Did You Know... Appraisal Edition

What You Might Not Know About Multi-Unit Property Appraisals

(Even If You’ve Been Investing for Years)

We learned this the hard way… and honestly, we want to share it so you don’t have to.

When we bought our first multi-unit, we thought value worked the same way as a single-family home- fix it up, make it look nice and the appraisal would climb right along with it.

New floors, fresh paint, updated units… we figured we were doing everything right.

Then refinance time came and the number didn’t come back where we thought it would.

That’s when we got a crash course in how multi-unit properties are really valued and let’s just say, it had a lot less to do with countertops and a lot more to do with income.

Whether you’re brand new to investing or have been investing for years, here are 10 things that can quietly affect your appraisal! 

1️⃣ Income Matters More Than Comps

Multi-units are valued primarily on the Income Approach, not just comparable sales.

Appraisers focus on rents, expenses, vacancy and Net Operating Income (NOI). Two identical buildings can appraise completely different if one is under-rented.

2️⃣ Below-Market Rents Lower Value

We all love great long-term tenants. But keeping rents far below market hurts you on paper.

Lower rent = lower income = lower value.

Appraisers don’t factor in loyalty just numbers. Take into account even a $200/month difference per unit can translate into tens or even hundreds of thousands of dollars in valuation change depending on the cap rate.

3️⃣ Poor Record Keeping Hurts You

You can renovate units beautifully, but if you can’t document expenses, utilities, insurance, and maintenance, appraisers estimate higher operating costs.

Higher expenses quickly reduce value.

Paper trails matter more than pretty finishes.

4️⃣ Separate Utilities Raise Value

Properties where tenants pay their own electric, gas, or heat typically appraise higher than “all utilities included.”

Less owner expense strengthens NOI and that boosts value.

5️⃣ Unit Mix Plays a Role

More bedrooms = higher rent potential.

A building full of two-bedrooms usually appraises higher than one filled with studios or one-bedrooms because income ceilings are stronger.

6️⃣ Vacancy History Counts

Even if you’re fully rented today, appraisers review past vacancy and turnover.

Frequent move-outs or long vacancies can lower the income calculation used in valuation.

7️⃣ Deferred Maintenance Drags Value Down

Big systems matter more than cosmetics:

Roofs, boilers, plumbing, electrical, structural concerns, if replacement is near, the cost gets factored into value.

8️⃣ Illegal Units May Not Count

That extra basement unit collecting rent?

If it isn’t legally permitted, the income may be excluded entirely, meaning a “5-unit” could be appraised as a “4-unit.”

9️⃣ 1–4 Units vs 5+ Changes Valuation

Once you cross into 5+ units, properties are valued more like commercial assets.

Income drives the number almost entirely, not residential comps.

🔟 Small Income Streams Add Big Value

Things investors overlook that help appraisals:

Laundry income, garages, storage, utility bill-backs and stable leases all increase documented income, which increases value.

The Reality Most Investors Learn Later

Multi-unit value isn’t emotional, it’s 100% mathematical.

It’s driven by income, expenses and stability… not how nice the units look.

We share this because we truly learned it the hard way and if you understand these factors early, you can make smarter decisions, raise your value faster and avoid appraisal surprises down the road.