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BIM Architecture: Zhoushan Chaishan Island Elderly Care Center by Meng Fanhao Line+Architectural Firm

Transforming an abandoned primary school into a daycare center offers a practical solution amidst declining birth rates and an aging population. Our goal is to create a warm, spiritual home for the 96 elderly residents left on the island by revitalizing the space and rekindling treasured memories accumulated over time.” – Meng Fanhao

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Located within the Zhoushan Archipelago, Chaishan Island resembles a pearl lost in time. Once a bustling fishing village, it was known for the sight of hundreds of boats returning fully loaded. With fishery resources now protected and overfishing left behind, younger generations are leaving in search of new opportunities, gradually isolating the island. The remaining 96 elderly inhabitants have become its last steadfast guardians.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ View of Chaishan Island – Source: “Dream Reformer”

As populations migrate to urban centers, rural areas deteriorate, making elderly care for those left behind a pressing issue. In response to growing aging demographics, rural elderly care services have become a governance priority. To address the medical and nursing needs of the island’s elderly, Meng Fanhao, co-founder and chief architect of Line+, was commissioned by the Baisha Management Committee of Putuo District, Zhoushan City, to redesign and convert a primary school into a daycare center. This project, Line+’s first public welfare initiative, aims to become a beacon of hope—easing loneliness and offering a retirement home that integrates social and medical functions, allowing the elderly to live peacefully.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Unlike typical rural revitalization efforts centered on culture and tourism, Line+ focuses on the humanistic care of the elderly left on Chaishan Island. Our aim is to support aging in place while injecting vitality into the countryside. By creating shared public spaces and a harmonious living environment, the center helps the elderly reconnect with warm memories and fosters community ties, pioneering public elderly care services in rural settings.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Aerial view of Chaishan Island – Screenshot from the video “Dream Reformer”

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

01 Current Conditions and Challenges

Chaishan Island, with a land area of 0.88 square kilometers, is part of Baisha Township in Putuo District, Zhoushan. The original building stands in the island’s center and is one of its few public structures. Constructed 20 years ago as a primary school, it was converted into a temporary nursing home four years ago. However, due to its basic facilities, few elderly residents were willing to move in.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Daycare center before renovation

Initial research identified several issues: the site’s terrain causes significant height differences between inside and outside; narrow public spaces limit activity; and south-facing corridors exacerbate poor lighting and humidity in the living areas. These drawbacks reduce the nursing home’s practical value, making it unsuitable for elderly residents. Thus, the renovation needed to address both structural repairs and spatial reconstruction.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Analysis of existing problems

During construction, the team encountered logistical challenges. Chaishan Island has limited daily shipping, making timely waste removal impossible, so debris had to be temporarily stored on the island. Transporting materials like cement, gravel, and steel was also difficult due to narrow, aging roads; over 3,000 tons of materials had to be delivered in small batches.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

To overcome this, we collaborated with the owner to build a circular road linking the dock, integrating it into the island’s future comprehensive development plan by connecting the mountaintop to various regions. Materials were centralized at the mountaintop and then gradually distributed downward to their final locations.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

02 Reawakening Memories

Chaishan Island remains naturally pristine, with quaint houses nestled between mountains and sea. Early in the design process, Meng Fanhao and his team immersed themselves in the island community, engaging closely with the elderly to understand their needs and listen to their stories. Most are former fishermen who depended on the sea. Reflecting on their youth, their once dimmed eyes now shine with revived memories.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Listening to the needs of the elderly left behind – Screenshot from “Dream Reformer”

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

The daycare center’s design draws inspiration from fishing boats, featuring curved and overhanging shapes that give the impression of a boat floating on the island. This architectural metaphor awakens emotions and memories, telling the story of Chaishan Island through design.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Generational analysis

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Model photo

03 Maximizing Public Space & 3D Design

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Prior to renovation, only four elderly residents lived in the daycare center, while others remained at home. As their mobility decreases with age, the need for communal public spaces grows to support daily activities, culture, and social interaction. This renovation strives to reconnect the elderly with their community and alleviate loneliness.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Given the island’s limited space, the entire first floor is dedicated to public use, housing end-of-life care rooms, shared dining areas, kitchens, and multifunctional halls accessible to all island residents. The second floor is reserved for elderly living quarters.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ First floor plan comparison before and after renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

