Design Guidelines On Residential Units

brief introduction on residential units
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SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-1 8.0 RESIDENTIAL DESIGN GUIDELINES These design guidelines address both the residential units in Planning Area 2 (The Town Center Core above retail and at free standing) as well as the residential products contemplated within Planning Area 3 neighborhood.. The information in this Section is intended to supplement the requirements of Section 6 - Special Design Guidelines for the Town Center Core. The overall intent of the Residential Design Guidelines is: 1) to ensure that the form and scale of the building architecture reinforces the mixed use, urban character of the streets and parks and, 2) to encourage a variety of building forms that provide human scale for residents and pedestrians. 8.1 RESIDENTIAL UNIT TYPES It is envisioned that a variety of multi-unit housing types will be included within Planning Area 2 and 3 neighborhoods. The blocks containing residential uses (above retail and at ground level) have been configured to accommodate a wide variety of residential building types and products within each Planning Area including: 8-2 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES Planning Area 2 - Town Center Core: A. Flex Apartment Over Retail B. High Density Residential Flats C. Parkside Cluster Townhomes / Duplexes D. Attached Row Homes (2-3 per bulding) E. High Density Attached (6 unit flats) F. Townhome with Penthouse Attached (6 unit building) Planning Area 3 - South Neighborhood: G. Cottages H. Villas I. Urban Villas J. Townhomes K. Live / Work Townhomes These residential products are described in detail in Section 8.10 8.2 ARCHITECTURAL CHARACTER AND NEIGHBORHOOD COMPATIBILITY A. Arrange the residential buildings so that the common open areas, circulation paths and points of common access can be easily observed by residents to create comfortable and safe living environments. B. Variety within the Town Center Core will be ensured by combining different residential types, elevations, materials, and colors to foster individuality, improve the sense of community, & meet market demands. This variety is encouraged on a block-by-block & single block basis. C. An individualized sense of home will be created by designing and siting multi-unit residential buildings to maximize the sense of variety by incorporating porches close to the street and variety of expression (form, materials, etc.) between adjacent units. SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-3 8.3 BUILDING HEIGHTS, MASSING AND SCALE A. All multi-unit residential buildings shall be designed to provide human scale, interest and variety with an emphasis placed on reinforcing the vertical bay spacing and proportioning, creating “row- house” like elevations that reduce the appearance of large, long, horizontal buildings. In order to further reinforce a human scale, buildings should incorporate elements of the following architectural features: a distinct first level often defined by strong horizontal elements such as awnings or façade treatments; special accent materials and design details on first floor facades; transparent windows and doors; textured materials with human scaled proportions; and outdoor and entrance areas that form a relationship with abutting pedestrian areas. B. Buildings shall generally relate in scale and design features to the surrounding buildings, showing respect for the local context. Buildings should incorporate such features as: maintaining the building scale or subtly graduating changes of adjacent buildings; maintaining front yard setbacks at the build-to line; establishing base courses; the use of front porches on residential buildings; repeating cornice lines in buildings of the same height; extending horizontal lines of fenestration; and echoing architectural styles and details, design themes, building material and colors used in surrounding buildings. C. Building fronts and main entrances shall orient to the street(s). Residential entrances shall be clearly defined and emphasized. Ground floor units should have exterior entries whenever possible. In order for building entrances to be clearly defined, utilize such features as awnings, recessed door openings, columns and pilasters, fanlights and sidelights, porches, landscape treatments and 8-4 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES other similar architectural elements. D. The design of all buildings shall avoid monolithic, unarticulated shapes and shall include articulated surfaces. To this end, the following techniques are appropriate: changes in color, graphical patterning, texture or material; projections, recesses and reveals; windows and doorways; arcades and pergolas; towers; gable projections; and horizontal and vertical breaks are recommended. E. The architectural features, materials and the articulation of a façade shall be continued on all sides visible from a public street, including alleys, with the highest concentrated of craft and detail reserved for the ground floor and public street facing facades. F. Entries may be raised along some elevations (particularly along the row home products) to provide a sense of security, establish a front porch, and allow ventilation to the garage