Questionnaire on Stakeholder Perspectives for Public Rental Housing Retrofit Measures\n公屋改造措施各方意見調查

All information collected will be used solely for the purpose of this PhD thesis and will be treated in strict confidence （所有收集嘅資料僅用於此博士論文研究，並將嚴格保密）.


PhD Candidate: LI Jiayu

Email: jiayu.li@connect.polyu.hk


Supervisor: Dr Michael Sing C.P.


Department of Building and Real Estate

The Hong Kong Polytechnic University


博士研究生：李佳宇


電郵：jiayu.li@connect.polyu.hk


導師：Dr Michael Sing C.P.


學系：建築及房地產學系


院校：香港理工大學

Ethics Approval
倫理審批

Ethics Approval Reference No.: HSEARS20260209015

This study has been reviewed and approved by the Human Subjects Ethics Sub-committee (HSEARS) of The Hong Kong Polytechnic University.

倫理審批編號：HSEARS20260209015

本研究已獲香港理工大學人類受試者倫理委員會批准。
Introduction

Most of Hong Kong’s public rental housing (PRH) buildings will remain in use for several decades. Retrofitting the existing PRH stock has therefore become an urgent priority, particularly as the Hong Kong government has committed to improving the energy efficiency of residential buildings through retrofit actions by 2035.

Although a wide range of retrofit measures is available, determining which ones should be prioritized in practice is not purely a technical decision, as retrofit choices affect multiple stakeholder groups with different needs and expectations. For this reason, stakeholder engagement is essential to ensure that retrofit planning reflects real-world priorities and remains practically implementable.

Accordingly, this questionnaire aims to systematically gather your views on the importance of different retrofit measures. The findings will be used to support retrofit recommendations that align with stakeholder priorities and enhance the feasibility and acceptance of future retrofit strategies for Hong Kong’s PRH buildings.

All responses are anonymous and will be used solely for academic research purposes.

簡介

香港大部分公營租住房屋（公屋）將於未來數十年持續使用。因此，改造現有公屋建築屬當前迫切任務，此舉亦配合香港政府承諾於2035年前透過改造措施提升住宅能源效益的目標。

雖然現時有各式各樣嘅改造措施可供選擇，但實際應該優先行邊啲措施，並唔單係技術上嘅決定——因為改造選擇會影響到多個持份者群體，而佢哋各有不同嘅需要同期望。正因如此，必須積極聽取持份者意見，先至可以確保改造規劃真正反映現實需求，並保持切實可行。

本問卷旨在系統收集閣下對各項改造措施重要性之評估。所得資料將用於制定更符合持份者優先考量、且能提升未來公屋改造策略可行性與接受度的具體建議。


所有資料僅作學術研究之用，問卷採匿名方式進行。




Section 1. Linguistic Evaluation Scale 

（第一部分：語言評估量表）


Please evaluate each retrofit measure using the following predefined linguistic terms （請使用以下預設語言術語對每項改造措施進行評估）:


·Not Important /不重要 (NI)

·Slightly Important /稍為重要(SI)

·Moderately Important /中度重要 (MI)

·Important /重要 (I)

·Very Important/十分重要 (VI)
Explanation of PRH Retrofit Optimization Objectives
公屋改造優化目標說明

The specific optimization objectives are:
具體優化目標如下：

1. Reducing environmental impacts and improving indoor comfort (減少環境污染並提升室內舒適度)

→ Does this measure help reduce environmental impacts (such as carbon emissions) and make the buildings more comfortable to live indoors？(呢項措施係咪有助減少環境污染（例如碳排放），同時令住宅住得更舒適？)


2. Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）

→ Does it help residents feel less heat indoors during very hot days?（當室外溫度升高時，係咪有助降低建築物酷熱期間室內熱感）


3. Reducing residents’ electricity bills （減輕居民電費開支）

→ Does it help make energy bills more affordable for residents? （係咪有助令居民嘅能源帳單更易負擔？）


4. Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）

→ Does this measure help the building use less electricity for the same amount of living space? （呢項措施係咪有助建築物在保持相同居住面積時用更少電力？）


5. Upfront purchase and installation cost (前期購買同安裝成本)
→ How important is the investment cost when deciding whether to adopt this measure? (決定係咪採用呢項措施時，投資成本有幾重要？)


Section 2. Respondent Information 
（第一部分：受訪者資料）

1. Stakeholder Group：
2. Educational Background (教育背景)：
3. Years of Professional Experience (相關經驗年數)：

Section 3. Retrofitting Strategies Evaluation
第三部分：改造策略評估

Part A: Building Envelope Retrofit Measures
A部分：建築外圍結構改造措施
4. A1. Wall Insulation Material (XPS / Rock Wool / PU Foam) 
牆身隔熱物料（XPS／岩棉／聚氨酯泡沫）
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
5.
A2. Roof Insulation Material (XPS / Rock Wool / PU Foam)
屋頂隔熱物料（XPS／岩棉／聚氨酯泡沫）
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
6.
A3. Wall thermal performance improvement (U-value Improvement)
提升牆身保溫能力
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
7.
A4. Roof thermal performance improvement (U-value Improvement)
提升屋頂保溫能力
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
8.
A5. Cool Roof Coating Application
涼爽屋頂塗層應用
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
Part B: Window and Façade Retrofit Measures
B部分：窗戶及外牆改造措施
9.
B1. Window Type Upgrade (Double Clear / Low-e / Green / Tint Low-e)
窗戶類型升級（雙層透明／低輻射／綠色／染色低輻射玻璃）
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
10.
B2. Window-to-Wall Ratio (WWR) Adjustment
窗牆比（WWR）調整
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
11. B3. Shading Device Depth
遮陽裝置深度
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
12. B4. Side Fin Installation
側翼板安裝
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
Part C: Building Systems Retrofit Measures
C部分：建築系統改造措施
13. C1. Efficient Air Conditioner Replacement
高效能空調更換
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
Part D: Renewable Energy Retrofit Measures
D部分：可再生能源改造措施
14. C1. Photovoltaic (PV) Panels Installation
光伏（PV）板安裝
  • NI (不重要)
  • SI (稍為重要)
  • MI (中度重要)
  • I (重要)
  • VI (十分重要)
Reducing environmental impacts and improving indoor comfort (減少環境影響並提升室內舒適度)
Keeping indoor temperature more stable during hot weather （喺炎熱天氣下保持室內溫度更穩定）
Reducing residents’ electricity bills （減輕居民電費開支）
Making the building use less energy for the same living space （令建築物喺相同居住面積下用更少能源）
Upfront purchase and installation cost (前期購買同安裝成本)
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