How can I control the budget for whole-house customization?

The core of budget control is "tiered configuration." Take wardrobes as an example: basic configuration E0 particle board + PET door panel, Beijing 500–550 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou areas 425–467.5 yuan/㎡; mainstream configuration ENF particle board + PET door panel, Beijing 700–800 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou areas 595–680 yuan/㎡; upgraded configuration ENF eco board + PET door panel, Beijing 950–1,100 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou areas 807.5–935 yuan/㎡. Kitchen cabinets are priced by linear metre: basic configuration Beijing 900–1,000 yuan/linear metre, Baoding, Langfang, Xiong'an and Zhuozhou 765–850 yuan/linear metre; mainstream configuration Beijing 1,020–1,250 yuan/linear metre, Baoding, Langfang, Xiong'an and Zhuozhou 867–1,062.5 yuan/linear metre; upgraded configuration Beijing 1,300–1,650 yuan/linear metre, Baoding, Langfang, Xiong'an and Zhuozhou 1,105–1,402.5 yuan/linear metre. Tatami mainstream configuration Beijing 500–1,100 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou 425–935 yuan/㎡. TV cabinet mainstream configuration Beijing 400–800 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou 340–680 yuan/㎡; shoe cabinet mainstream configuration Beijing 400–700 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou 340–595 yuan/㎡; sideboard mainstream configuration Beijing 400–800 yuan/㎡, Baoding, Langfang, Xiong'an and Zhuozhou 340–680 yuan/㎡. Note that quotations do not include removal of existing cabinets; this must be clarified and confirmed separately in advance. The above are reference prices and do not constitute a formal quotation; they are suitable for preliminary budgeting, and the actual amount must be calculated based on dimensions, design, materials, hardware, quantity, and on-site conditions.