HomeMy WebLinkAboutASRDRB20210211 5.2
DESIGN REVIEW BOARD STAFF REPORT 5.2
TO: Design Review Board Members February 11, 2021
SUBJECT: Review and provide comments on the architectural elevations, site plan,
and landscape design for Development Plan request DEV21-0001 for a
previously approved five-lot subdivision (SD9543). The property is located
at 1485 Lawrence Road
PROJECT DESCRIPTION
The project includes a Development Plan request (DEV21-0001) to review architectural
elevations, floor plans, and landscaping for the development of five new residences in a
previously approved subdivision, SD9543. The subdivision was approved by the
Planning Commission on December 9, 2020. Conditions of Approval require that
architectural plans for the project be reviewed by the Town under a separate
Development Plan application.
EVALUATION
Architecture & Floor Plans
The subject plot plan appears to be consistent with the approved subdivision and the
required items outlined in the conditions of approval:
• The development criteria for the lots are consistent with R-40; Single-Family
Residential Zoning District.
• No interior street lighting is proposed to be installed and the proposed
driveway/entry lighting for the individual properties provide a pleasant accent to
the front of the residences.
• Five colors and materials schemes are provided for two Craftsman, two
Farmhouse, and one French Country style residences. The colors are similar to
colors the Design Review Board has approved of in the past.
• Two different floor plans, one with two alternative front elevation treatments
(Farmhouse, Craftsman) and the other with three alternative front elevation
treatments (Farmhouse, Craftsman, and French Country), are proposed.
1485 Lawrence Road – Development Plan 2 February 11, 2021
The following comments are design recommendations to improve the elevations that will
be more visible from the public right-of-way:
• Lot 1 Front Elevation: The ridge line appears to be extensive. The Planning
Division recommends the Design Review Board consider adding a dormer, adding
a hip element to the two ends, or reducing the height of segments to reduce the
long ridgeline.
• Lot 1-5 All Elevations: The windows on the front elevations appear to not be
consistent with the windows seen on all other sides of the residence. The Design
Review Board should consider the window treatment for all four elevations.
Landscape
The subject plot plan appears to be consistent with the approved subdivision and the
required items outlined in the conditions of approval:
• All trees are a minimum of 15-gallon container sizes and the shrubs are a minimum
of 5-gallons in size.
• The applicant is required to install a decomposed granite pathway along the
Lawrence Road frontage per the Lawrence Road/Leema Specific Plan.
The following comments are design recommendations to improve the elevations that will
be more visible from the public right-of-way:
• Camphor trees can be destructive to pavement and sidewalks. The Chinese Elm
and Camphor street trees should be changed to California Sycamore and Valley
Oaks.
• Landscaping plans should include a cross section of the bio-retention basin.
• Landscaping plans should include all cross hatching and symbols in their legend
and plant list. There are some cross hatchings and speckling shown in the bio-
retention basin and front yard that are not listed.
• Move the curb at the entrance adjacent to the Oak tree back away from the trunk
of the tree.
• There is a possibility that retaining walls will be required for areas along the front
walking path/trail.
1485 Lawrence Road – Development Plan 3 February 11, 2021
RECOMMENDATION
Approve the architecture, site plan, and landscape design for Development Plan request
DEV21-0001 for a previously approved five-lot subdivision (SD9543).
