Ask Donnie vs 1build / Handoff: An Honest Comparison for Contractors
Ask Donnie and 1build/Handoff both turn a project into a priced estimate quickly, but they are built for different jobs. Handoff is the AI estimating app for small residential contractors, powered by 1build's live cost data, and it shines at fast, client-facing proposals with payment built in. Ask Donnie is a code-and-construction-management platform: it answers jurisdiction-specific building-code questions with verbatim citations, builds estimates from a deterministic math engine, reads plans, and runs a full commercial CM suite — all on a free-to-start wallet.
Short version: pick Handoff if you're a solo remodeler, handyman, or trade doing kitchen-and-bath and residential work and you want a mobile-first back office — proposals, financing, and payment collection — on top of a proprietary ZIP/county cost dataset. Pick Ask Donnie if you need cited building-code answers scoped to your jurisdiction, reproducible estimate math with an AACE accuracy range, and project-management depth from RFIs through closeout for commercial or GC work — or you simply want to start free and pay only for what you use.
One clarification, because the branding is genuinely confusing: "1build" is the construction cost-data company (it sells a live-cost-data API and a human estimating service), and Handoff is the AI estimating app built on that data and is now the primary consumer brand. When people say "1build," they usually mean the Handoff app.
What each tool is built for
Handoff is purpose-built for US residential contractors — remodelers, home builders, handymen, and trades like electricians, plumbers, painters, and roofers, plus fix-and-flip investors and small GCs. Its wedge is AI estimating that expands outward into proposals, project coordination, and admin. It's mobile-first, with localized supplier-linked cost data and client-facing proposals, financing, and payments. For a small shop that wants to skip hiring office staff, that's a focused, credible fit.
Ask Donnie is built for contractors and builders who need more than an estimate: cited building-code research scoped to where they actually build, deterministic itemized estimates, blueprint and plan reads, and a full construction-management suite. It serves the solo contractor and the commercial GC/CM workflow that Handoff explicitly doesn't target, and it's available free to start with native iOS and Android apps.
Neither is a clone of the other. Handoff is an estimating-and-back-office app for residential trades; Ask Donnie is a code-aware estimating and construction-management platform. The right answer depends on whether your work is residential-light-commercial back office or code-heavy and project-management-heavy.
Building-code answers: cited and jurisdiction-aware vs. not a code tool
This is the clearest difference. Ask Donnie answers building-code questions scoped to your state's adopted code edition — Texas on the 2012 IRC, California on the 2021, and so on — and quotes the exact section verbatim with a link to the public-domain source, alongside a reminder to verify local amendments with your AHJ. Handoff does not do code research; its AI is confined to estimating, and by users' own accounts it doesn't account for local codes.
Be clear about the boundaries on both sides. Ask Donnie's corpus is the model code mapped to each state's adopted edition, with the source section cited and an explicit "verify amendments with your AHJ" badge — it is not a substitute for a code official, and full local amendment text isn't part of the answer. If dedicated, amendment-rich code research is what you need, a specialist platform like UpCodes covers that ground too. But within an estimating workflow, having the actual rule cited next to the number is something Handoff doesn't attempt.
Estimates: deterministic math vs. AI-generated from local cost data
Both produce estimates fast, but the engines differ. Handoff generates estimates from a proprietary, daily-refreshed local cost dataset tied to ZIP and county, drawn from actual supplier catalogs (Home Depot, Lowe's, local lumber yards). That granular, hyper-local sourcing is a genuine strength for residential remodels. The trade-off reviewers report is that accuracy is input-dependent — it's only as good as your scope description, and numbers can swing high or low on complex jobs, so output needs human review.
Ask Donnie takes a deterministic approach: the same inputs produce the same itemized line items and the same total, the estimate shows its work material-and-labor line by line, and it carries an AACE accuracy class and range plus a basis of estimate. The number isn't generated token-by-token by a language model — it comes from a math engine, so it's reproducible and auditable.
Honest caveat: neither tool removes the estimator. Ask Donnie's own product tells you to verify pricing before quoting a client, and Handoff's accuracy depends on your inputs. The difference is approach — Handoff leans on its local supplier-catalog data, Ask Donnie leans on reproducible, transparent math — not a claim that one is universally more accurate than the other.
Construction management: a full suite vs. a maturing back office
If your work goes past the bid, this is where the gap is widest. Ask Donnie ships a full construction-management suite: AI-drafted RFIs, submittal compliance checks, change orders priced by the deterministic engine, daily logs, punch lists, a real CPM schedule with critical-path and float, earned-value cost control (CPI/SPI/EAC), and closeout with warranty and a certificate of completion. Throughout, the AI drafts and suggests but a human approves — it never stamps an approval or certifies completion.
Handoff is expanding from estimating into proposals, change orders, and project coordination, but reviewers note its project management and takeoff are still maturing, and it's explicitly residential-focused — not built for large commercial CSI-division GC/CM workflows. Its takeoff is also gated to the higher Scale tier and capped around 5,000 sqft residential.
For a remodeler who just needs to send a proposal and collect payment, Handoff's back office is plenty. For a GC running RFIs, submittals, schedule, and cost control across a job, Ask Donnie covers the lifecycle Handoff doesn't aim at.
