# 303 Charles Morris Terrace - First-floor architect brief

Revision 02 | 2026-09-10 | Concept study, not permit or construction drawings

## Owner intent / 业主要求

Convert the existing family room into a private bedroom. No floor excavation. Keep the existing toilet and vanity in their current positions. Keep the half bath accessed from the hallway, with its outward-swinging door. Retain the existing separation between the small coat closet and the garage. Study a taller bedroom door for an owner who is 1.94 m tall, within the existing structural opening.

主方案只封墙装门，保留现有半卫。门上方完全封合。原梁柱、马桶、洗脸台和车库分隔保留。96 in 门是待验证选项，不能依据扫描尺寸下单或施工。

## Basis of information

User-provided IMG_7054.MOV continuous video, IMG_7055-7068 photographs, magicplan My New Project - 1st Floor.usdz, and owner corrections. The scan was rescaled x10 using an estimated ceiling height near 2.9 m. Plan measurements have not been independently field verified. There is no original approved plan, structural survey, concealed-service map, measured window opening or HOA rule set in this package.

## Primary scheme A

- Infill the approximately 2.004 m wide x 2.535 m high opening with a non-load-bearing partition and inward-opening bedroom door; finish above the door on both sides.
- Compare nominal 80 in and 96 in door leaves, each 36 in wide. Assumed rough openings are 0.9652 x 2.0828 m and 0.9652 x 2.4892 m. These are fit-study assumptions, not verified manufacturer requirements.
- The 96 in study leaves only 45.8 mm above its assumed rough opening under the scanned original head. Verify real clear height, completed floor, frame, head connection and casing. Do not cut or raise the existing structural header based on this study.
- Candidate wall: nominal 38 x 89 mm timber, approximately 76 mm mineral wool, nominal 12.7 mm gypsum board each side and finish. No structural header size, fastener schedule, slab anchors, penetration depths or fire-resistance rating is specified.
- Bed group shifted 80 mm toward cabinet and 120 mm toward head wall to avoid the modeled 36 in door sweep. Rug adjusted to stay clear; field clearance must be confirmed. Keep the existing long cabinet. Queen mattress 1.524 x 2.032 m; frame 1.60 x 2.12 m. Side gaps about 0.60/0.79 m are provisional and not code clearance approvals.
- Preserve toilet, vanity, bathroom door position and confirmed outward swing.
- Correct the scan's missing closet-to-garage wall. This is existing construction, not new work.
- Stair guard is open only at the bottom few treads; the approximate fifth-tread transition is not a surveyed dimension.
- The narrow rear-wall scan anomaly is provisionally closed; verify whether it exists before counting any work.

## Alternatives

Double hinged doors or a fixed panel and sliding door are qualitative alternatives for flexibility. Product selection, finished clear openings, track conditions, privacy and prices remain open.

## Cost planning

Local high-door materials: quoted-line arithmetic $900.13 + estimated allowances $205-410 = $1,105.13-1,310.13 before tax, delivery and labor. Budget approximately $1,100-1,350. Door and wall quantities are provisional, not a cut list. Tools: six quoted items total $203.95; allow roughly $300-550 depending on existing equipment.

Contractor-installed wall + door: $3,000-7,000 as an owner planning estimate, not a project quote. This is an alternative all-in materials/labor basis, not added to the DIY material total. Excludes design, permits, furniture/decor, window, HVAC, electrical/fire-system changes, slab scanning and other work beyond the wall/door scope.

Overseas sourcing: the local timber, board and wool total only $224.30; a 50% goods discount saves $112.15 before freight. Local high-door comparison is $566.94. If an equivalent imported complete door set were $200, all other comparable costs must be below $366.94 to break even. The $200 is an illustrative input, not an obtained quotation. Get comparable specifications, complete delivered cost, customs/tax responsibility, packaging, lead time and damage/replacement terms. No fixed duty rate or low-value duty exemption is assumed.

## Required field/design verification

1. 这个单元按什么条件可以把活动室认定为卧室？
   确认适用建筑规范、用途、应急逃生开口、采光和通风等要求；不能仅凭放下一张床判断。

2. 原开口与新填充墙如何连接，底部怎样固定？
   确认原梁柱及两侧基层，核实楼板类型和隐藏管线；固定件、位置及孔深尚未指定。

3. 在不动原结构的前提下，96 in 门是否实际装得下？
   实测开口和完成地面，取得厂家整框 / 安装洞口尺寸；不满足时研究中间高度或定制门。

4. 封闭后房间的送风、回风和温度控制够不够？
   现场记录 HVAC 位置，确定是否需要独立回风路径；门上方不留敞开缝来代替设计。

5. 烟感、CO、喷淋及车库分隔需要怎样处理？
   确认现有消防设施、墙体及门要求，保留车库与居住区分隔，检查新增墙对覆盖及通行的影响。

6. 新墙和卧室的插座、开关、照明需要调整吗？
   位置未完整采集，先核对适用要求及现有回路；没有把它们默认计为零工程。

7. HOA 与市府分别需要哪些申请和图纸？
   取得装修规则、产权界面、原批准图及改造记录，核对设计与施工审批流程。

8. 两种门高的龙骨、门框和饰面节点如何最终定案？
   结合 F-01 至 F-04 核实门头连接、立柱排布、门框系统、两面封板、门套和墙脚收口；96 英寸方案上方余量尤其需要复核。

## Sources

- [Sunnyvale · Permits / Permit Center](https://www.sunnyvale.ca.gov/city-services/permits): 地方许可与咨询入口。具体墙体和卧室改造范围需市府确认；此资料未作规范合规认定。
- [Sunnyvale · Applications, Fees and Forms](https://www.sunnyvale.ca.gov/business-and-development/planning-and-building/permit-center/applications-fees-and-forms): 原图、申请和业主施工相关资料的查询入口。尚未取得本单元批准图。
- [USG · Gypsum panels installation guide](https://www.usg.com/content/dam/USG_Marketing_Communications/united_states/product_promotional_materials/finished_assets/sheetrock-gypsum-panels-installation-guide-en-J371.pdf): 石膏板安装及接缝工序参考；不是本项目的最终墙体规范。
- [Post-Tensioning Institute · Existing slab penetrations](https://www.post-tensioning.org/education/publications/resourcelibrary.aspx?id=1575&m=details): 楼板开孔需要识别结构与设计条件。本房屋尚未确认是否为后张预应力楼板。
- [Home Depot · RESO 36 × 96 in door](https://www.homedepot.com/p/326685107): 购物记录中的高门价格样例 $566.94；开向、整框尺寸和安装洞口待核验。
- [Masonite · Reduce noise](https://www.masonite.com/solutions/reduce-noise/): 实芯门隔声原理参考，实际表现受门缝、墙体与其他声路影响。
- [CBP · Mail duty waiver policy](https://www.help.cbp.gov/s/article/Article-1050): 查询时说明低值免税待遇暂停。海外采购按归类、原产地和入境时规则核价，不预设固定税率。
- [APHIS · Lacey Act requirements](https://www.aphis.usda.gov/plant-imports/file-lacey-act-declaration/requirements): 木制品申报取决于产品归类及入境方式等条件。门供应商与清关代理需核对适用要求。