What must this home let its occupants do now, and what should remain possible as their needs change?
Write the household’s daily tasks, access needs and constraints before choosing rooms or a style. Compare layouts against those tasks, the actual site and interacting building systems. Keep the reasons for the chosen design, unresolved questions and future adaptation options with the plans.
Evidence checked October 16, 2026 (America/Denver). Version 1.0. Desk review; no hands-on testing.
What this guide helps you do
For preparing a design brief or comparing an existing home, remodel or new design. It supports discussion with occupants and competent designers; it does not supply permit drawings, required dimensions, an accessibility compliance determination or an individual clinical assessment.
Describe activities before naming rooms
List who will use the home and what they need to do: arrive, move around, cook, wash, rest, work, store belongings and help someone else. Include visitors, temporary injuries, mobility aids, sensory needs and privacy preferences. Ask the people involved which tasks are difficult today and which changes matter most. Distinguish essential requirements from attractive extras. This original brief should be specific enough to judge a proposed layout without assuming that a larger home or a fashionable feature will solve the problem.
Review the complete route through a day
Use AARP’s HomeFit gateway to find the language-specific guide and worksheets for a room-by-room discussion. Follow a normal arrival, meal, bathroom visit and bedtime through the proposed space, including where belongings and equipment go. Record awkward transfers, unclear controls and conflicts between simultaneous activities. The gateway was reviewed here; its downloadable publication and worksheets were not individually audited. Have the actual occupants and appropriate professionals evaluate the proposed arrangement before treating a sketch as a workable solution. Source: AARP HomeFit guide and worksheets gateway.
Consider the house as interacting systems
DOE’s planning approach connects the enclosure, daylight, appliances, heating, cooling and water heating with site and climate. Discuss these relationships early: a change to windows can alter comfort and heating demand; relocating equipment can change service access and useful space. Compare several options against the same brief and actual constraints. Ask the designer to explain assumptions, tradeoffs and needed assessments. Generic benefits on an educational page are not a calculated saving or a tested outcome for your home. Source: DOE whole-house design planning.
Separate desired access from applicable requirements
A household can plan for useful access even before a legal coverage question is settled. The Access Board explains that scoping identifies covered elements and spaces, while technical provisions explain their requirements. Give the responsible designer or authority the actual use, building type, funding/program context and project scope. Ask which housing, accessibility and building requirements apply. A public-facility illustration cannot certify a private home; this guide does not decide coverage or provide a universal set of dimensions. Source: Access Board introduction to accessibility scoping.
Find deeper learning and appropriate assessment
USC’s home-modification hub offers a route into research, consumer education and agency links. Follow the original source most relevant to the occupant’s task, and verify the actual provider’s qualifications, terms and availability. A directory is a starting point for inquiry. Where a person’s movement, balance, vision or care needs shape the design, seek a suitable individual assessment. The hub explicitly does not endorse or qualify all listed services; no provider or modification was tested in this review. Source: USC home-modification resource library.
Keep an adaptable decision file
For each design option, record the tasks it supports, important compromises, costs that still need quotes and changes it could accommodate later. Consider service access, repair access, storage and how shared space will work when schedules overlap. Ask the designer which future changes can be anticipated without making unsupported structural assumptions. Retain dated plans and the reason for the chosen option so a later occupant or designer can understand both its intent and its limits.
A pathway to practice
- Describe people and tasks: Daily use, access, privacy, priorities
- Compare complete layouts: Routes, storage, services, site
- Check requirements and needs: Competent design and individual assessment
- Preserve the chosen reasoning: Plans, tradeoffs, future adaptation
Resources and their limitations
DOE whole-house design planning
Use it for: Consider people, site, climate and interacting building systems before choosing a layout.
Access and cost: Public page freely readable; design, assessment, materials, construction and professional services may cost extra.
How to use it: Read What, Why and How with the design team; compare options against an agreed household brief and project-specific assessment.
Evaluation and limits: General teaching page, not a floor plan, modeled performance result, current incentive offer or guarantee of savings. No design, Home Energy Score or assessor tested.
Alternatives: A qualified residential designer; AARP HomeFit; site and building-envelope companion guides.
Open DOE whole-house design planning
AARP HomeFit guide and worksheets gateway
Use it for: Find a home-fit review framework for people of different ages and abilities.
Access and cost: Landing page describes a free 36-page publication in five languages; actual downloads, printing and modification costs were not tested.
How to use it: Open the language-specific guide and worksheets; use them with the occupants and competent help to identify needs room by room.
Evaluation and limits: Gateway read; linked guide PDFs, worksheets and videos were not individually reviewed. No dimensional instruction, accessibility certification, clinical assessment or grant availability inferred.
Alternatives: USC home-modification resource library; occupational therapist or qualified access designer.
Open AARP HomeFit guide and worksheets gateway
Access Board introduction to accessibility scoping
Use it for: Distinguish which requirements apply from the technical details used to meet them.
Access and cost: Public page freely readable; design, assessment, materials, construction and professional services may cost extra.
How to use it: Start with the introduction and Scoping Requirements, then identify the actual covered facility and governing standards with a qualified designer or responsible authority.
Evaluation and limits: The guide expressly is not comprehensive or a stand-alone technical guide. ADA coverage was not determined for any home. Do not apply public-facility examples as a universal private-house prescription.
Alternatives: Responsible housing/building authority and actual applicable standards; HomeFit for voluntary household planning.
Open Access Board introduction to accessibility scoping
USC home-modification resource library
Use it for: Continue from a household need to research, consumer education and possible service leads.
Access and cost: Public page freely readable; design, assessment, materials, construction and professional services may cost extra.
How to use it: Choose Library, Links or Consumer Resources; inspect the original destination and verify a provider’s qualifications, terms and current availability directly.
Evaluation and limits: Gateway only; linked research, providers, directory entries and service availability not audited. USC explicitly does not endorse or qualify listed products and programs.
Alternatives: AARP HomeFit; local aging/disability organizations and qualified assessment professionals.
Open USC home-modification resource library
Checklist
- Occupants, daily tasks and essential needs recorded
- Entry-to-bedtime routes reviewed with actual users
- Site, climate and building-system interactions considered
- Applicable accessibility and building requirements identified by the right authority
- Assessment and provider leads verified before commitment
- Chosen option, compromises and future changes documented
Related guides
Choosing a site and understanding conditions (SG-D08-S01); Construction methods and materials (SG-D08-S03); Owner-building and project management (SG-D08-S04); Small homes and alternative shelter (SG-D08-S05); Roofs, foundations and building envelopes (SG-D08-S06); Healthy indoor environments (SG-D08-S07); Codes, permits and inspections (SG-D08-S08); Insulation and weather sealing (SG-D09-S01).
From the Whole Earth registry to current practice
The Owner-Built Home in Spring 1969 (PDF page 24, printed page 22; WE69S-E045/WE69S-L003) starts with site, space requirements and personal preferences. That visually reviewed question inspires a household design brief. Its historical fireplace, foundation, plumbing and structural details are not current design instructions.
Whole Earth Spring 1969 archive edition
Sources and review notes
No floor plan, dimensional clearance, individual access need, clinical assessment, legal coverage, product or building performance was tested. Downloadable HomeFit materials and USC directory providers require their own review. Historical design questions are kept separate from old construction specifications.
