Can You Build Multiple ADUs on One Lot in Bend? What Homeowners Need to Know in 2025

As Accessory Dwelling Units (ADUs) surge in popularity across Central Oregon, many Bend homeowners are asking a new question:“Can I build more than one ADU on my property?”

In 2025, the answer is shifting — and Bend is on the verge of allowing two ADUs per single-family lot, opening the door to more flexibility, rental potential, and creative housing solutions.

If you’ve been considering adding an ADU (or two), here’s what you need to know about Bend’s evolving rules.

Bend’s Push for More Housing Options

Bend continues to face a housing shortage, driven by population growth and limited buildable land within the Urban Growth Boundary (UGB). ADUs have become one of the city’s most effective ways to:

• Increase housing supply

• Support multigenerational living

• Create more long-term rental options

• Provide homeowners with a path to additional income

Because of these benefits, the City of Bend is recommending changes to its Development Code that would allow two ADUs on qualifying single-family lots.

What the New Rules Would Allow

The Bend Planning Commission has recommended updates that would permit:

• Two ADUs per single-family lot

• One ADU up to 800 sq ft

• A second ADU up to 500 sq ft

• ADUs to be attached or detached

• Detached ADUs to be built at least 6 feet apart from each other and the main house

This gives homeowners flexibility to build ADUs for:

• Adult children

• Aging parents

• Long-term renters

• Home offices or studio spaces

While the second ADU is capped at a smaller size, it still works well as a compact studio or one-bedroom layout.

What the Current Rules Still Say (Before the Change Takes Effect)

Under the existing Bend Development Code:

• Only one ADU is currently allowed per lot

• Maximum size: 800 sq ft

• ADUs can be attached or detached

The second-ADU rule is expected to move forward in 2025 but must first be approved by Bend City Council before it becomes official.

Benefits of Allowing Two ADUs in Bend

1. More Housing Without More Sprawl

Two ADUs allow Bend to grow inward rather than outward, preserving open space and reducing development pressure.

2. Increased Rental Potential

One ADU could serve as a long-term rental while the other houses family — or both could be income-generating units depending on zoning.

3. Greater Flexibility for Homeowners

Whether you need a home office, caregiver space, or rental income, two ADUs offer unmatched adaptability.

4. Higher Property Value

Properties with multiple legal dwelling units often see significantly higher resale appeal and appraisal value.

Key Considerations Before You Build Two ADUs

Zoning Eligibility

Not every property qualifies. The two-ADU rule applies to single-family lots within the city — but only after final approval.

Infrastructure Requirements

Adding two units may require sewer, water, or utility upgrades. A feasibility assessment is crucial.

Design & Placement

Two detached ADUs must be strategically placed to meet setbacks, privacy needs, and fire separation requirements.

Parking Requirements

Some areas have relaxed requirements, but others still enforce them based on transit proximity.

Fire & Safety Standards

If near wildfire-risk zones, additional safety upgrades may apply.

Will Two ADUs Increase Permit Costs?

Probably. You may face:

• Additional system development charges (SDCs)

• More utility connection fees

• Higher construction costs due to infrastructure requirements

However, the long-term rental income potential often outweighs upfront expenses.

So…Can You Build Multiple ADUs on One Lot in Bend?

Yes — if current recommendations become law in 2025.As of early 2025, you’re legally allowed one ADU, but the proposed changes would expand that to two, with different size limits and spacing rules.

For now, the best move is to:

• Verify zoning

• Review your lot’s capacity

• Speak with an ADU designer or builder

• Stay updated on council decisions

This change would make Bend one of the most ADU-friendly cities in Oregon — and a prime location for income-boosting multi-unit properties.

FAQs

Can I build two ADUs on my Bend property right now?

Not yet. As of early 2025, the city allows only one. The second ADU allowance is pending city council approval.

Can both ADUs be detached?

Yes, under the proposed rules — as long as they are at least 6 feet from structures on the lot.

Can I short-term rent ADUs in Bend?

Usually no. Most ADUs are restricted to long-term rentals, but some zones allow short-term rentals with a special permit.

How big can my second ADU be?

The second unit is capped at 500 sq ft, ideal for studios or compact one-bedrooms.

Will building two ADUs increase my property taxes?

Most likely, yes — any new dwelling increases assessed value. However, ADUs often provide enough rental income to offset the tax increase.