Prepared by:
Riley Anderson-Barrett
Assistant Planner
Attachments: A - Architectural Plans
B - Landscape Plans
C - Colors and Materials
Irvine, California 92618
PH (949) 387-3800
8881 Research Drive,
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P P
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RESIDENCE RESIDENCE RESIDENCE RESIDENCE
PET BOARDING SCHOOL
2
2
2
3
7 7
2
7
2
11
2
11
1
7
21
7
2
8
10
(E) VALLEY OAK TREE
(E) VALLEY OAK TREE
(E) VALLEY OAK TREE
2
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5b
5c
5b
9
5b
3 3
4
3
4
4
9
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6 6
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2
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NOTE:
(4) BROADLEAF EVERGREEN SCREEN TREES
FINIAL LOCATIONS TO BE COORDINATED
BETWEEN THE BUILDER AND ADJACENT
PROPERTY OWNER TO MAXIMIZE SCREENING
4
REFER TO L1.2 FOR PLANT AND AMENITY LISTS, & DETAILS
REFER TO L1.3 FOR PLANT IMAGES
REFER TO L1.4 FOR WELO CALCS PER LOT
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ATTACHMENT B
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SHRUBS
ARCTOSTAPHYLOS 'HOWARD MCMINN' (MANZANITA)5 GAL LOW
CISTUS PURPUREUS (ORCHID ROCKROSE)5 GAL LOW
COLEONEMA 'SUNSET GOLD' (PINK BREATH OF HEAVEN)5 GAL MED
ELAEAGNUS MACULATA (GOLDENLEAF ELAEAGNUS)5 GAL LOW
FRANGULA CALIFORNICA (CALIFORNIA COFFEEBERRY)5 GAL LOW
FREMONTODENDRON CALIFORNICA (FLANNEL BUSH)5 GAL LOW
HETEROMELES ARBUTIFOLIA (TOYON) 5 GAL LOW
JUNIPERUS COLUMNAR 'HETZ'S COLUMN' (JUNIPER)5 GAL LOW
LOROPETALUM CHIN. 'BURGUNDY' (FRINGE FLOWER)5 GAL LOW
MYRICA CALIFORNICA (PACIFIC WAX MYRTLE)5 GAL LOW
NANDINA 'FIRE POWER' (DWARF NANDINA)5 GAL LOW
PLUMBAGO AURICULATA (CAPE PLUMBAGO)5 GAL MED
ROSMARINUS 'TUSCAN BLUE' (TUSCAN ROSEMARY)5 GAL LOW
SALVIA LEUCANTHA 'FIGUEROA' (PURPLE SAGE)5 GAL LOW
TEUCRIUM FR. 'COMPACTA' (COMPACT GERMANDER)5 GAL LOW
WESTRINGIA FRUTICANS (SEACOAST ROSEMARY)5 GAL LOW
GRASSES AND PERENNIALS
DIETES BICOLOR (FORTNIGHT LILY)1 GAL LOW
LAVANDULA ANGUSTIFOLIA (ENGLISH LAVENDER)1 GAL LOW
LOMANDRA LONGIFOLIA 'BREEZE' (DWARF MAT RUSH)1 GAL LOW
MUHLENBERGIA RIGENS (DEER GRASS)5 GAL LOW
PENNISETUM S. 'RUBRUM' (RED FOUNTAIN GRASS)5 GAL LOW
SALVIA NEMEROSA (SAGE)1 GAL LOW
TEUCRIUM LUCIDRYS (PROSTRATE GERMANDER)1 GAL LOW
GROUNDCOVERS:
CAREX DIVULSA (BERKELEY SEDGE)1 GAL @ 36" O.C. LOW
DESCHAMPSIA CESPITOSA (TUFTED HAIRGRASS)1 GAL @ 36" O.C. LOW
ERIGERON KARVINSKIANUS (SB DAISY)1 GAL @ 36" O.C. LOW
JUNCUS PATENS (CALIFORNIA GRAY RUSH)1 GAL @ 36" O.C. LOW
LANTANA MONTEVIDENSIS (LANTANA)1 GAL @ 36" O.C. LOW
MYOPORUM PARVIFOLIUM (MYOPORUM)1 GAL @ 36" O.C. LOW
ROSMARINUS PROSTRATUS (ROSEMARY)1 GAL @ 36" O.C.LOW L1.2
PL
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RECOMMENDED PLANT LIST:
SYMBOL BOTANICAL NAME (COMMON NAME)SIZE WATER USE
TREES
ACER PALMATUM 'SANGO KAKU' (JAPANESE MAPLE) 15 GAL MEDIUM
ARBUTUS 'MARINA' (ARBUTUS, STANDARD)15 GAL LOW
CERCIS OCCIDENTALIS (WESTERN REDBUD, STANDARD)15 GAL LOW
CINNAMOMUM CAMPHORA (CAMPHOR TREE)15 GAL MEDIUM
LAGERSTROEMIA 'MUSKOGEE' (CRAPE MYRTLE STD)15 GAL LOW
QUERCUS AGRIFOLIA (CALIFORNIA LIVE OAK)15 GAL LOW
PISTACIA CHINENSIS (CHINESE PISTACHE)15 GAL LOW
ULMUS PARVIFOLIA (CHINESE ELM)15 GAL MEDIUM
NOTES:
1. ALL POSTS TO BE PRESSURE TREATED DOUGLAS FIR, ALL OTHER WOOD MEMBERS TO BE ROUGH SAWN DOUGLAS FIR.2. HOLD TOP RAILS LEVEL, STEP FENCE & ALTER PANEL
WIDTH AS NECESSARY TO CONFORM TO GRADES.3. ALL METAL FASTENERS SHALL BE GALVANIZED.
