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HomeMy WebLinkAboutOshkoshHousingDesignBookOshkosh House Design Book City of Oshkosh Planning Services Division OJT Oshkosh House Design Book 5 Oshkosh House Design Book City of Oshkosh, Planning Services Division advises the City Manager, Common Council, Boards and Commissions, and community stakeholders on land use issues that impact community growth and redevelopment. The Planning Services Division is responsible for helping to implement and maintain the City’s Comprehensive Plan and Zoning Ordinance and other related community planning documents. Office of Jonathan Tate (OJT) Jonathan Tate, Principal Robert Baddour, Estefania Barajas, Adam Davis, Maria Espinoza, Marguerite Lloyd, Giuliana Vaccarino Gearty, Designers OJT is an urban design and architecture practice. We work on housing, cultural, hospitality, office, planning, and a bit of research, amongst other things. www.officejt.com © 2024 OJT, New Orleans. All rights reserved. No part of this book may be used or reproduced in any manner without written permission from the publisher, except in the context of reviews. Every reasonable attempt has been made to identify owners of copyright. Unless specifically referenced, all images by Authors or permitted by Google’s fair use content guidelines. Errors or omissions will be corrected in subsequent editions. Edition 06 ISBN 9798342654555 Oshkosh House Design Book City of Oshkosh Planning Services Division OJT Oshkosh House Design Book 7 Introduction Context and Type Analysis Concept Design Contextual Guidelines House Plans 10 18 62 72 84 Oshkosh House Design Book 98 Oshkosh House Design Book 1110 Introduction This publication represents work on behalf of the City of Oshkosh, Planning Services Division in collaboration with Office of Jonathan Tate (OJT). This book provides designs for urban infill housing in Oshkosh, Wisconsin. These designs are intended to provide affordable, energy-efficient homes that reflect their context and promote residential development in the city. Though this study focuses on only a few portions of Oshkosh, the concepts and designs presented herein are intended to be applicable to a variety of contexts and needs in the American Midwest and beyond. This work was heavily informed by a context-driven approach to design. As such, this book also examines the existing housing stock in Oshkosh and provides a conceptual framework with which to tackle the issue of infill housing. A conceptual framework for urban infill housing. Oshkosh House Design Book 13 Oshkosh Oshkosh is a city in southeastern Wisconsin. The county seat of Winnebago County, it has a population of around 67,000 (metro area: 95,000) and is located on the western shore of Lake Winnebago. First settled by the Menominee Nation, what is now Oshkosh began as a trading post and was eventually incorporated in 1853. Thanks to its position along the Fox River and its proximity to hardwood forests, Oshkosh quickly developed a robust lumber industry. Known as the “Sawdust City,” Oshkosh supplied most of the lumber that rebuilt Chicago after the Great Fire of 1871. In Oshkosh today, high-quality affordable housing (for rent and for sale) is in short supply. Building new housing can be expensive, too—the cost to build a house in Oshkosh typically ranges between $176 - $220 per square foot, which is higher than the national average of $100 - $200. While the population of the city is slowly growing, more residents are choosing to live outside of Oshkosh, which is likely due to a combination of community preferences and lack of middle-price options in the city. Vacancy rates are dropping, though vacant parcels still proliferate throughout the urban center. STEVENS PARK MENOMINEE SOUTH HISTORIC 4TH WARDMARINA DISTRICT SACRED HEART HISTORIC 6TH WARD RIVER EAST 14 Neighborhoods in Oshkosh This design booklet looks at housing needs in primarily seven neighborhoods in the Oshkosh urban core: Menominee South, Stevens Park, Historic 4th Ward, River East, Marina District, Historic 6th Ward, and Sacred Heart. These neighborhoods were chosen as urban infill sites due to their number of vacant parcels. These neighborhoods illustrate a variety of housing development types – from single-family, to two-flat residential, to multi-family housing. Menominee South Stevens Park Historic 4th Ward Marina District Historic 6th Ward Sacred Heart River East Context and Type Analysis Oshkosh House Design Book 1918 Integrating into context is more than replicating historic styles. It involves understanding the physical fabric to ground infill development in the neighborhood. 