level below. G. The front of the building should have the greatest articulation, craft and detail followed by the sides and then the rear. H. While the three-four story residential massing is encouraged within the Town Center Core, building uniformity (unarticulated three or four story massing) is discouraged. Buildings that mix three, four and five story elevations are preferred. The building mass of the elevation can be reduced by offsetting residential units and varying building setbacks, heights and materials to promote smaller, individualized expression within the collective form. I. The maximum height of residential buildings within the Planning Area 2 - Core Area is specified in Chapter 6. Maximum height in Planning Area 3 - South District is per Annexation Agreement not to exceed 75 feet. SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-5 8.4 ROOF FORMS AND MATERIALS A. Roof forms should be designed in ways and/ or used in combinations to break up large, continuous building forms in multiple dwelling structures. Where flat roofs are used, other techniques to provide scale and interest should be used to refine large, continuous building forms. Rooftop terraces, balconies, etc. are encouraged. Long unbroken ridgelines are strongly discouraged. B. Generally, for structures lower than 35 feet high, gable or hip roofs are preferred for the primary roof form. The primary gable roof slope should fall within a 5:12 – 12:12 range to allow for a variety of expression within the residential product mix. Secondary structures such as porch roofs, roofs over bay extensions, bay windows, etc. may include other roof forms such as shed roofs and hip roofs in combination with gable roofs. However, secondary roofs should be consistent or complementary with the primary roof form. Flat roofs may be also appropriate for small areas. Rooftop terraces, balconies, etc. are encouraged within flat roof portions. C. For multiple dwelling structures, shed roofs and roofs with unequal slopes should not be used for the primary roof form, but are allowed for special roof elements. D. Dormer roof forms should generally match the form or pitch of the primary roof or significant secondary roof form. E. On larger multiple dwelling structures, where large, shared rooftop equipment is contemplated, equipment shall be screened from public view. 8.5 EXTERIOR MATERIALS, COLOR AND DESIGN ELEMENTS: A. Durable materials shall be used that will be long 8-6 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES lasting with reduced maintenance costs. B. Maximize the opportunities for natural lighting through the use of a variety of window sizes and shapes on each building. Vertical window proportions are preferred. Incorporate mullion patterns to add detail. Ribbon and glass curtain walls are to be avoided in residential buildings and shall be incorporated as accent, feature elements where appropriate. C. Maximize privacy between units by providing separate entries, and acoustic separation in party walls and floors. D. Special emphasis shall be placed at the ground floor by introducing durable, grounding and solid materials to convey the base. E. Primary exterior material selections shall be harmonious with the Town Center Core palette and introduce warm, regional materials. 8.6 GARAGES AND SERVICE AREAS A. Garages and service areas should be integrated into the primary building form and screened from on-site residential areas to the greatest degree possible. B. Garages under buildings should provide open ventilation and sunlight where possible. In instances where tuck-under parking is provided, natural ventilated parking is allowed so long as automobiles are screened from public view. Landscape screening is acceptable. C. Buildings within each block should share service areas whenever possible. 8.7 TRASH AND EXTERIOR UTILITIES EQUIPMENT: A. Common trash receptacles shall be used and SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-7 should be centrally located to the residential units they serve, yet inconspicuous and easily maintained. Preferred locations include the ends of parking courts, along interior secondary access routes and private drives, and away from building entrances. Receptacles shall be fully enclosed within 6 foot walls and solid, self-closing gates. Enclosures shall be constructed of materials compatible to the design of the adjacent buildings and softened with landscaping. B. Consider the use of trash compactors. C. To maintain the visual integrity and residential character of neighborhoods, electric and gas meters requiring external location should be grouped and located out of direct view from adjacent streets. Such meters can be screened by cabinets, wing walls, fencing and/or vegetation. 8.8 COMMON AREA ACCESSORY STRUCTURES: A. Accessory structures should present a uniform and consistent design statement compatible with the architecture styles of individual developments. Structures such as kiosks, shelters, and centralized mail box structures, are encouraged as neighborhood focal points. B. Such structures should be centrally located within the neighborhood, included within common open space areas and neighborhood greens, and highly visible and accessible to residents. C. Such structures shall be compatible with other streetscape elements and the architectural style of the neighborhood. D. Clustered mail boxes are strongly encouraged within each block or building and should be centrally located, offering easy pedestrian access to all residents. 