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Attachment B - Massing Diagrams and Shadow Studies

Palo Alto City Council
November 17, 2025

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Attachment B - Massing Diagrams and Shadow Studies
Meeting
November 17, 2025
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Palo Alto City Council
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1 PALO ALTO, CA | NOvember 4, 2025 | mTC
0 100’50’
340 POrTAGe Ave | eXISTING AerIAL + ZONING SUmmArY

ZONING INFORMATION
APN # 132-38-071
Site Area 3.25 acres
Zoning
RM-30 (Medium Density Multiple-Family Residence District) *New Zoning from Specific Plan: NV-R4 (High Density Multiple-Family Residential District)
Comprehensive
Plan Land Use
Designation
MF
Development
Standards
FAR 0.6:1
Density Min. 16 DU/ Acre - Max. 30 DU/Acre
Height 35 Feet
Setbacks
• Front = 20 Feet
• Interior side yards = 10 Feet
• Interior rear yards = 10 Feet
• Street side = 16 Feet
Parking
• 1 space per micro unit
• 1 spaces per studio unit
• 1 space per 1-bedroom unit
• 2 spaces per 2-bedroom unit (at least 1
covered)
Bicycle Parking 1 space per unit
Min. landscape/open
space coverage (percent) 30%
Min. usable open space
(sf per unit) 150 SF/Unit
Min. common open space
(sf per unit) 75 SF/Unit
Min. Private Open Space
(sf per unit) 50 SF/Unit
**See North Ventura Coordinated Area Plan (August 2024)

PARK BLVD

LAMBERT AVE
matadero Creek
PrOJeCT SITe

3.25 ACre
ASH ST
89’
664’
42’
131’
215’
40’
100’
274’
240’
168’
160’
25’
160’
45’
126’
* NV-R4 district provides high-density apartment living, primarily along major transportation corridors near mass transit and employment centers. Density ranges anticipated from 61 to 100 dwelling units per acre, with a maximum FAR of 3.0:1

PORTAGE AVE
2 PALO ALTO, CA | NOvember 4, 2025 | mTC
0 100’50’
340 POrTAGe Ave | OPTION 1 - 50’ CreeK SeTbACK, SOUTH FACING COUrTYArD, eLevATeD GrOUND FLOOr reS.

PARK BLVD

PORTAGE AVE
89’
matadero Creek
664’
42’
ASH ST
131’
215’
40’
100’
274’
240’
Park

2.25 Acre
Common
Room
Trash
Bike Room
Office
Mech
Courtyard exit stair
Parking (45 spaces or 90 w/stackers)
GrOUND FLOOr PLAN
LeveL 2 FLOOr PLAN
LeveL 3-5 FLOOr PLAN
Courtyard
9,730 SF
20’
Front
setback
10’
Side
setback
16’
Street side
setback
Lobby
L
T
T
OPTION 1: 5 STOrIeS bUILDING (± 55 FeeT)
OPTION 1: 5 STORIES (± 55 FEET)

UNIT MIX
Unit Type 1-BR 2-BR 3-BR Total
1st floor 2 2 2 6 units
2nd floor 8 6 6 20 units
3rd floor 9 6 6 21 units
4th floor 9 6 6 21 units
5th floor 9 6 6 21 units
TOTAL 37 26 26 89 units
Mix % 42% 29% 29% 100%
Average Size 590 sf 870 sf 1,080 sf

PARKING
Provided 45 spaces; 0.5 spaces / unit
(90 spaces if stackers; 1 space / unit)
BUILDING AREAS (OPTION 1 - 5 STORIES BUILDING)
Gross Area Residential Common Circulation / Services Parking / Ramp Ground Floor 30,070 5,270 2,320 4,460 18,020
Floor 2 20,220 16,540 595 3,085 -
Floor 3 21,215 17,130 - 3,085 -
Floor 4 21,215 17,130 - 3,085 -
Floor 5 21,215 17,130 - 3,085 -
5 STORIES TOTAL 110,935 73,200 2,915 16,800 18,020
Affordable housing site
1 Acre
Raised residential entrances
Elec
168’
160’
25’
160’
45’
126’

LAMBERT AVE
Alley with special
paving connecting
Lambert Ave to the park
50’ creek centerline
setback
3 PALO ALTO, CA | NOvember 4, 2025 | mTC
0 100’50’
340 POrTAGe Ave | OPTION 2 - 50’ CreeK SeTbACK, NOrTH FACING COUrTYArD, COmmUNITY USeS ON GrOUND FLOOr 89’
matadero Creek
664’
42’
131’
215’
40’
100’
274’
240’
Park

2.25 Acre
Trash
Bike Room
Mech
Courtyard
exit stairs
Office
Mail
Parking (52 spaces or 104 w/stackers)
GrOUND FLOOr PLAN
LeveL 2 FLOOr PLAN
LeveL 3-6 FLOOr PLAN
Courtyard
6,265 SF
20’
Front
setback
10’ Side
setback
16’
Street side
setback
Lobby
L
T
T
OPTION 2: 6 STOrIeS bUILDING (± 65 FeeT)
OPTION 2: 6 STORIES (± 65 FEET)

UNIT MIX
Unit Type 1-BR 2-BR 3-BR Total
1st floor - - - -
2nd floor 9 6 6 21 units
3rd floor 10 6 6 22 units
4th floor 10 6 6 22 units
5th floor 10 6 6 22 units
6th floor 10 6 6 22 units
TOTAL 49 30 30 109 units
Mix % 44% 28% 28% 100%
Average Size 590 sf 870 sf 1,080 sf