8 FT. HEIGHT WOOD FENCE DETAIL
NO SCALE
A
B
C
D
E
36
"
3"
H
I
SECTION:ELEVATION:
A
B
C
D
G
DESCRIPTION:
A - 2x6 TOP, BOTTOM AND RAILS (HOLD LEVEL)
B - 1x4 RSDF DOUBLE CLEATS AT RAILSC - 1x8 RSDF VERTICAL BOARDS, OVERLAP 1"
D - 6x6 PTDF POSTS AT 8 FT. SPACING (MAX).
E - FINISH GRADEF - 1x2 VERTICAL STAKES SELF-SPACED, W/ 1" NAIL STRIPSG - 2x8 PTDF KICKER BETWEEN TALL POSTS, EXTEND
OVER LOW POSTSH - 18" DIAMETER x 36" DEEP CONCRETE FOOTING AT POSTSI - WOOD POSTS EXTEND 3" THRU BOTTOM OF CONCRETE
FOOTING INTO 4" DEEP CLEAN SAND BASEEG
10
"
A
10
"
8'
-
0
"
8'
-
0
"
NO SCALE
6 FT. HEIGHT WOOD FENCE DETAIL
ITEM DESCRIPTIONS:
A - 2"X4" CAP; CONTINUOUS
B - 1"X4" CLEATS; BOTH SIDES
C - 1"X8" BOARDS; ANGLE SET WITH 1" OVERLAP
D - 4"X4" PTDF POSTS
E - 2'X4" BOTTOM STRINGER
F - 2"X6" PTDF KICKER
G - 8"ØX36" DEEP CONCRETE FOOTING
H - FINISH GRADEI - EXTEND WOOD POSTS INTO 3" DEEP
BASE OF CLEAN SAND
NOTES:
1. ALL WOOD TO BE ROUGH SAWN REDWOOD UNLESS
NOTED OTHERWISE.
2. HOLD TOP RAIL LEVEL; STEP FENCE & ALTER PANEL WIDTH AS NECESSARY TO CONFORM TO GRADES.
AB
C
D
F
DABC
BE
B
2"
6'
-
0
"
H
G
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-
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"
F
H
ELEVATION:SECTION:
I
1
2
SITE AMENITIES LIST:
1 8 FT. HEIGHT SOLID WOOD FENCE ALONG SOUTH PROPERTY LINE;
SEE DETAIL 1/L1.2
2 6 FT. HEIGHT SOLID WOOD FENCE; SEE DETAIL 2/L1.2
3 DECORATIVE METAL MAILBOX AT EACH LOT; SEE IMAGE ON L1.2.
4 4 FT. WIDE CONCRETE ENTRY WALK WITH MEDIUM BROOM
FINISH AND SCORING AT 4 FT. SPACING
5a CONCRETE DRIVEWAY WITH MEDIUM BROOM FINISH, 12" WIDE
SCORED PERIMETER BAND AND DEEP SCORING ON 8 FT. GRID
5b CONCRETE DRIVEWAY WITH MEDIUM BROOM FINISH, 12" WIDE
SCORED PERIMETER BAND AND DEEP SCORING ON 8 FT.