30’ min. 60’ min. 100’ min. SR-9 TR-10 I Oshkosh House Design Book 2120 Minimum Lot Size Single Family Residential 9 (SR-9) Two Flat Residential (TR-10) Institutional (I) This study works within three zoning districts described below. Many of the lots in the project area are long and skinny, ranging between 30’ to 80’ wide and 100’ to 120’ deep. These lots are found in a variety of shapes and configurations (see p. 22-23). This zoning district comprises of areas for moderate density, single-family detached dwellings. This district includes areas for moderate density, single-family detached and two-flat dwellings. This district allows for institutional uses within residential and non-residential neighborhoods. W 15th Ave W 15th Ave Mi n n e s o t a S t I- 4 1 A L T School Ave Me r r i t t A v e Ev e l i n e S t Harney Ave N Main St Ro s a l i a S t TRANGULAR LOT DIVISIONS MAIN ST LOTS STANDARD DIVISION PERPENDICULAR DIVISION SKEWED LOT Oshkosh House Design Book 2322 5’ 7’ 18’ 39’ 16’-5” 49’-5” 9’ 5’-8” 5’ 19’-4” 162’-3” 80’-7” Alley Alley Ceape AveCeape Ave PRIMARY UNIT SECONDARY UNIT (GARAGE) FRONT DRIVEWAY REAR DRIVEWAY 5’ 7’ 18’ 39’ 16’-5” 49’-5” 9’ 5’-8” 5’ 19’-4” 162’-3” 80’-7” Alley Alley Ceape AveCeape Ave PRIMARY UNIT DIMENSIONAL ANALYSIS SECONDARY UNIT (GARAGE) FRONT DRIVEWAY PRIMARY UNIT SECONDARY UNIT (GARAGE) MIN 30’ MIN 15’ MIN 5’ MIN 100’ MIN 25’ MIN 10’ Oshkosh House Design Book 2524 SITE USE DIMENSIONAL ANALYSIS Most lots contain two buildings: a primary residence facing the street and a secondary unit, such as a garage, in the rear. In Oshkosh, garages are required to be detached from the house. Some blocks also have internal alleys, providing rear access to lots. Building placement on a lot—setbacks, driveway placement, etc.—is regulated by local zoning codes. Shown here are dimensional requirements for the single-family residential zoning district (SR-9). 43’ 22’ 25’ 19’ 16’ 18’ 8’-6”Alley Alley Ceape Ave PRIMARY UNIT SECONDARY UNIT (GARAGE) Ceape Ave 43’ 22’ 25’ 19’ 16’ 18’ 8’-6”Alley Alley Ceape Ave PRIMARY UNIT SECONDARY UNIT (GARAGE) PRIMARY UNIT PRIMARY UNIT PRIMARY UNIT GARAGE GARAGE GARAGE Ceape Ave Oshkosh House Design Book 2726 CIRCULATION HOUSE RELATIONSHIPS Lots are typically are accessed in two ways: via the front drive or the rear alleyway (if applicable). Primary units are set back slightly from the sidewalk. Because lots in Oshkosh are long and skinny, neighboring units are usually close to one another. This illustration depicts typical house relationships on a portion of Ceape Avenue. Oshkosh House Design Book 2928 30 Lineage In the early twentieth century, Oshkosh’s thriving local lumber industry and advances in building technology led to the development of standardized housing. This housing was affordable and of good quality, allowing many working- and middle-class families to transition into home ownership. Individuals could choose building components, such as millwork, or even full “kit” houses from the plethora of architectural guidebooks and mail-order catalogs that proliferated in the 1910s and 1920s. The Oshkosh-based Morgan Company began as a supplier of millwork and doors. By the 1920s, its services included distributing catalogs of house components and blueprints, producing millwork, and building workforce housing. Its employee housing options included the Morgan-Aire home, a flexible arrangement where individuals could buy a house with an unfinished second floor at an affordable rate and perform the build-out themselves when convenient. Another nearby enterprise, the Aladdin Company—based in Bay City, Michigan— advertised and manufactured full kit homes. Many of the houses produced by these and other companies are