South Lake Union building permits — week of September 7, 2026

Building and land-use permits published for South Lake Union the week of September 7, 2026, from the City of Seattle SDCI datasets.

In the week of September 7, 2026, South Lake Union logged 5 permits — 1 newly filed and 4 newly issued — across Seattle's building and land-use permitting, representing an estimated $997k in construction value. The largest project on file was “Construct tenant improvements for amenity spaces at floors 1 15 and 16 of existing comm…” — a $500k–2M job. Most activity fell in the Under $25k range.

1
New applications
4
Issued permits
5
Total permits
$997k
Est. project value

Projects by value band

Under $25k
2
$25k–100k
1
$100k–500k
1
$500k–2M
1
Over $2M
0

Notable projects

Owner names and mailing addresses are available to subscribers.

71•••21-CN
New application

Construct tenant improvements for amenity spaces at floors 1 15 and 16 of existing commercial building occupy per plan.

$500k–2MSouth Lake Union
71•••30-CN
Issued

Construct tenant improvement to existing office space subject to field inspection STFI.

$100k–500kSouth Lake Union
71•••39-CN
Issued

Construct tenant improvement project at 300 Boren Ave N for removal of existing demountable partial-height partitions and installation of demountable full-height partitions and associated ceiling track system to deck above STFI.

$25k–100kSouth Lake Union
71•••72-CN
Issued

Construct tenant improvement project at 399 Fairview Ave. N to reconfiguring full-height demountable partitions in existing office space subject to field inspection STFI.

Under $25kSouth Lake Union
71•••45-CN
Issued

Construct Tenant Improvement Project at 399 Fairview Ave N for installation of full-height demountable partition wall and installation of associated ceiling track system subject to field inspection STFI.

Under $25kSouth Lake Union

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