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What Are You Allowed to Build at 474 Atchison St, Pasadena, CA, 91104?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 984 sq ft allowed By Right, or possibly more by Special Permit.

In Home Apartment

(Conversion or Addition)

Probably Allowed
This property meets the requirements for an Internal ADU of up to 1,000 sq ft allowed By Right, or possibly more by Special Permit.

Swimming Pool

Probably Allowed
This property likely meets the zoning requirements to build a swimming pool. Based on applicable zoning limits, the estimated buildable area for a pool. Final feasibility may depend on site-specific conditions and local interpretation.

Single Family

Probably Allowed
This property likely meets the zoning requirements to build a Single-Family home up to 2,353 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multifamily

Home Addition

Probably Allowed
We estimate you can expand this property by up to 984 sq ft under current zoning rules. This may allow for a horizontal addition, a vertical addition, or both, depending on design and permitting.

Property facts

Streetview picture of 474 Atchison St, Pasadena, CA, 91104

Zoning Jurisdiction

PASADENA

Parcel ID

5838026005

Property Type

Single Family

Zone

RS-6

Year Built

1923

Lot Size

6,177 sq ft

Gross Building Area

1,893 sq ft

Gross Floor Area

1,369 sq ft

Estimated

Living Area

846 sq ft

Basement Area

0 sq ft

Impervious Surface

1,893 sq ft

Estimated
30.6%of lot coverage

ADU rules for Pasadena, CA

Based on public data and AI. Check with a pro. Read More

© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.

What Are You Allowed to Build at 474 Atchison St, Pasadena, CA, 91104?

Backyard Cottage

(Detached ADU)

Probably Allowed
This property meets the requirements for a Detached ADU of up to 984 sq ft allowed By Right, or possibly more by Special Permit.

In Home Apartment

(Conversion or Addition)

Probably Allowed
This property meets the requirements for an Internal ADU of up to 1,000 sq ft allowed By Right, or possibly more by Special Permit.

Swimming Pool

Probably Allowed
This property likely meets the zoning requirements to build a swimming pool. Based on applicable zoning limits, the estimated buildable area for a pool. Final feasibility may depend on site-specific conditions and local interpretation.

Single Family

Probably Allowed
This property likely meets the zoning requirements to build a Single-Family home up to 2,353 sq ft of zoning-counted floor area allowed By Right, or possibly more by Special Permit.

Multifamily

Home Addition

Probably Allowed
We estimate you can expand this property by up to 984 sq ft under current zoning rules. This may allow for a horizontal addition, a vertical addition, or both, depending on design and permitting.

Property facts

Streetview picture of 474 Atchison St, Pasadena, CA, 91104

Zoning Jurisdiction

PASADENA

Parcel ID

5838026005

Property Type

Single Family

Zone

RS-6

Year Built

1923

Lot Size

6,177 sq ft

Gross Building Area

1,893 sq ft

Gross Floor Area

1,369 sq ft

Estimated

Living Area

846 sq ft

Basement Area

0 sq ft

Impervious Surface

1,893 sq ft

Estimated
30.6%of lot coverage

ADU rules for Pasadena, CA

Based on public data and AI. Check with a pro. Read More

© 2026 TheBuilder AI Inc. d/b/aFutureLot. All rights reserved.