still standing, and can be found throughout Oshkosh’s South Side and other neighborhoods in the city’s urban core. Aladdin kit house, “The Oakley”Ca. 1965 advertisement Oshkosh House Design Book 3332 1919 Catalogue Google, 2024 REAL-WORLD MANIFESTATION ALADDIN KIT HOUSE, “THE YALE” Oshkosh House Design Book 3534 CATALOGUE HOUSES REAL-WORLD MANIFESTATIONS CATALOGUE HOUSES REAL-WORLD MANIFESTATIONS Oshkosh House Design Book 3736 Housing Forms Within the study areas, the housing stock is primarily single-family, detached dwellings, with a small number of duplexes. Much of this housing was built in the late nineteenth and early twentieth centuries during the lumber industry boom. More recent, post-World War II homes abound as well. Overall, Oshkosh boasts a variety of house types, ranging from Prairie Style to Craftsman to Italian Renaissance to Dutch Colonial Revival to post-war Traditional (see opposite). This range of styles serves as a “toolkit” of different roof shapes, plan types, and additions to pull from when developing context- specific infill housing. Variety aside, most homes share a number of important characteristics, including front porches, steeply pitched roofs, wood frame construction, and elevation of the first floor at a foot or more above grade. Oshkosh House Design Book 3938 Morgan Company postcard, ca. 1930s, Tichnor Brothers Collection, Boston Public Library Morgan Company House Catalogue, Oshkosh Public Library GABLE GAMBREL SHED Standard Standard FLAT Standard Parapet Standard ConcaveClipped Extended Dormer GABLE GAMBREL SHED HIP Standard Standard FLAT Standard Parapet Standard Oshkosh House Design Book 4140 Roof Many of these common roof types can be found in Oshkosh. In a region like Wisconsin that experiences high levels of snowfall, flat or concave roofs are far less common. FLOOR PLAN Rectangular Square Corner Asymmetrical Cross Asymmetrical Cross Cross T Asymmetrical T Overlap Oshkosh House Design Book 4342 Plan Simple shapes, like the square and rectangle, can be combined in different ways to create an assortment of plan configurations. Variations of these configurations are found in houses throughout the study neighborhoods. FRONT PORCH SIDE PORCH Addition CORNER PORCH Subtraction Addition Addition REAR ADDITION Addition Subtraction FRONT PORCH SIDE PORCH Addition CORNER PORCH DORMER GARAGE Subtraction Addition Addition Addition Attached REAR ADDITION Addition Detached Oshkosh House Design Book 4544 Additions Additions come in many forms: porches, dormers, garages, rear expansions, and more. Many of these examples can be found in houses throughout Oshkosh. 1 Story basement basement basement SECTION B SECTION A 2 Story 3 Story + 1 2 Dormer 1 2 23’ 30’ Oshkosh House Design Book 4746 Floors Homes in Oshkosh typically range between 1 to 3 stories (not including basements). Half- stories, or “lofts,” are also common. DORMER PORCH DORMER ADDITION 1921 1956 1979 Oshkosh House Design Book 4948 Adaptation Over Time As is common in most communities, many houses in Oshkosh have changed over time. Perhaps a porch was added or an existing one enclosed, or an addition tacked onto the rear to serve as a mudroom or an extra bedroom to accommodate a growing family. These additive elements serve as crucial tools in adapting a home to its residents’ needs. 2 Addition Roof + Front Porch 4 Addition Roof + Garage + Attached 3 Addition Roof + Dormer 1 Base Roof + Plan + Floors Oshkosh House Design Book 5150 Combinations Many houses in Oshkosh are combinations of different architectural components. Housing can thus be imagined as a series of combinations of basic modules: House = floorplans + roof + front porch + dormer. Or House = floorplans + roof + side garage + dormer. And so on. ROOF | Main House + Additions ADDITIONS | Porch + Dormer + Garage 665 GROVE ST925 WAUGOO AVE825 WINNEBAGO AVE Oshkosh House Design Book 5352 A An example of what might happen when a gambrel roof, a front porch, a garage, and a dormer are tacked onto a basic rectangular volume. 