AI Prompts for Writing Architecture Specifications

Writing specifications is one of the least-loved parts of architectural practice. It's repetitive, detail-heavy, and one wrong clause can blow up a project during construction. Most architects either copy-paste from previous projects (risky), delegate to a junior who doesn't fully understand the spec (riskier), or hire a specialist (expensive).

AI won't write your entire specification from scratch -- but it can draft sections, check consistency, flag missing items, and cut your editing time in half. The trick is knowing what to ask for and how to structure your prompts so the output is actually useful rather than generic filler.

Here are ready-to-use prompts organized by specification type, format, and project phase. Copy them, adapt the bracketed fields, and iterate.

General Specification Drafting Prompts

These prompts work for initial drafts across any specification format. Replace bracketed content with your project specifics.

"Draft a specification section for [product/system, e.g., aluminum curtain walling] for a [building type, e.g., 6-story commercial office] in [location, e.g., Manchester, UK]. Include: scope, related sections, submittals required, quality assurance requirements, materials and manufacturers (list 3 approved), execution/installation, and protection. Use formal specification language. Do not include pricing."

"Write a performance specification for [system, e.g., flat roof waterproofing] that defines required outcomes without naming specific products. Include: design life (minimum [X] years), performance criteria, testing standards, warranty requirements, and inspection regime. Reference relevant standards for [country, e.g., UK -- BS/EN standards]."

"I have a draft specification for [product]. Review it for: missing clauses, internal contradictions, vague language that could cause disputes, and compliance gaps with [standard, e.g., BS 8233 for acoustic glazing]. Suggest specific edits."

"Convert this proprietary specification naming [specific product] into an open performance specification. Keep all performance requirements but replace brand names with measurable criteria. Ensure at least 3 manufacturers could comply."

"Generate a submittal requirements checklist for [specification section, e.g., structural steelwork]. List each required submittal, format, number of copies, review period, and approval status categories."

NBS Format Prompts (UK)

NBS is the standard specification system in UK practice. These prompts target NBS-style clause structure.

"Draft an NBS-format specification clause for [product, e.g., internal plasterwork to BS 5492]. Structure it as: Clause number, Title, Scope, Standards, Products (materials, components, accessories), Execution (preparation, application, finishing), and Completion. Use NBS clause numbering conventions."

"Write NBS specification clauses for a complete [system, e.g., raised access flooring system] covering: 1) Product data (materials, finishes, load ratings to PSA MOB PF2 PS/SPU), 2) Accessories (pedestals, edge trims, grommets), 3) Execution (subfloor preparation, layout, cutting, fixing), 4) Completion (cleaning, protection, snagging). Reference BS EN 12825."

"I'm specifying [product, e.g., acoustic ceiling tiles] for a [building type]. Generate an NBS-format clause that covers: acoustic performance (NRC rating, CAC rating), fire classification (BS EN 13501-1), dimensional tolerances, colour/finish options, edge profile types, suspension grid requirements, and maintenance access."

"Create an NBS specification for external brickwork including: brick type and quality (to BS EN 771-1), mortar specification (to BS EN 998-2), bond pattern, joint profile and width, DPC and cavity tray requirements, movement joints (spacing and sealant spec), and workmanship standards. Location: [city], exposure category: [severe/very severe]."

"Draft NBS clauses for [number, e.g., 5] related specification sections that interface with each other: [list systems, e.g., curtain walling, external cladding, roofing membrane, rainwater goods, structural steelwork]. For each section, include cross-references to the other sections where interfaces occur."

CSI MasterFormat Prompts (North America)

For US and Canadian projects using the 50-division MasterFormat structure.

"Draft a CSI MasterFormat Section [number, e.g., 07 92 00 -- Joint Sealants] specification. Include: Part 1 General (summary, references, submittals, quality assurance, delivery/storage, warranty), Part 2 Products (manufacturers, materials, colors), Part 3 Execution (examination, preparation, installation, cleaning, protection). Use ASTM and AASHTO references where applicable."

"Write a MasterFormat Division 09 specification for [product, e.g., porcelain tile flooring -- Section 09 30 00]. Include: tile size and thickness, ANSI A137.1 requirements (water absorption, breaking strength, abrasion resistance, DCOF), setting materials, grout type, movement joints per TCNA guidelines, and installation over [substrate type]."

"Generate a complete Division 08 specification for [product, e.g., aluminum-framed storefront -- Section 08 41 13]. Cover: framing system (thermal performance, structural, finish), glazing (type, thickness, U-value, SHGC, VLT), hardware, weather seals, flashing, and testing requirements (ASTM E283, E330, E331). Climate zone: [IECC zone]."