PARKING
Provided 52 spaces; 0.5 spaces / unit
(104 spaces if stackers)
BUILDING AREAS (OPTION 2 - 6 STORIES BUILDING)
Gross Area Residential Common Circulation / Services Parking / Ramp Ground Floor 30,430 - 4,780 5,120 20,530
Floor 2 23,920 17,880 700 5,340 -
Floor 3 23,920 18,580 - 5,340 -
Floor 4 23,920 18,580 - 5,340 -
Floor 5 23,920 18,580 - 5,340 -
Floor 6 23,920 18,580 - 5,340 -
6 STORIES TOTAL 150,030 92,200 5,480 31,820 20,530
Affordable housing site
1 Acre
Elec
168’
160’
25’
160’
45’
126’
Community/
Amenity
50’ creek centerline
setback
Alley with special
paving connecting
Lambert Ave to the park

PARK BLVD

PORTAGE AVE
ASH ST

LAMBERT AVE
4 PALO ALTO, CA | NOvember 4, 2025 | mTC
0 100’50’
340 POrTAGe Ave | OPTION 3 - 50’ CreeK SeTbACK, NOrTH FACING COUrTYArD, COmmUNITY USeS ON GrOUND FLOOr 89’
matadero Creek
664’
42’
131’
215’
40’
100’
274’
240’
Park

2.25 Acre
Trash
Bike Room
Mech
Courtyard
exit stairs
Office
Mail
Parking (52 spaces or 104 w/stackers)
GrOUND FLOOr PLAN
LeveL 2 FLOOr PLAN
LeveL 3-7 FLOOr PLAN
Courtyard
6,265 SF
20’
Front
setback
10’ Side
setback
16’
Street side
setback
Lobby
L
T
T
BUILDING AREAS (OPTION 3 - 7 STORIES BUILDING)
Gross Area Residential Common Circulation / Services Parking / Ramp Ground Floor 30,430 - 4,780 5,120 20,530
Floor 2 23,920 17,880 700 5,340 -
Floor 3 23,920 18,580 - 5,340 -
Floor 4 23,920 18,580 - 5,340 -
Floor 5 23,920 18,580 - 5,340 -
Floor 6 23,920 18,580 - 5,340 -
Floor 7 23,920 18,580 - 5,340 -
7 STORIES TOTAL 173,950 110,780 5,480 37,160 20,530
Affordable housing site
1 Acre
Elec
168’
160’
25’
160’
45’
126’
Community/
Amenity
50’ creek centerline
setback
Alley with special
paving connecting
Lambert Ave to the park
OPTION 3: 7 STOrIeS bUILDING (± 75 FeeT)
OPTION 3: 7 STORIES (± 75 FEET)

UNIT MIX
Unit Type 1-BR 2-BR 3-BR Total
1st floor - - - -
2nd floor 9 6 6 21 units
3rd floor 10 6 6 22 units
4th floor 10 6 6 22 units
5th floor 10 6 6 22 units
6th floor 10 6 6 22 units
7th floor 10 6 6 22 units
TOTAL 59 36 36 131 units
Mix % 44% 28% 28% 100%
Average Size 590 sf 870 sf 1,080 sf

PARKING
Provided 52 spaces; 0.4 spaces / unit
(104 spaces if stackers; 0.8 spaces / unit)

PARK BLVD

PORTAGE AVE
ASH ST

LAMBERT AVE
5 PALO ALTO, CA | NOvember 4, 2025 | mTC
340 POrTAGe Ave | SHADOW STUDY
NOTe: THIS SHADOW STUDY SHOWS THe SHADOWS CASTeD bY eACH OF THe OPTIONS, ON THe LONGeST DAY OF THe YeAr(JUNe 21) AND THe SHOrTeST DAY OF THe YeAr(DeC 21), AT TWO HOUrS PAST SUNrISe, NOON, AND TWO HOUrS PrIOr TO SUNSeT.

JUNe 21; 8 Am
JUNe 21; 12 NOON
JUNe 21; 6 Pm
DeCember 21; 9 Am
DeCember 21; 12 NOON
DeCember 21; 3 Pm
OPTION 1: 5 STOrIeS, 50’ CreeK SeTbACK, SOUTH FACING COUrTYArD, eLevATeD GrOUND FLOOr reSIDeNTIAL JUNe 21; 8 Am
JUNe 21; 12 NOON
JUNe 21; 6 Pm
DeCember 21; 9 Am
DeCember 21; 12 NOON
DeCember 21; 3 Pm
OPTION 2: 6 STOrIeS, 50’ CreeK SeTbACK, NOrTH FACING COUrTYArD, COmmUNITY USeS ON GrOUND FLOOr JUNe 21; 8 Am
JUNe 21; 12 NOON
JUNe 21; 6 Pm
DeCember 21; 9 Am
DeCember 21; 12 NOON
DeCember 21; 3 Pm
OPTION 3: 7 STOrIeS, 50’ CreeK SeTbACK, NOrTH FACING COUrTYArD, COmmUNITY USeS ON GrOUND FLOOr 6 PALO ALTO, CA | NOvember 4, 2025 | mTC
0 100’50’
340 POrTAGe Ave | SHADOW STUDY - DeCember 21, 3 Pm - mAX SHADe OPTION 1: 5 STOrIeS, 50’ CreeK SeTbACK, SOUTH FACING COUrTYArD, eLevATeD GrOUND FLOOr reSIDeNTIAL
OPTION 2: 6 STOrIeS, 50’ CreeK SeTbACK, NOrTH FACING COUrTYArD, COmmUNITY USeS ON GrOUND FLOOr
OPTION 3: 7 STOrIeS, 50’ CreeK SeTbACK, NOrTH FACING COUrTYArD, COmmUNITY USeS ON GrOUND FLOOr
(25,480 SF)
26%

32.9%
(27 ,280 SF) (32,245 SF)
27 .8%

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