665 Grove St | 925 Waugoo Ave | 825 Winnebago Ave ROOF | Main House + Additions ADDITIONS | Porch + Dormer + Garage 203 ROSALIA ST209 ROSALIA ST815 ROSALIA ST Oshkosh House Design Book 5554 Here, the base rectangular module is combined with a gable roof, a front porch, dormers, a side porch, and a rear addition. B 203 Rosalia St | 209 Rosalia St | 815 Rosalia St Oshkosh House Design Book 5756 Typical Facade Materials Houses in Oshkosh use a variety of facade materials. The most common types are vinyl and wood siding. Other materials include brick, (faux) stone veneer, and plaster. Vinyl Stone Veneer Plaster Wood Brick1 4 5 2 3 TEXTURAL VARIATION 3D EMBELLISHMENTS Oshkosh House Design Book 5958 Ornamentation Houses in Oshkosh feature a variety of ornamentation types. One type is textural, where facade materials vary in color, form, or material to add depth and diversity to the house’s exterior. A wooden clapboard house, for example, might have siding in multiple colors and shapes to accentuate certain parts of the building. Another type of ornamentation is three-dimensional embellishments, such as carvings, brackets, scalloped edges, and protruding volumes. Such adornments are often found around windows and on archways, porches, and gables; even window frames themselves can serve as a form of ornamentation. These elements add further complexity to the house. Variations in color and/or material add complexity and differentiate between house elements Facades and openings enhanced by decorative features like scallops, brackets, and carvings 1 2 3 4 1 2 3 4 Concept Design Oshkosh House Design Book 63 Objective The design method presented here is informed by the history and characteristics—form, materiality, and ornamentation—of the existing building stock in Oshkosh. This approach can be broken down into a few categories: This book provides designs for a single-family house, a duplex, and an accessory dwelling unit that can be combined into multiple configurations. In addition to providing a singular house design, strategies for creating multiple designs across Oshkosh and beyond are also developed. The house designs are founded upon three base units that address issues of context, livability, and affordability while also being contemporary. 1. One Design, Many Variations 3. Adaptability + Diversity through Additive Parts 2. Economy through Standardization Oshkosh House Design Book 6564 It’s all about the base module. By starting with an efficient base module, any number of components can then be added to create a variety of houses. Want a third bed + bath? Add a rear addition. Want more upper-floor space? Add a dormer. 1 STO R Y B-1 B-1.5 B-2 1.5 ST O R I E S 2 STO R I E S B-1 B-1.5 B-2 Oshkosh House Design Book 6766 BASE MODULE FORMS This proposal works with three different base modules: a 1-story, a 1.5-story, and a 2-story. HOUSE FRONT PORCH SI D E PO R C H All base module floorplans offer a 2-bedroom, 1 - 1.5 bath configuration ranging from 900 to 1200 SF. The interior spaces are economical yet functional, providing a minimal footprint through optimizing circulation. BASE MODULE PLANS Roof 1 2 3 4 Dormer Porch RoomsRoof 1 2 3 4 Dormer Porch Rooms Oshkosh House Design Book 6968 A variety of roofs, dormers, porches, and room additions can be combined with a base module to allow for multiple permutations of single-family and duplex homes. ADAPTIVE COMPONENTS The adaptive components provide detail, variety, and opportunities for expanding the base program. Contextual Guidelines Oshkosh House Design Book 7372 An explanation of the conditions that have served as guides in developing these housing prototypes. Aligns with setbacks Compact Footprint Room for growth Street BASE MODULE X X X Y Multiple Orientations Street BASE MODULE X X X Y Oshkosh House Design Book 7574 Right sizing is about making the floorplan compact—not only to reduce up-front costs, but also to allow for multiple orientations, if desired, on the site. RIGHT SIZING It is important to be consistent with the width and facade proportions of surrounding houses. The depth of the building can vary, as depth proportions are not always visible from the street. CONSISTENT WITH CONTEXT: FACADE + WIDTH Siting matters. Building layouts conform to adjacent neighbors. BASE MODULE 30’–35’20’–25’20’–25’ Oshkosh House Design Book 