So I know there are strict rules in California for DIY contracts, but are there any rules that apply to pre-construction contracts with homeowners? What I mean is when an owner comes to us and we want them to be returned to us as a quote for work, and we offer services to architectural and engineering offices for project drawings or details for the owner to obtain building permits, construction services when needed, engineering and value budgeting. Are we required to meet the requirements of the DIY contract for such services or are there other rules that we must follow when the client is a homeowner? Many DIY contracts use a reversal that can give rise to big misunderstandings – the “allocation”. Used sparingly, it can be a good way to start a project, even if a definitive selection of products has not been defined (for example.B. Ceramic appliances or tiles). I found AdCs containing 2/3 of the contract value in items labeled as certificates, which are then reviewed as soon as the actual costs have been determined. The effect of this practice is that an agreement on the “fixed sum” is subject to huge increases (adjustments almost never go the other way)! Hello, Jonathan. Most apartment complexes have common areas and DIY contracts do not apply to public spaces. Construction contracts also apply regardless of the number of units contained in a building. Business and Professions Code, section 7151.2, defines a “DIY contract” as “an oral or written agreement or agreement contained in one or more documents between a contractor and an owner or between a contractor and a tenant, regardless of the number of housing or dwelling units contained in the building where the tenant resides when the work is performed in: on or on the tenant`s dwelling or dwelling unit for the performance of a DIY within the meaning of section 7151 and includes all work, services and materials to be provided and performed in connection with that house. “One question I get quite often when I unravel or check construction contracts is what provisions are necessary, if any, in construction contracts in California.