Additions

Second-story addition on a 1920s bungalow

How a Berkeley couple added a full second floor to a 1920s bungalow on a tight historic lot — design review, structural coordination and permit set delivered remotely.

Finished project — hero photo
Project
580 sq ft second story
Drawing set
$14,200
To permit
9 weeks
Design review
Approved
THE BRIEF

Add two bedrooms and a bath above an 1,100 sq ft bungalow without altering the street-facing façade, and clear Berkeley's design review and structural plan check inside a budget the owners had already committed to their contractor.

The challenge

The bungalow sits on a narrow lot in a neighborhood that scrutinises anything changing the street elevation. A second story meant new shear walls, a reworked foundation connection, and a roofline that still reads as period-correct from the sidewalk.

The owners had a fixed construction budget and a contractor already holding a start date nine weeks out. They needed a firm price for the drawing set before committing, and no schedule risk from a drawn-out design phase.

How we matched

The instant estimate returned a typical range for a 580 sq ft second-story addition in Berkeley, built from square footage, structural add-ons and the city's jurisdiction complexity score. Two CA-licensed architects with East Bay design-review experience responded within 48 hours, and the owners hired one of them directly at $14,200 for the full set.

  • Both architects verified as actively licensed in California
  • Filtered for historic-district and design-review experience
  • Structural engineer coordinated by the architect inside the same set
  • Hired and paid the architect directly — ArchitectHire took nothing from the project

We had a contractor holding a start date, so a firm number and a firm date mattered more than anything else. Both showed up exactly as promised.

Daniel & Priya M., homeowners · Berkeley, CA

The outcome

The architect delivered as-builts, proposed plans, elevations, a roof plan and full structural sheets with shear-wall schedules nine weeks after the scoping call — including a revised dormer profile that satisfied design review without shrinking the bedrooms.

Berkeley issued the permit on the second review, with only a lighting note to clear. The contractor kept his original start date, and the owners paid the architect directly on the milestone schedule they had agreed up front.

Second-floor plan drawing
Shear walls going up
New bedroom finished
Street elevation finished

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