8-8 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES E. If clustered mailboxes are not located within an enclosed building or area within the block, the free-standing structure(s) shall be architecturally compatible with the character of the development in terms of scale, form, materials, exterior finishes, and roofing. Attractive message boards of information kiosks located in conjunction with such structures enhance the community role of the mailbox clusters. 8.9 NEIGHBORHOOD AND PRIVATE/SEMI- PRIVATE OPEN SPACE WITHIN BLOCKS: A. Provide each residential unit with at least one private outdoor area such as a yard, porch, patio, or balcony. Balconies should have a minimum 5 foot depth. Juliet balconies are allowed with the Town Center Core. B. Each block should encourage usable and meaningful semi-private open space in courtyard- like spaces. C. Special indoor and outdoor amenities such as community and event rooms, and gardens should be considered with each type to differentiate the products for the expected residents. 8.10 RESIDENTIAL PRODUCTS: Residential products are offered in a variety of configurations and amenities throughout Planning Areas 2 and 3. In some cases, these residences are more urban in character (smaller flat type units overlooking Town Center). Other products more closely resemble the single family home (park side cluster home /urban villas and townhomes). In Planning Area 03, single family detached cottages define the character of the neighborhood. In all cases, priority is focused on establishing a welcoming, safe and pedestrian friendly community and a diversity and variety of product SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-9 options and individual choice. The following overview highlights the contemplated mix of residential products (type, sizes, configurations, etc.). Planning Area 02 A. FLEX APARTMENT OVER RETAIL: Unit Sizes: Range: 900 s.f. - 1,100 s.f. Parking: Shared Structured Parking From Midblock Unit Dimensions: 25-28’ deep x 35-40’ wide Description: The Flex Apartment Over Retail product will provide a high density, urban living residential model. Envisioned to provide a variety of flexible configurations, these units will be arranged around a central corridor and be supported with centralized shared structured parking (above or below grade). A variety of unit types ranging from “micro-apartments” to one and two bedroom high efficiencies will provide a diverse mix within the vibrant Village Core. A range of projecting balconies and “juliet” balconies will animate the facades and provide diversity of expression. Stair entrances will be provided along the edges and a central main elevator entry located central to the buildings. Massing within this product will be limited to four stories above retail podium. In some cases a stepped back 5th floor will animate the building form and add variety to the silhouette. Building massing will be regulated to limit unarticulated horizontal massing, in favor of stepped façades. Open space will be provided within shared ground floor courtyards, internal to block. Setbacks: Front & Side: 0’-10’ (flr’s 2-4) / 10’-20’ (flr 5). Balconies may project up to property line/ limited to 6’ projection from bldg face. Rear: 0’-5’ 8-10 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES B. HIGH DENSITY RESIDENTIAL FLATS: Unit Sizes: Range: 1,100 s.f. – 1,600 s.f. Parking: Shared Structured Parking accessed from midblock. Unit Dimensions: 25-28’ deep x 45-58’ wide Description: This residential product will provide for a high density urban configuration. Envisioned as a multi-story condominium configuration, this product will appeal to the urban dweller. These units will gain access to individual units through a common elevator lobby and through a common double loaded corridor. Unit sizes will vary from larger one-bedroom through small three-bedroom units. Building massing will be limited to 5 stories and be located along energetic sub-areas within the Village Core. Building massing will be designed to hold the street edge at floors one – three and provide the desired density within the central core. In some cases, 5th story loft units will animate the skyline and provide a stepped back massing. Balconies within this product type will be a combination of projected and subtracted forms from the primary massing. Building entrances will be articulated at the ground floor with shared elevator lobby configurations fronting the public way. Parking will be accommodated with on-site structured (above and/ or below grade) configurations. Outdoor space will be shared by residents within centralized plazas and courtyards, internal to blocks. Setbacks: Front & Side: 0’-10’ (flr’s 2-4) / 10’-20’ (floor 5). Balconies may project up to property line / limited to 6’ projection from building face. Rear: 0’-5’ SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-11 C. PARKSIDE CLUSTER TOWNHOMES / DUPLEXES: Unit Sizes: Range: 1,750 s.f. - 2,500 s.f. Parking: Shared autocourt access from Street One with self park, tuckunder garage Unit Dimensions: 25’wide x 26’-40’ deep Description: This product type