"I need a MasterFormat Section 03 30 00 (Cast-in-Place Concrete) specification for a [building type] in [seismic zone]. Include: concrete mix designs (by application: footings, slabs, walls, columns), compressive strength requirements, admixtures (air entrainment for [exposure]), reinforcement (ASTM A615 Grade 60), formwork, placement, curing, and testing frequencies per ACI 301."

"Create a specification outline (section numbers and titles only, no full clauses) for a complete [building type, e.g., K-12 school] project using CSI MasterFormat 2024. List all divisions and sections that would typically apply. Mark critical coordination sections."

Material Specification Prompts

These focus specifically on materials -- performance criteria, approved products, and substitution language.

"Write a material specification for [material, e.g., engineered timber CLT panels] for structural use in a [building type]. Include: species and grade, manufacturing standard, moisture content at delivery, dimensional tolerances, fire performance (charring rate and classification), adhesive type (formaldehyde-free requirement), structural properties (bending strength, compression parallel/perpendicular), and certification requirements (FSC/PEFC)."

"Draft an approved materials list for [system, e.g., external insulation and cladding] that includes: 3 primary manufacturers with specific product lines, performance criteria each must meet, substitution procedure, and basis-of-design product. Format as a comparison table with columns for each manufacturer."

"I need to specify [material, e.g., natural stone cladding] for a building facade in [climate]. Generate a complete material specification covering: stone type and geological source, physical properties (density, water absorption, compressive strength, frost resistance per BS EN 12371), finish type, dimensional tolerances, fixing method, sample and mock-up requirements."

"Write material specifications for a sustainable interior fit-out. Cover: low-VOC paints (to [standard, e.g., EU Ecolabel or GREENGUARD Gold]), FSC-certified timber, recycled content flooring, and natural linoleum. For each material, include: performance criteria, environmental certification, testing standards, and 3 compliant product examples."

"Generate a materials comparison table for [application, e.g., flat roof coverings] with columns: Material Type, Design Life, Cost Range (per sqm), Sustainability Rating, Fire Classification, Weight, Maintenance Requirements, Warranty. Include at least 5 different systems: single-ply membrane, built-up felt, liquid applied, green roof, standing seam metal."

Door and Window Schedule Prompts

Schedules are tedious to compile and easy to get wrong. These prompts help generate structured starting points.

"Create a door schedule template for a [building type, e.g., 20-room hotel] with columns: Door Ref, Location (from/to), Width, Height, Leaf Configuration (single/double/leaf-and-a-half), Material, Core Type, Fire Rating, Acoustic Rating (Rw dB), Glazed Vision Panel (Y/N, size), Finish, Hardware Set Ref, Closer (Y/N), Access Control (Y/N), Threshold Type, Smoke Seal, Notes. Populate with typical doors for this building type."

"Generate a window schedule for a [building type, e.g., 3-story residential apartment block] with columns: Window Ref, Location, Width, Height, Type (casement/tilt-turn/fixed/sliding), Material, U-value, Solar Gain (g-value), Acoustic Rating, Opening Restriction (Y/N), Trickle Vent, Safety Glass Requirement, Sill Height, Finish, Notes. Populate with typical windows. UK Part L compliance required."

"I have a door schedule with [X] doors. For each fire-rated door, list the complete hardware set needed for compliance with [BS EN 1154 / NFPA 80]. Include: hinges (number, grade, fire rating), closer (type, back-check requirement), lock (function, fire rating), handle (lever type, return-to-door), signage, seals (intumescent, smoke, combined), hold-open device (linked to fire alarm Y/N). Group by fire rating: FD30, FD60, FD120."

"Generate an ironmongery schedule for the following doors: [list door refs and types, e.g., D01 - single leaf FD30 office, D02 - double leaf FD60 corridor, D03 - single leaf non-rated WC]. For each door, specify: hinge type and quantity, lock or latch function, handle style, closer type, signage, seals, kick plate, door stop, and access control hardware. Reference Architectural Ironmongers specification."

"Create a hardware set schedule with [number] unique sets for a [building type]. Present as a matrix: Hardware Set Ref (A, B, C...) vs. hardware items (hinges, lock, handle, closer, overhead stop, seal, signage, kick plate, hold-open, coordinator). Mark which items apply to each set. Add notes for door types that reference each set."

Performance Specification Prompts

When you need to define outcomes rather than prescribe products.

"Write a performance specification for [system, e.g., external wall thermal insulation]. Define: target U-value ([value] W/m2K), condensation risk compliance method (BS EN ISO 13788), fire classification (minimum Euroclass [class]), compressive strength for mechanical fixings, moisture resistance, and durability (30-year design life). Do not name any specific products."

"Draft an acoustic performance specification for [space type, e.g., open-plan office]. Include: ambient noise rating (NR/NC curve), reverberation time target, partition STC/Rw requirements between adjacent spaces, floor impact sound (IIC/Ln,w), and HVAC noise criteria. Reference [standard, e.g., BS 8233:2014 or ASHRAE] and present as a room data sheet format."

