commit to borrowing a specific amount before the project begins and pay interest on the full amount. Personal loans are unsecured and typically have higher interest rates. Both are better suited to situations where you know the full amount upfront, not the large, multi-phase projects where your costs can evolve.

With a HELOC, you pay interest only on what you actually borrow, not on your approved credit limit. This can help keep your borrowing costs low throughout the project. For example, if you draw $30,000 of a $100,000 line in the first phase of your renovation, you only pay interest on $30,000 while planning the second phase.

Another potential advantage of financing a renovation with a HELOC is that the interest may be tax-deductible when you use the funds to substantially improve the home securing the loan. Be sure to consult with a tax advisor for the latest IRS rules before beginning your project.

How to implement a phase-based HELOC funding strategy

Create your own phase-based funding strategy in six simple steps:

• Scope and sequence the project first: Define your phases, get contractor bids for each phase and set a realistic timeline before applying for financing.
• Estimate your total line need: Add up the phase estimates and add your contingency buffer for each phase. Then request a line sized slightly above that total.
• Apply for your HELOC before demolition begins: Don't wait until mid-project to apply. With Citizens FastLine, a personalized offer takes minutes, and the closing can happen in as few as seven days, so the line can be in place before the first crew arrives.
• Draw as contractor invoices arrive: Match each draw to a completed phase or milestone invoice to minimize interest costs and preserve the remaining line for later phases or contingencies.
• Track draws against your phase budget: Maintain a simple log of each draw, the phase it funded and remaining line availability.
• Reassess after each major phase: If phase one came in under budget, the contingency reserve can roll forward to phase two. If an unexpected cost emerges, the available line absorbs it.

Build a financing plan that moves with your renovation

With some loan products, it can take six weeks or longer to get approved for financing, putting your project on hold. And if you underestimate your needs, you may need additional financing to cover the difference.

A HELOC is different. It's a flexible tool that moves alongside your project, and Citizens FastLine makes it easy to get started. Receive a personalized offer in minutes with no impact on your credit score. In many cases, you don't even need an appraisal, and the closing can be as few as seven days. A HELOC from Citizens is a simple way to keep your project on track and your borrowing costs in check.

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