is envisioned as two - unit duplex Townhomes arranged around a central auto entry court. Leveraging the natural beauty of the adjacent open space and views, these units will provide up to four bedrooms and private exterior courtyards and terraces. Parking within this product type will provide a 2-car side- by-side garage per unit accessed from shared auto-court. Building massing will be limited to three stories with accessible rooftop terraces & small (up to 15% of floor area) fourth floor amenities allowed. Individual unit articulation is envisioned through material differentiation, building siting and individual unit entrances to encourage a more independent SFR impression. Open space will be a combination of shared entry courts and private, individualized exterior spaces. Setbacks: Front: 10’ min. Side: 5’ min. (25’ min. separation between buildings) Rear: Depends on utility easements / floodplain limitations 8-12 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES D. ATTACHED ROWHOME (2-3 Units per building): Unit Sizes: Range: 1,500 s.f. - 1,800 s.f. plus 250 s.f. ground floor use. Parking: Self Park, tuckunder accessed from shared internal driveway Unit Dimensions: 30-35’ deep x 25-28’ wide Description: This product type is envisioned as a semi-detached row-home. The ground floor will hold the street edge and provide a welcoming first impression. Each unit will provide an individual front door and porch as well as approximately 250 s.f. of ground floor home office / bedroom, etc. and a self-park, tuck-under configuration accessed from internal driveways within the block. In some cases the upper floors will detach providing three individual vertical unit articulations. This configuration will allow for windows, porches and balconies to be introduced at the upper floors of each unit. In other cases, the upper floors may remain attached to present a denser, urban edge along higher density sub-areas. Building massing will be limited to three story primary massing with up to 15% of floor area allowable for a fourth floor program expansion. Roof terraces, balconies are allowed. Street fronting upper floor balconies are encouraged and may project within 5’ of front property line. Setbacks: Front: 0’ -10’ Side yard: 0’-10’ (min. 15’ separation between buildings) Rear: (garage access: 30’ between buildings) SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-13 E. HIGH DENSITY ATTACHED (6-UNIT FLATS): Unit Sizes: Range: 1,250 s.f. – 1,600 s.f. Parking: Self Park, tuckunder accessed from shared internal driveway Unit Dimensions: 40’ deep x 35’ wide Description: This product type is envisioned as a medium-high density, single level living product concentrated close to the Village Core. Individual units are accessed through a central shared ground floor, street fronting elevator lobby providing access to a total of six one + den and two bedroom flats (two per floor). Parking is accessed from a secured ground floor self-park, tuck under configuration with internal driveways within the block. Building massing is limited to four stories (three residential floors above ground floor parking) plus up to 33% of floor area for fifth floor loft. Individual unit balconies and terraces are encouraged within this product. The overall character of the massing will be rendered as a single primary mass with stacking units. Top floor articulation will be presented with a variety of roof forms, balconies and terraces. Outdoor space will be shared by residents within this block configuration through internalized ground floor paseos and courtyards. Setbacks: Front: 0’-10’ Side yard: 0’- 5’ (min. 10’ separation between buildings) Rear: (garage access: 30’ between buildings) 8-14 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES F. TOWNHOME WITH PENTHOUSE ATTACHED (6-UNIT/BUILDING ): Unit Sizes: Townhome: 2,100 s.f. (floors 2-3) (4 units), Penthouse: 1,950s.f. (floor 4 + mezzanine / loft) (2 units) Parking: Self Park, tuckunder accessed from shared internal driveway Unit Dimensions: 22’ wide x 45’ deep Description: This product type provides for slightly larger units with four (4) two-story, three bedrooms + den Townhomes and two (2) top floor, three bedroom penthouses + loft to meet the needs of homeowners who prefer luxurious living on a single level. Parking is accommodated with a self-park, tuck-under configuration accessed from internal driveways. Townhome and penthouse access is provided by individual stairs from garage and/ or (private or shared) elevator access. Large private decks are provided (60-90sf) for each Townhome unit. Building massing is envisioned to be rendered as a singular form for the lower levels with the penthouses detaching from the lower floor massing to be individually articulated. Private roof terraces, accessed from top floor loft are encouraged. Open space is shared between buildings through generous mid-block greenbelts, courtyards and pedestrian amenities. Setbacks: Front: 0’-10’ Side yard: 0’- 5’ (min. 20’ separation between buildings) Rear: (garage access: 30’ between buildings) SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-15 Planning Area 03 G. COTTAGE: Unit Sizes: 1,200 s.f. - 2,500 s.f. Parking: Parking is provided at the alley in the form of private garages. Unit Dimensions: 18-35’ wide x varying depths Description: Cottages