Cost of a 660 square foot guest house in Menlo Park

This accessory dwelling in Menlo Park, CA is breaking ground next week.

Here’s a breakdown of some of the costs. You can download the full budget below.

Editor’s note: The costs listed below were accurate at the time of the project. Updated numbers in parentheses show what the costs would be in 2020.)

Design: $26,146 ($30,000)

Survey: $2,100 ($2,400)

Geotechnical Engineering (Soils Report): $3,650 ($4,200)

Structural Engineering: $4,400 ($5,060)

Energy Efficiency Report: $800 ($920)

Arborist Report: $1,250 ($1,440)

Planning Permits: $2,102 ($2,418)

Building Permits: $3,012 ($3,464)

Fire Department Review: $241 ($280)

Construction $261,251 ($300,440)

The full budget with every line item is here: 660 Square Foot Backyard Cottage Budget

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