DIAGONAL GRID PATTERN
5c CONCRETE DRIVEWAY WITH MEDIUM BROOM FINISH, 12" WIDE
SCORED PERIMETER BAND, CROSS BANDING AND DEEP SCORING
ON GRID PATTERN
6 3 FT. WIDE CONCRETE WALKWAY WITH MEDIUM BROOM FINISH
AND DEEP SCORING AT 3 FT. SPACING, TO SIDEYARD GATE
7 INDIVIDUAL RESIDENCE PROPANE TANK ON 5 FT. x 10 FT. CONCRETE
PAD; 10 FT. CLEAR SETBACK LINE FROM HOUSE AND PROPERTY
LINES SHOWN
8 5 FT. WIDE PATHWAY OF DECOMPOSED GRANITE (GOLD COLOR)
PATH MEETS PAVED TRANSITION SURFACE AT INTERSECTION
9 PATHWAY OF FLAGSTONE PADS SET ON GRADE
10 STORMWATER DETENTION BASIN WITH PLANTING COMPLIANT
CONTRA COSTA COUNTY STORMWATER GUIDEBOOK PLANT LIST
11 EXISTING WOOD AND WIRE FENCE DEER FENCE ALONG EAST
PROPERTY LINE ADJACENT OPEN SPACE (NO NEW FENCING PROPOSED)
12 EXISTING WOOD AND WIRE FENCE FENCE OF ADJACENT RESIDENCE
(NO NEW FENCING PROPOSED)
METAL MAILBOX AT EACH LOT
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PL
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S
L1.3
Acer palmatum 'Sango Kaku'
JAPANESE MAPLE
Arbutus 'Marina'
MARINA ARBUTUS
Cercis occidentalis
WESTERN REDBUD
Cinnamomum camphora
CAMPHOR TREE
Lagerstroemia 'Muskogee'
CRAPE MYRTLE (Std.)
Quercus agrifolia
CALIFORNIA LIVE OAK
Pistacia chinensis
CHINESE PISTACHE
Ulmus parvifolia
CHINESE ELM
Arctostaphylos 'Howard McMinn'
MANZANITA
Cistus purpureus
ORCHID ROCKROSE
Coleonema 'Sunset Gold'
PINK BREATH OF HEAVEN
Elaeagnus maculata
GOLDEN ELAEAGNUS
Frangula californica
CALIFORNIA COFFEEBERRY
Fremontodendron californica
FLANNEL BUSH
Heteromeles arbutifolia
TOYON
Juniperus columnar 'Hetz's Column''
JUNIPER
Loropetalum chin. 'Burgundy'
FRINGE FLOWER
Myrica californica
PACIFIC WAX MYRTLE
Nandina 'Fire power'
DWARF NANDINA
Plumbago auriculata
CAPE PLUMBAGO
Rosmarinus 'Tuscan Blue'
TUSCAN ROSEMARY
Salvia leucantha 'Figueroa'
PURPLE SAGE
Teucrium fruticans 'Compacta'
COMPACT GERMANDER
Westringia fruticans
SEACOAST ROSEMARY
Dietes bicolor
FORTNIGHT LILY
Lavandula angustifolia
ENGLISH LAVENDER
Lomandra longifolia 'Breeze'
DWARF MAT RUSH
Muhlengergia rigens
DEER GRASS
Pennisetum 'Rubrum'
RED FOUNTAIN GRASS
Salvia nemorosa
SAGE
Teucrium lucidrys
PROSTRATE GERMANDER
Carex divulsa
BERKELEY SEDGE
Deschampsia cespitosa
TUFTED HAIRGRASS
Erigeron karvinskianus
SANTA BARBARA DAISY
Juncus patens
CALIFORNIA GRAY RUSH
Lantana montevidensis
LANTANAMyoporum parvifolium
MYOPORUM
Rosmarinus prostratus
ROSEMARY
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L1.4
WE
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ATTACHMENT C