A multi-level rooftop terrace links the first-floor courtyard with terraces via ramps. Flower beds and seating areas separate flow and space, providing generous outdoor activity and rest zones, maximizing the use of limited underground public areas.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Streamlining Circulation

The original Tuolao residence was built along the mountain, spanning a 1.2-meter height difference between the east and west plateaus. Simply raising the foundation on the west side would create nearly a two-meter step at the courtyard entrance, hindering accessibility. To resolve this, we preserved the original terrace and connected the lower western terrace to the external road for smooth traffic flow.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Front yard renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Though the original courtyard was open, it had limited functional use. We relocated the entrance, optimized foot traffic, and introduced a connecting corridor guiding visitors through the central courtyard before entering the interior. This design links the daycare center’s exterior and interior spaces.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

The boundary between the open courtyard and multifunctional hall preserves courtyard integrity while enhancing the connection between outdoor and indoor public areas. This encourages landscape interaction and fosters social engagement within the daycare center.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Kitchen and Cafeteria Connectivity

To the east of the first floor, we included a nearby residential building within the renovation scope, connecting it to the main structure to create a spacious, well-lit shared cafeteria and kitchen. This upgrade not only enhances dining quality but also serves as a multifunctional space for activities and social interaction.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Restaurant interior before renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Roof Space Enhancement

Renovating the roof strengthens the connection between the daycare center and island landscapes, expanding the elderly’s visual horizon. Skylights were incorporated to enhance natural lighting in second-floor bathrooms, maximizing daylight penetration.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Surrounding the skylights are landscaped seating and vegetable gardens. Additionally, a rooftop tea room with panoramic views enriches the space’s functionality, allowing the elderly to enjoy natural beauty in a peaceful setting.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Opening the rooftop space amplifies landscape potential and expands usable area, allowing the elderly to enjoy views of the island and sea from above, enhancing comfort and wellbeing.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

04 Medical and Care Space Transformation

To improve the building’s uneven spatial layout and poor functional compatibility, we integrated multiple functions into small spaces through zoned planning, optimizing medical and elderly care facilities.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Exploded axonometric diagram

Residential Area Redesign

The second floor was originally residential, with corridors on the sunny side that negatively impacted bedroom lighting. We repositioned corridors and stairs to the shaded side, reserving the sunny side for bedrooms to improve light, ventilation, and views.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Second floor plan comparison before and after renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Elderly bedroom before renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Window frame system axonometric drawing

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

The original second floor featured a height difference between east and west buildings, complicating access for the elderly. We introduced a public space separating these areas, connected by accessible ramps, and added rest and social spots like book bars. These book bars transform indoor areas into outdoor-like environments, enabling those with limited mobility to enjoy nature and island views.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Internal height difference area before renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Aging-Friendly Improvements

Safety is paramount in aging-friendly design. The original building’s steep stairs, a result of the terrain, were unsuitable for elderly residents. During renovation, the staircase was relocated to the site center, and an elevator reaching the rooftop was installed, connecting all levels and easing vertical circulation.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

All staircases indoors and outdoors were redesigned with gentler slopes and handrails to support slower walking speeds. Barrier-free pathways connect all spaces, improving accessibility. Seating areas are spaced along long corridors to provide rest spots for residents with limited mobility.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Interior before renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

We enhanced elderly-friendly features in bedrooms, upgrading to professional nursing beds and emergency equipment for improved care. Furniture edges and corners were rounded to reduce injury risks.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

The original bathrooms were narrow and failed to meet accessibility standards requiring a 1.5-meter wheelchair turning radius. Layouts were modified to comply with accessibility guidelines. Floor height differences between bedrooms and bathrooms were eliminated, and smooth tiles replaced with anti-slip, impact-resistant terrazzo flooring, enhancing safety.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Bathroom before renovation