are 1.5 and 2.5 story, single-family detached buildings. Half-stories refer to lower plate heights with dormers and scissor trusses on the upper stories and are very common in the region. These houses usually have a narrow, deep lots and attached garages with alley access. Cottages should be designed with an open side and a closed side in order to maximize the usability of side yards. Cottages will determine the character of the streetscape in the majority of Planning Area 03. Providing large porches will be very effective in creating inviting, walkable streets. Setbacks: Front: 4’ min. to porch, 8’ min. to building. Side yards for principle buildings: 3’ min., 8’ min. total of both sides, 8’ min. separation between cottages. Sides for garages: 0’ or 3’ min. (i.e., either attached garages, or 6’ min. between garages) Rear: 4’ min. Page 3 4 6 7 6 BROADWAY, BOULDER, CO 8 0 3 0 4 / 3 0 3 . 4 4 3 . 7 8 7 6 / WWW. P EL- ONA. COM T C M LY C M , FC M M l E FE L L G l C , lC F l L T CM A F A M vCLFF LYCM AFC¬lTECTG AML FEL·CMA AFC¬lTECTG AML LFEAMlGTG SUPERIOR, COLORADO S I T E P L A N EX P L O R AT I O N S , S U P E R I O R TO W N CE N T E R MAY 13, 2013 BLOCK FACE WITH COTTAGES 8-16 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES H. VILLAS: Unit Sizes: 1,500 s.f. – 2,400 s.f. Parking: Parking is provided at the alley in the form of private garages. Unit Dimensions: 18’-30’ wide x 50’ deep Description: The larger Villas are compact residential buildings that can be located on shallow lots. Typically, the main living space is located on the second floor above the garage. Urban Villas can be arranged in a variety of two and three unit buildings, with small gaps between, which form appealing compositions around paseos and green courts. Second and third-story setbacks are encouraged. Front porches and second-story balconies provide interest and variety. Setbacks: Front, on a paseo or green: 0’ min. Front, on a street: 4’ min. Side yard: 0’ or 3’ min. (i.e. either attached or 6’ in between buildings) Rear: Depends on utility easements, but probably 4’ min. SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-17 I. URBAN VILLAS: Unit Sizes: 1,200 s.f. – 1,900 s.f. Parking: Parking is provided at the alley in the form of private garages. Unit Dimensions: 18’-30’ wide x 40’ deep Description: The smaller Urban Villas are compact residential buildings that can be located on shallow lots. Typically, the main living space is located on the second floor above the garage. Urban Villas can be arranged in a variety of two and three unit buildings, with small gaps between, which form appealing compositions around paseos and green courts. Second and third-story setbacks are encouraged. Front porches and second-story balconies provide interest and variety. Setbacks: Front, on a paseo or green: 0’ min. Front, on a street: 4’ min. Side yard: 0’ or 3’ min. (i.e. either attached or 6’ in between buildings) Rear: Depends on utility easements, but probably 4’ min. 8-18 SUPERIOR TOWN CENTER - DESIGN GUIDELINES SUPERIOR TOWN CENTER - DESIGN GUIDELINES J. TOWNHOMES: Unit Sizes: Range: 1,400 s.f. – 2,200 s.f. Parking: Parking is provided at the alley in the form of private garages. Unit Dimensions: 20’-24’ wide x varying depths Description: Townhomes are 2- to 3-story attached dwelling units. They create strong building presence along the street. In Planning Area 03, townhomes will provide a transition from the more urban building products in the core to the smaller-scale residential cottages. Therefore, the use of porches and articulation of individual units will be important. Access to the units is provided via attached garages along the alleys. Setbacks: Front: 4’ min. to porch, 8’ min. to building. Side yard: 0’ or 5’ min. (10’ min. separation between buildings at gaps) Rear: 4’ min. Page 2 4 6 7 6 BROADWAY, BOULDER, CO 8 0 3 0 4 / 3 0 3 . 4 4 3 . 7 8 7 6 / WWW. P EL- ONA. COM T C M LY C M , FC M M l E FE L L G l C , lC F l L T CM A F A M vCLFF LYCM AFC¬lTECTG AML FEL·CMA AFC¬lTECTG AML LFEAMlGTG SUPERIOR, COLORADO S I T E P L A N EX P L O R AT I O N S , S U P E R I O R TO W N CE N T E R MAY 13, 2013 SPECIAL DESIGN GUIDELINES FOR RESIDENTIAL DISTRICT 8.0 8-19 K. LIVE / WORK TOWNHOMES: Unit Sizes: Range: 1,600 s.f. – 2,000 s.f. Parking: Parking is provided at the alley in the form of private garages. Unit Dimensions: 20’-24’ wide x varying depths Description: Located along the Village Green, live/work townhomes are compact, attached buildings with flexible office/commercial space on the ground floor and residential units on the second and third stories. Tuck-under garages are located along the alley, with separate entrances for residential and business units. Ground floor office/commercial space should be designed in such a way that units can be consolidated into larger suites dependent on the market needs. Setbacks: Front: 0’ min. Side yard: 0’ or 5’ min. (10’ min. separation between buildings at gaps) Rear: 4’ min. Page 1 4 6 7 6 BROADWAY, BOULDER, CO 8 0 3 0 4 / 3 0 3 . 4 4 3 . 7 8 7 6 / WWW. P EL- ONA. COM T C M LY C M , FC M M l E FE L L G l C , lC F l L T CM A F A M vCLFF LYCM AFC¬lTECTG AML FEL·CMA AFC¬lTECTG AML LFEAMlGTG SUPERIOR, COLORADO S I T E P L A N EX P L O R AT I O N S , S U P E R I O R TO W N CE N T E R MAY 13, 2013 URBAN VILLAS LIVE/WORK TOWNHOMES REC CENTER