7776 Reflect the context by matching the height of neighboring houses. Oshkosh House Design Book 7978 Additive Elements Additive elements provide detail, variety, and programmatic opportunities, especially as needs change over time. They can help the base module blend in with its context while also adding unique characteristics to the building. Side Porch Dormer Additional Room Side Porch Enclosed Front Porch Carefully chosen additive elements can help a base module blend in with its context while also offering something unique. X X CLT METAL FRAMING SIP PANELS PREFABRICATED Oshkosh House Design Book 8180 While basements are common in Oshkosh, they can be expensive to build. New houses can promote an alternative to traditional basements by using frost- proof slab foundations. These shallow foundations can be raised slightly, maintaining the contextual relationship to the ground. RELATIONSHIP TO GROUND Shallow Foundation Basement Maintain legibility and promote adaptability & affordability regardless of construction type. The virtue of these housing models is that different construction types —from CLT to SIP panels to metal framing— can be applied to them. They are highly adaptable to different building technologies, which helps save costs and allows for experimentation. COMPATIBLE CONSTRUCTION TYPE House Plans ROOF 1 STORY 1.5 STORY 2 STORY 40’ ±28’ 25’ 20’ ±28’ ±25’ ±21’ 25’ ROOF 1 STORY 1 STOR Y 1.5 STO R Y 2 STOR Y 40’ ±28’ 25’ 20’ Oshkosh House Design Book 8584 The three base modules are compact units that are 25’ wide. B-1, or the 1-story module, has a long footprint and is a little taller than typical 1-story homes. B-1.5, or the 1.5-story module, is a two- story structure with a half-story as its second floor. This module can be useful in scenarios in which a two-story option is desired in a context where full-height two-story homes are less common. B-2, or the 2-story module, has the same layout as B-1.5, but is taller. The base module is infinitely adaptable. Oshkosh House Design Book 8786 Index of Permutations The following are examples of resolutions of building types using each of the modules developed: B-1, B-1.5, and B-2, plus an ADU. Note that there is no one solution—the virtue of this approach is that the base modules can be configured with additive elements in a number of ways. The examples shown here are just one series of possibilities. All house designs will incorporate best practices for energy efficiency, durability, and comfort, as laid out in the Focus on Energy New Homes – 2024 Builder Program Guide. Prototype 1 1-STORY (B-1) Prototype 3.1 DUPLEX 1 (B-2 + B-1.5) Prototype 3.4 DUPLEX 4 (B-2 + B-1)HOUSE + ADU Prototype 2.1 1.5-STORY (B-1.5) Prototype 3.2 DUPLEX 2 (B-1 + B-2) Prototype 2.2 2-STORY (B-2) Prototype 3.3 DUPLEX 3 (B-2 + B-2) Prototype 4.1 & 4.2 B-1 Stre Side-Rear Addition Front Addition Stre Oshkosh House Design Book 8988 SR-9 Zoning B-1 plus a front and side-rear addition on a 50’ X 120’ lot. Prototype 1 1-Story Single-Family House Addition UP Addition Porch DN 120’ 15 ’ f ron t y a rd 25’ rea r y a rd 50’ 5’ s i d e y a rd PARKING Oshkosh House Design Book 9190 Prototype 1 1-Story Single-Family House Basement Floor Plan First Floor Plan Oshkosh House Design Book 9392 Prototype 1 1-Story Single-Family House Street Elevation Oshkosh House Design Book 9594 Other Possible Permutations of B-1 1-Story Single-Family House B-1.5 Rear Addition Front Addition Dormers Stre Oshkosh House Design Book 9796 SR-9 Zoning B-1.5 plus a front and rear addition and two dormers on a 50’ X 120’ lot. Prototype 2.1 1.5-Story Single-Family House Addition UP Porch 120’ 15 ’ f ron t y a rd 25’ rea r y a rd 50’ 5’ s i d e y a rd Addition Porch DN UP PARKING Oshkosh House Design Book 9998 Prototype 2.1 1.5-Story Single-Family House Basement Floor Plan First Floor Plan Oshkosh House Design Book 101100 Prototype 2.1 1.5-Story Single-Family House Second Floor Plan Addition Porch DN Oshkosh House Design Book 103102 Prototype 2.1 1.5-Story Single-Family House Street Elevation Oshkosh House Design Book 105104 Other Possible Permutations of B-1.5 1.5-Story Single-Family House B-2 Rear Addition Front Addition Stre Oshkosh