Scenario: The bathroom needs updating. One of you wants to do it now; the other thinks it can wait. Who decides? Who pays? And does it change anything about ownership?
First distinction: repairs vs upgrades
Not all home improvements are created equal. The first step is distinguishing between two types:
Repairs (maintenance)
Work that's necessary to maintain the home's function or value. If you don't do it, things get worse.
- Fixing a leaky roof
- Replacing a broken furnace
- Repairing plumbing issues
- Addressing safety hazards
Default rule: Repairs are usually shared costs, split according to your normal cost-sharing agreement. They don't typically affect equity because you're maintaining, not improving.
Upgrades (improvements)
Work that's optional and intended to improve the home beyond its current state. The home would be fine without it.
- Kitchen renovation with new cabinets and counters
- Finishing a basement
- Adding a deck or patio
- Upgrading to premium fixtures
Default rule: Upgrades need agreement. If both people want it and split the cost, it's shared. If one person wants it more, they might pay more (or all of it).
The gray zone (and how to handle it)
Many renovations have elements of both. A bathroom renovation might include necessary plumbing repairs (maintenance) and optional tile upgrades (improvement).
Simple approach: Estimate the "basic" version (what you'd do if you just needed it functional) and the "upgraded" version. The difference is the upgrade premium. Split the basic cost normally; decide who pays the premium.
Approval thresholds (the rule that prevents conflict)
Before any renovation conversation, agree on spending thresholds:
- Under $500: Either person can approve (e.g., minor repairs, maintenance).
- $500–$2,000: Notify the other person; proceed unless they object within 48 hours.
- Over $2,000: Requires unanimous agreement before proceeding.
- Emergency repairs: Either person can approve, but notify ASAP and document costs.
Adjust these numbers to fit your situation. The specific amounts matter less than having clear rules.
Three models for renovation costs
1) Split according to ownership (simplest)
If you're 50/50 owners, you split renovation costs 50/50. If you're 60/40, you split 60/40.
Pros: Simple, consistent with ownership.
Cons: Doesn't account for who wanted the upgrade or who benefits more.
2) "Who wants it more" pays the difference
Agree on a baseline (the functional version), split that normally, and whoever wants the premium upgrade pays the difference.
Example: Bathroom renovation could be done for $8,000 (basic) or $15,000 (upgraded). You split $8,000 normally ($4,000 each). Person A wants the upgrade, so they pay the extra $7,000.
Pros: Fair when preferences differ.
Cons: Requires agreeing on what "basic" means.
3) Track as contribution (affects equity)
Treat renovation spending as a contribution that affects equity shares at sale.
Example: Person A pays $20,000 for a kitchen renovation. That $20,000 is added to their "contribution" and factored into the equity split at sale.
Pros: Recognizes that improvements add value.
Cons: Renovations don't always add dollar-for-dollar value. A $20,000 kitchen might only add $12,000 to sale price. You'll need to agree on how to value it.
Should renovations affect equity?
This is the harder question. There's no universal right answer — it depends on your agreement. Here are the common approaches:
Option A: Renovations don't affect equity
Treat all agreed renovations as shared costs. They're part of maintaining/improving "our" home, not tracked separately.
When it works: Long-term partnerships where you're building a life together and don't want to track everything.
Option B: Only major renovations affect equity
Set a threshold (e.g., $10,000). Anything below is shared cost; anything above is tracked as a contribution.
When it works: When one person is funding significant improvements that clearly add value.
Option C: All renovation spending is tracked
Every dollar spent on improvements is recorded as a contribution by whoever paid it.
When it works: Investment-focused co-ownership where you want precise accounting.
What about sweat equity?
If one person does the work themselves, should that count as a contribution?
Common approaches:
- Don't count it: Only cash contributions count. Simplest approach.
- Track hours at agreed rate: Agree on an hourly rate (e.g., $25/hour for painting, $50/hour for skilled work). Track hours and add to contributions.
- Estimate contractor cost: If DIY saves $5,000 vs hiring out, credit the person who did the work with some portion of that savings.
The challenge with sweat equity is that it's subjective and can lead to disputes. The safest default is "DIY labor doesn't count unless we agree otherwise in writing before the project starts."
A simple renovation agreement template
Before any significant renovation, write down:
- What: Description of the work.
- Why: Repair or upgrade?
- Budget: Total expected cost.
- Split: Who pays what percentage.
- Equity impact: Does this affect ownership shares? If yes, how?
- Timeline: When does it start/finish?
- Decision-maker: Who handles contractor selection, change orders, etc.?
Practical takeaways
- Distinguish repairs from upgrades: Repairs are usually shared; upgrades need agreement.
- Set approval thresholds: Know what spending requires discussion vs. what can proceed.
- Decide equity impact before starting: Don't negotiate this after the money is spent.
- Document agreements: A quick email or shared note prevents "I thought we agreed..." later.
How Partnered helps
Partnered lets you log renovation spending and categorize it (repair vs upgrade, shared vs personal). When it's time to discuss equity or a buyout, you have a clear record of who contributed what — no memory games.
Education only — not legal or tax advice. For significant renovations, consider consulting with a professional about how improvements affect property value and tax implications.