"Generate a daylighting performance specification for [building type]. Define: minimum daylight factor targets by room type, glare limits (DGP threshold), uniformity ratios, assessment methodology (climate-based daylight modeling to [standard, e.g., BS EN 17037]), and how compliance will be demonstrated (simulation software requirements, test points)."

"Write a performance specification for an accessible WC to [standard, e.g., BS 8300-2:2018 / ADA]. Cover: minimum room dimensions, door width and swing direction, transfer space, grab rail positions and loading requirements, sanitary ware heights, flush controls, alarm system, floor finish slip resistance (PTV), and signage. Do not specify product brands."

"Create a whole-building energy performance specification for a [building type] targeting [standard, e.g., LEED Gold / BREEAM Excellent / Passivhaus Classic]. Define: space heating demand, primary energy demand, airtightness target, renewable energy provision, metering and sub-metering requirements, commissioning scope, and seasonal commissioning."

Editing and Quality Checking Prompts

Use these after you have a draft specification to catch errors and improve quality.

"Review this specification section for [product] and identify: 1) Clauses that contradict each other, 2) Ambiguous language a contractor could exploit, 3) Standards references that are outdated or withdrawn, 4) Missing items that are typically included in this specification type, 5) Coordination gaps with related specification sections. Suggest specific rewrites for each issue."

"Compare this specification against [standard/code, e.g., Building Regulations Part B / IBC Chapter 7] and highlight any non-compliance. For each gap, quote the relevant code clause and suggest specification text to address it."

"Rewrite this specification section to remove all proprietary product references while maintaining the same performance requirements. Ensure the rewritten version could be met by at least 3 different manufacturers. Keep test standards and performance thresholds unchanged."

"This specification was written for a project in [Country A]. Adapt it for [Country B] by replacing: standards references (e.g., BS EN to ASTM), measurement units (metric to imperial or vice versa), regulatory references, and terminology (e.g., 'programme' to 'schedule'). Flag any performance requirements that may not be appropriate for the new country's climate or building culture."

"Generate a specification coordination checklist for the interface between [Section A, e.g., structural steelwork] and [Section B, e.g., curtain walling]. List every item that must be coordinated: connection details, tolerances, movement allowances, fire stopping, thermal bridging, waterproofing, access for installation/maintenance, and responsibility boundaries."

Sustainability and Environmental Specification Prompts

"Draft a responsible sourcing specification clause requiring: FSC/PEFC certification for all timber, BES 6001 (or equivalent) for concrete, steel, and aggregates, EPD (Environmental Product Declaration) submissions for all major materials, and a project-specific materials tracker. Reference [framework, e.g., BREEAM Mat 03 / LEED MR credits]."

"Write specification clauses for embodied carbon management on a [building type]. Include: whole-life carbon assessment requirement (to [standard, e.g., EN 15978 / RICS methodology]), embodied carbon target ([value] kgCO2e/m2), contractor reporting requirements, material substitution incentives for lower-carbon alternatives, and EPD submission requirements."

"Generate specification requirements for construction waste management targeting [percentage, e.g., 95%] diversion from landfill. Include: Site Waste Management Plan requirements, waste stream segregation (list material types), reporting frequency, pre-demolition audit, and penalties for non-compliance. Reference [standard, e.g., BREEAM Wst 01]."

Tips for Getting Better Specification Output from AI

Specifications are where AI output needs the most human oversight. Here's what I've learned from using these prompts across dozens of projects.

Always specify your country and applicable standards. AI defaults to a mix of US and UK references. If you're writing to NBS format, say so. If you need ASTM references, say so. Otherwise you'll get a jumbled hybrid that references BS EN standards alongside ASTM -- which looks amateurish and creates confusion.

Include your project's specific constraints. "Commercial office in central London, BREEAM Excellent target, conservation area" produces vastly different output than "office building." Context shapes everything from material choices to heritage clauses.

Never use raw AI output in a specification. Treat every AI draft as a starting point. Check every standards reference (AI confidently cites withdrawn standards), verify product availability in your market, and ensure performance values are realistic for your application. A specification with an invented BS number is worse than no specification at all.

Use AI for the structure, not the judgment. AI excels at organizing a specification section into the right format with the right headings. It's poor at making judgment calls about which products suit your project or which performance values are achievable. That's your expertise.

Iterate in stages. Don't try to generate a complete specification section in one prompt. Generate the structure first, then flesh out each part separately. A 3-prompt process (outline, then products, then execution) beats a single mega-prompt every time.

If you're looking for architecture roles where specification writing is central -- technical architect, specification writer, or project architect positions -- you can browse current openings on ArchGee's job board. Specification expertise is consistently one of the most sought-after skills in mid-career roles.

Prompt Customization Table

Use this table to adapt any prompt above to your specific context.