Pricing: a free wallet vs. a free trial with annual plans
Both companies are more transparent than the construction-software norm, which is worth crediting — Handoff offers self-serve pricing and a free trial, unusual in a demo-gated industry.
The models differ. Ask Donnie is freemium and pay-per-use: a free $5 wallet with no credit card, then you pay only for what you use, with Pro at $150/mo ($200/mo of wallet credit) and Business at $250/mo ($400/mo of wallet credit) — no per-seat fees and no annual lock-in required. Handoff runs a free trial into subscription tiers where the full feature set sits higher up: AI Takeoffs appear on the $899/mo Scale tier, Pro and Scale require 12-month commitments, and the entry Flex plan meters AI to a credit cap each month.
If you want to try a real estimate without a card or a contract, Ask Donnie's free wallet is the lower-friction start. If you're ready to commit to a residential estimating subscription, Handoff's plans are clearly published.
Where 1build / Handoff is the better pick
A fair comparison names where the other tool wins. Choose Handoff or 1build if: you're a small residential remodeler or trade who wants a mobile-first back office with proposals, financing, and payment collection built in; you value its proprietary, daily-refreshed ZIP/county supplier-catalog cost data for local residential pricing; you want a free trial and published self-serve plans; or you specifically need something Ask Donnie doesn't offer — the 1build live-cost-data API for embedding prices into your own software, or the 1build human Estimating Service that builds bids for you with people in the loop.
Ask Donnie doesn't sell a cost-data API or a done-for-you human estimating service, and it doesn't try to be a residential payment-collection back office. If those are your core need, 1build/Handoff is the more direct answer.
Bottom line
| | Ask Donnie | 1build / Handoff | |---|---|---| | Primary job | Cited code answers + deterministic estimates + full CM | Fast residential estimates + back office (proposals, payments) | | Building-code research | Jurisdiction-aware, verbatim IRC citation, AHJ-verify | Not a code tool | | Estimate engine | Deterministic math, AACE accuracy range, basis of estimate | AI-generated from proprietary ZIP/county cost data | | Cost data | Real regional pricing, real-by-default | Daily-refreshed supplier-catalog prices by ZIP/county | | Plan reads | Reads plans + AI visual redline | Multimodal input; takeoff gated to Scale tier, ~5,000 sqft cap | | Construction management | RFIs, submittals, COs, daily logs, punch, CPM, EVM, closeout | Residential proposals/COs; PM still maturing | | Best fit | Code-heavy + commercial GC/CM; any contractor wanting cited code | Small residential remodelers and trades | | Pricing | Free $5 wallet, pay-per-use; Pro $150/mo, Business $250/mo | Free trial + plans; AI Takeoffs on $899/mo Scale; 12-mo commitments | | Cost-data API | No | Yes (1build API) | | Human estimating service | No | Yes (1build Estimating Service) | | Native apps | iOS + Android | Web + iOS + Android (mobile-first) |
Same goal, different center of gravity: Handoff optimizes the residential estimating-and-payment back office; Ask Donnie pairs cited code and reproducible estimate math with a full construction-management suite, free to start.
Frequently asked
Is Ask Donnie a 1build or Handoff alternative?
Yes, but with a wider scope. Both create AI estimates for contractors, so Ask Donnie can replace Handoff for estimating. Beyond that, Ask Donnie also answers jurisdiction-specific building-code questions with verbatim citations and runs a full construction-management suite (RFIs, submittals, change orders, CPM scheduling, cost control, closeout), which Handoff doesn't target. 1build/Handoff is focused on residential estimating and back-office tools like proposals and payments.
Does Handoff answer building-code questions?
No. Handoff is an AI estimating and back-office app for residential contractors; its AI is confined to estimating and, per users, doesn't account for local building codes. Ask Donnie is built around code: it scopes answers to your state's adopted code edition, quotes the exact section verbatim with a source link, and flags that you should verify local amendments with your AHJ.
Which gives more accurate estimates, Ask Donnie or Handoff?
They take different approaches and both require human review before you quote a client. Handoff generates estimates from a proprietary, daily-refreshed ZIP/county dataset built on real supplier catalogs, with accuracy that reviewers say depends on your scope description. Ask Donnie uses a deterministic math engine, so the same inputs reproduce the same itemized line items and total, and each estimate carries an AACE accuracy range and a basis of estimate you can audit.
Does Ask Donnie have a free plan, and how does pricing compare to Handoff?
Ask Donnie starts free with a $5 wallet and no credit card, then you pay only for what you use; Pro is $150/mo and Business is $250/mo, with no per-seat fees or required annual lock-in. Handoff offers a free trial and published self-serve plans, but its AI Takeoffs sit on the $899/mo Scale tier and Pro/Scale plans require 12-month commitments.
Which is better for residential vs. commercial work?
Handoff is purpose-built for small residential contractors — remodelers, handymen, and trades doing kitchen, bath, and renovation work who want fast proposals and built-in payments. Ask Donnie fits residential too but also covers the commercial and general-contractor lifecycle Handoff doesn't target, with cited code research, deterministic estimates, plan reads, and a full CM suite from RFIs through closeout.
See it on your own job
Ask Donnie is free to start — a $5 wallet, no card. Cited code answers and a deterministic estimate from your plans in minutes.
Try Ask Donnie →Comparisons reflect publicly available information about each product at the time of writing and our honest read of where each fits. Verify current features and pricing with each vendor.