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BIM Architecture: Harmonizing Tradition and Innovation in the Courtyard Renovation at 91 Beiluogu Lane by Jiejie Studio

| Atypical Courtyard House |

This project is located at No. 91 Beiluogu Lane, Beijing, covering an area of approximately 1,400 square meters. Owned by Beijing Yi Xi Zhi Di, the site features a traditional yet unconventional quadrangle courtyard. The traditional element lies in its layout as two courtyard houses at the core of Beijing, arranged harmoniously and enclosed by surrounding buildings. The unconventional aspect is the presence of a large underground space beneath the site, with a courtyard opened within the second courtyard, creating a unique double-layered courtyard experience. The owner aims to transform this space into a multifunctional venue for dining, afternoon tea, and homestay.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Entrance Space Overview

Architecture and Context

Every venue has its unique characteristics, and the essence of design lies in unlocking new possibilities based on these traits. Considering the owner’s brand vision and the current site conditions, we developed the concept of an “interwoven dialogue between new and old.” Our aim was to craft an architectural experience that marries the traditional Beijing quadrangle courtyard with contemporary design trends.

To realize this, we structured the site around the idea of “two courtyards, three pathways, and three spatial colors.”

Two Courtyards: Existing Site Conditions

The site consists of a traditional quadrangle courtyard with two distinct courtyards. The first courtyard functions as a restaurant and afternoon tea area, while the second courtyard is designated for homestay accommodations.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Second Courtyard Space Overview

Three Pathways: Architectural Layout

A roofed corridor system connects the two courtyards, creating a cohesive flow. This design introduces three spatial layers—sky, ground, and underground—linked by the pathways. The corridor not only unifies the space but also offers additional spots for visitors to gather and dine. This multi-level spatial experience includes high-altitude viewing, courtyard transitions, and underground exploration, enriching the overall atmosphere.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Roof Corridor System

Three Spatial Colors: Experiencing the Place

Red and green are classic colors traditionally used in Beijing courtyards. Upon entering, these hues dominate the scene: the courtyard itself showcases traditional red, while the indoor restaurant is primarily green. In contrast, the second courtyard features white tones, crafting a fresh homestay ambiance.

Red

The entrance courtyard is a classic Beijing quadrangle with a tidy, symmetrical layout. It preserves original elements such as screen walls, hand-painted corridors, doors, and windows. Our renovation strategy respects the enclosed courtyard space while introducing new design nodes to enhance it.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Renovation Process Featuring “One Hemp and Five Ashes” Technique for Ancient Buildings

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Restored Paintings and Door Panels

Building on the original traditional door design, we innovated by dividing each door leaf into two movable sections—top and bottom—allowing them to function as windows or doors depending on their position.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Opening the upper door section creates a unique corridor vista.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Framed views through the door panels enhance the corridor experience.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Interior Corridor Space

A moon gate is positioned at the southern corridor of the first courtyard, serving as the key passageway between the two courtyards. It also acts as the central link connecting ground-level and rooftop circulation.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

The moon gate positioned between the two courtyards

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

West side partial area near the moon gate

Green

The main room after entering the courtyard serves as the dining space, where green dominates the color palette. We renovated the original roofs of the ancient building and incorporated traditional elements such as pavilions, corridors, and flower windows from the quadrangle courtyard. These have been combined with modern materials to create a fresh spatial experience.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Dining space in the north room

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Dining space in the east wing room

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Dining area within the east wing room

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Bar counter in the east wing room

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Small bamboo grove in the east wing house

White

The second courtyard is a more private guest room area, featuring a special quadrangle courtyard that encloses a sunken courtyard at its center. The space includes 12 guest rooms arranged over two stories, each facing the courtyard to maximize natural light. A white moon platform has been built in the courtyard, serving as the focal visual element visible from every guest room.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Entrance to the lunar platform

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Entrance to the second courtyard

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ White moon platform with red moon door

The original sunken courtyard features a still water pool that beautifully reflects the moon platform. When the breeze stirs the water, shimmering waves evoke the image of the moon rising from the sea steps.

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Interior view of the sunken courtyard in the second courtyard

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

Partial staircase

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Interior view of the sunken courtyard

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Interior view of the sunken courtyard

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Guest room interior space

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Guest room interior space

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Guest room interior space

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Room with attic interior

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Incorporating plants into guest room interiors

Conclusion

This project centers on the dialogue between old and new, striving to balance restoration and renovation. The goal is to create a space that offers an authentic experience blending historical character with contemporary design.

Project Drawings

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ First floor plan

BIM Architecture | Interwoven Dialogue between New and Old - Courtyard Renovation Design at 91 Beiluogu Lane/Jiejie Studio

△ Section diagram

Project Information

Project Name: Architectural and Interior Renovation Design of Courtyard No. 91 Beiluoguxiang

Owner: Beijing Yi Xi Zhi Di

Project Address: No. 91 Beiluogu Lane, Dongcheng District, Beijing

Project Type: Restaurant, Homestay, Tea Room

Designer: Jiejie Studio

Lead Designer: Ming Guanyu

Project Leader: Qi Ming

Project Team: Cao Jincan, Wang Yifan, Yue Jie, Zhang Xuan, Liu Wenrui

Lighting Design: Beijing Yuanzhan Lighting Design Co., Ltd

Construction Drawing Design: Beijing Bujianhai Construction Drawing Team

Photographers: Chill Shine, Qiu Wensanying

Building Area: 1,400 square meters

Completion Date: February 2022

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