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

05 Preserving Color and Local Materials

Respecting the site’s memory and village character, we incorporated local elements into the building’s color palette and materials to blend harmoniously with the environment.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Typical residential facade on Chaishan Island

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Red and blue hues derive from fishermen repainting their boats and using leftover paint on their doors and windows, creating distinctive facade marks. These colors were applied to the daycare’s exterior and interior second-floor window sills, as well as painted wooden boards on traffic spaces and outdoor ramps. The vivid palette helps elderly residents navigate and differentiate spaces.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

The primary building material is washed stone paint, offering a rich textured surface with a unique granular feel, greatly enhancing the building’s character. Entrance walls use locally common rough stone, while connecting corridors feature steel columns, creating a dynamic contrast and enriching the material hierarchy to reflect local architecture.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural FirmBIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Wall material sample

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Additionally, fishing nets, often used as fences or entrance barriers in local homes, inspired new textures for protective netting in corridors and the rooftop lighthouse, giving these materials a fresh expressive quality.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

06 Conclusion

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

The elderly of Chaishan Island, who have lived by and depended on the sea their entire lives, have simple wishes. Acknowledging their needs and hopes, Line+ dedicated itself to this public welfare daycare project focused on rural revitalization. Our ambition is to raise awareness about the living conditions of these vulnerable groups and to create a space that meets elderly care needs while reflecting local character—offering warmth and support to the elderly left behind.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

This project is not only a design exploration in rural renovation but also a heartfelt tribute and transmission of spirit. We collaborated with expert teams across industries to support Chaishan Island’s future. We sincerely thank all participating teams and sponsors who made the dream of a floating boat on Chaishan Island a reality—ensuring the island is never alone.

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Project model photo

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

Project drawings

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ General layout plan

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ First floor plan

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Second floor plan

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Third floor plan

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Fourth floor plan

BIM Architecture | Island Floating Boat: Zhoushan Chaishan Island Elderly Care Center/Meng Fanhao Line+Architectural Firm

△ Section diagram

Project Information

Project Name: Baishagang Village Elderly Care Center

Architecture, Interior, and Landscape Design: Line+ Architecture Firm

Lead Architect / Project Creator: Meng Fanhao

Project Architect: He Yaliang

Design Team: Xu Yifan, Xu Hao, Wang Jionghao (intern), Jin Yuting, Fan Xiaoxiao, Ye Xin, Xu Yichang, Jin Kaidi, Zhang Weixuan (intern), Chen Hanxi (intern), Li Shangyang, Jin Jianbo, Rao Feier, Su Chenjuan

Resident Designers: Xu Yifan, Xu Yichang, Ye Xin

Owner: Baisha Island Management Committee, Putuo District, Zhoushan City

Project Planning: Zhu Xiaoming, Zhao Lijun

Program Partner: Shanghai Oriental TV Dream Maker

Construction Drawing Cooperation: Architectural Design and Research Institute of Three Gorges University

General Contractor: Zhejiang Changyi Construction Co., Ltd.

On-site Construction Coordination: Zhao Lijun

Design Guidance: M.TP 104

Location: Chaishan Island, Zhoushan, Zhejiang

Building Area: 799 square meters

Design Period: June 2023 – September 2023

Construction Period: September 2023 – May 2024

Structure: Reinforced concrete frame

Materials: Concrete, steel, washed stone coating, textured coating, matte stainless steel, wood fiber board, rough stone

Photography: Existence of Architecture – Architectural Photography line+

Thank You to Our Sponsors

Exterior washed stone: Terui Yu

Exterior wood fiberboard: Kemwood

Doors and windows: Villa standard doors and windows

Indoor paint: Nippon Paint

Indoor kitchen appliances: Linne

Indoor woodwork: Shupai Home Furnishings

Ceramic tiles: Dongpeng Ceramic Tiles

Lighting fixtures: Qiyi Lighting

Air conditioning and underfloor heating: York Air Conditioning

Bathroom fixtures: Hengjie Bathroom

Terrazzo and rock slab: Dongxing

Outdoor seating: Ningbo Helong New Materials

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