House Design Book 107106 SR-9 Zoning B-2 with a front and rear addition on a 50’ X 120’ lot. Prototype 2.2 2-Story Single-Family House Addition UP 15 ’ f ron t y a rd 120’ 50’ 25’ rea r y a rd Addition Porch DN UP Porch PARKING 5’ s i d e y a rd Oshkosh House Design Book 109108 Prototype 2.2 2-Story Single-Family House Basement Floor Plan First Floor Plan Addition Porch DN Oshkosh House Design Book 111110 Prototype 2.2 2-Story Single-Family House Second Floor Plan Oshkosh House Design Book 113112 Prototype 2.2 2-Story Single-Family House Street Elevation Oshkosh House Design Book 115114 Other Possible Permutations of B-2 2-Story Single-Family House Oshkosh House Design Book 117116 TR-10 Zoning B-2 and B-1.5 plus a front and rear addition on a 50’ X 120’ lot. Prototype 3.1 Duplex 1 B-1.5 B-2 Rear Addition Stre Front Addition Addition B-2 B-1.5 25’ f ron t y a rd 120’ 50’ 25’ rea r y a rd Addition Addition Addition 7’ s i d e y a rd B-2 B-1.5 PARKING UP UP DN Addition Oshkosh House Design Book 119118 Prototype 3.1 Duplex 1 Crawlspace Floor Plan First Floor Plan Addition Addition DN DN Addition B-2 B-1.5 Addition Oshkosh House Design Book 121120 Prototype 3.1 Duplex 1 Second Floor Plan Oshkosh House Design Book 123122 Prototype 3.1 Duplex 1 Street Elevation Oshkosh House Design Book 125124 Other Possible Permutations of B-2 + B-1.5 Duplex 1 B-1 B-2 Rear Addition Front Addition Stre Side Addition Oshkosh House Design Book 127126 TR-10 Zoning B-1 and B-2 plus front, side, and rear additions on a 60’ X 120’ lot. Prototype 3.2 Duplex 2 Addition B-2 B-1 UP UP Addition Basement Floor Plan UP 25’ f ron t y a rd 120’ 60’ 25’ rea r y a rd 7’ s i d e y a rd DN DN B-2 B-1 PARKING Addition Addition Porch First Floor Plan Oshkosh House Design Book 129128 Prototype 3.2 Duplex 2 DN Addition B-2 B-1 Addition Porch Oshkosh House Design Book 131130 Prototype 3.2 Duplex 2 Second Floor Plan Oshkosh House Design Book 133132 Prototype 3.2 Duplex 2 Street Elevation Oshkosh House Design Book 135134 Other Possible Permutations of B-2 + B-1 Duplex 2 Oshkosh House Design Book 137136 TR-10 Zoning B-2 and B-2 plus front and rear additions on an 80’ X 120’ lot. Prototype 3.3 Duplex 3 B-2 Rear Addition Front AdditionStre UP UP Basement Floor Plan 25’ f ron t y a rd 120’ 80’ 25’ rea r y a rd 7’ s i d e y a rd B-2 B-2 PARKING AdditionAddition Potential location of future garage Porch UP DNDN UP First Floor Plan Oshkosh House Design Book 139138 Prototype 3.3 Duplex 3 DNDN Oshkosh House Design Book 141140 Prototype 3.3 Duplex 3 Second Floor Plan Oshkosh House Design Book 143142 Prototype 3.3 Duplex 3 Street Elevation Oshkosh House Design Book 145144 Other Possible Permutations of B-2 + B-2 Duplex 3 Oshkosh House Design Book 147146 TR-10 Zoning B-2 and B-1 plus front and rear additions on an 80’ X 120’ lot. Prototype 3.4 Duplex 4 B-1 B-2 Rear Addition Front Addition Stre First Floor Plan B-2 B-1 Addition Addition 25’ f ron t y a rd 120’ 80’ 25’ rea r y a rd 7’ s i d e y a rd B-2 B-1 PARKING Addition Addition Potential location of future garage Porch DN DN UP 3’ Oshkosh House Design Book 149148 Prototype 3.4 Duplex 4 Crawlspace Floor Plan B-2 B-1 Addition Addition Porch DN Oshkosh House Design Book 151150 Prototype 3.4 Duplex 4 Second Floor Plan Oshkosh House Design Book 153152 Prototype 3.4 Duplex 4 Street Elevation Oshkosh House Design Book 155154 Other Possible Permutations of B-2 + B-1 Duplex 4 B-ADU GARA G E Dormer Front Addition Stre Oshkosh House Design Book 157156 SR-9 Zoning TR-10 Zoning ADU on second floor of garage plus dormer and front addition. Prototype 4.1 & 4.2 Variations of Above with ADU 15 ’ f ron t y a rd 3’ 120’ 50’ 25’ rea r y a rd 5’ s i d e y a rd GARAGE PRIMARY UNIT B-ADU UP First Floor Plan Oshkosh House Design Book 159158 Prototype 4.1 & 4.2 House + ADU PRIMARY UNIT Addition B-ADU DN DN PRIMARY UNIT Addition B-ADU DN Oshkosh House Design Book 161160 Prototype 4.1 & 4.2 House + ADU Second Floor Plan – Option 1 (1-Bedroom)Second Floor Plan – Option 2 (Studio) Front Elevation Oshkosh House Design Book 163162 Prototype 4.1 & 4.2 House + ADU PRIMARY UNIT Oshkosh House Design Book 165164 Other Possible Permutations of ADU House + ADU